Collection: Bearings - Single Row Ball - Unflanged

Bearings -> Single Row Ball -> Unflanged
ID (d) O.D. (D) Width (B) Inner Ring Width (Bn) Flange Diameter (DF) Flange Width (BF) Indicative
Image
Single Row Ball Bearings - 6.35x12.7x4.762 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.007
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.007
(Equiv. 0.5 in.)
Width (B)
4.762
mm
+ 0.000 / - 0.120
(Equiv. 0.187 in.)
Single Row Ball Bearings - 6.35x12.7x4.762 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R188A-ZZ-MC3-JP6 (Pack of 100)
Contact Us | Special Order Only - Please contact us if you need a large quantity
ID (d) O.D. (D) Width (B) Inner Ring Width (Bn) Indicative
Image
Single Row Ball Bearings - 6.35x12.7x4.762 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.007
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.007
(Equiv. 0.5 in.)
Width (B)
4.762
mm
+ 0.000 / - 0.120
(Equiv. 0.187 in.)
Single Row Ball Bearings - 6.35x12.7x4.762 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R188A-ZZ-MC3-JP6 (Pack of 100)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Wed, Apr 11, 2029
Single Row Ball Bearings - 6.35x12.7x4.762 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.0075
(Equiv. 0.5 in.)
Width (B)
4.762
mm
+ 0.000 / - 0.125
(Equiv. 0.187 in.)
Single Row Ball Bearings - 6.35x12.7x4.762 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R188A-ZZ-MC3-EZO (Pack of 100)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Single Row Ball Bearings - 6.35x12.7x4.762 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.0075
(Equiv. 0.5 in.)
Width (B)
4.762
mm
+ 0.000 / - 0.125
(Equiv. 0.187 in.)
Single Row Ball Bearings - 6.35x12.7x4.762 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R188A-ZZ-MC3-EZO (Pack of 100)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Wed, Apr 11, 2029
Single Row Ball Bearings - 6.35x12.7x4.762 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
O.D. (D)
12.700
mm
Width (B)
4.762
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Deleted Item. Available while stocks last. Double blue rubber sealed economy bearing
Part Number: R188A-2RB-ECO (Pack of 10)
43 units (430 pcs) Available Now | Item Discontinued - Up to 43 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 10 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

43 units (430 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Single Row Ball Bearings - 6.35x12.7x4.762 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
O.D. (D)
12.700
mm
Width (B)
4.762
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Deleted Item. Available while stocks last. Double blue rubber sealed economy bearing
Part Number: R188A-2RB-ECO (Pack of 10)
43 units (430 pcs) Available Now | Item Discontinued - Up to 43 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 10 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

43 units (430 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.0075
(Equiv. 0.5 in.)
Width (B)
4.762
mm
+ 0.000 / - 0.125
(Equiv. 0.187 in.)
Inner Ring Width (Bn)
5.556
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SWR188A-ZZ-MC3 (Pack of 100)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Oct 15, 2026
Regular price $586.50 AUD
Regular price $1,240.56 AUD Sale price $586.50 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.0075
(Equiv. 0.5 in.)
Width (B)
4.762
mm
+ 0.000 / - 0.125
(Equiv. 0.187 in.)
Inner Ring Width (Bn)
5.556
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SWR188A-ZZ-MC3 (Pack of 100)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Oct 15, 2026
Regular price $586.50 AUD
Regular price $1,240.56 AUD Sale price $586.50 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.004
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.005
(Equiv. 0.5 in.)
Width (B)
4.762
mm
+ 0.000 / - 0.040
(Equiv. 0.187 in.)
Inner Ring Width (Bn)
5.556
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: P4   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SWR188A-ZZS-MC34-GR7-R-G48 (Pack of 40)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $3,223.68 AUD
Regular price Sale price $3,223.68 AUD
Priced, Stocked and Sold Per 40 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.004
(Equiv. 0.25 in.)
O.D. (D)
12.700
mm
+ 0.000 / - 0.005
(Equiv. 0.5 in.)
Width (B)
4.762
mm
+ 0.000 / - 0.040
(Equiv. 0.187 in.)
Inner Ring Width (Bn)
5.556
mm
Single Row Ball Bearings - 6.35x12.7x4.762 mm / 5.556 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: P4   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SWR188A-ZZS-MC34-GR7-R-G48 (Pack of 40)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $3,223.68 AUD
Regular price Sale price $3,223.68 AUD
Priced, Stocked and Sold Per 40 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.127 / - 0.000
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)    Precision Grade: Semi-Precision   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: S316-R4 (Pack of 10)
Out of Stock | Backorder Now | Backorder now for delivery around Fri, Sep 04, 2026
Regular price $837.77 AUD
Regular price Sale price $837.77 AUD
Priced, Stocked and Sold Per 10 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel 316 Similar to A4, 18-10 Bearing
ID (d)
6.350
mm
+ 0.076 / - 0.000
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.076
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.127 / - 0.000
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel 316 Similar to A4, 18-10
Material: Stainless Steel 316 (Similar to A4, 18-10)    Precision Grade: Semi-Precision   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: S316-R4 (Pack of 10)
Out of Stock | Backorder Now | Backorder now for delivery around Fri, Sep 04, 2026
Regular price $837.77 AUD
Regular price Sale price $837.77 AUD
Priced, Stocked and Sold Per 10 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.005
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 5   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-ZZS-MC34-GR5-R-G48 (Pack of 20)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $1,300.05 AUD
Regular price Sale price $1,300.05 AUD
Priced, Stocked and Sold Per 20 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.005
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 5   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-ZZS-MC34-GR5-R-G48 (Pack of 20)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $1,300.05 AUD
Regular price Sale price $1,300.05 AUD
Priced, Stocked and Sold Per 20 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.004
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 7   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-ZZS-MC34-GR7-R-G48 (Pack of 35)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $2,949.05 AUD
Regular price Sale price $2,949.05 AUD
Priced, Stocked and Sold Per 35 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.004
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 7   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-ZZS-MC34-GR7-R-G48 (Pack of 35)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $2,949.05 AUD
Regular price Sale price $2,949.05 AUD
Priced, Stocked and Sold Per 35 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.004
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Ribbon Retainer Low Torque
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 7   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-MC34-GR7-R-L23 (Pack of 40)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $2,719.32 AUD
Regular price Sale price $2,719.32 AUD
Priced, Stocked and Sold Per 40 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.004
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Ribbon Retainer Low Torque
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 7   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-MC34-GR7-R-L23 (Pack of 40)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $2,719.32 AUD
Regular price Sale price $2,719.32 AUD
Priced, Stocked and Sold Per 40 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.005
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Ribbon Retainer Low Torque
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 5   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-FF-MC34-GR5-R-G48 (Pack of 20)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $1,343.86 AUD
Regular price Sale price $1,343.86 AUD
Priced, Stocked and Sold Per 20 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.005
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Ribbon Retainer Low Torque
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 5   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-FF-MC34-GR5-R-G48 (Pack of 20)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $1,343.86 AUD
Regular price Sale price $1,343.86 AUD
Priced, Stocked and Sold Per 20 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.005
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Ribbon Retainer Low Torque
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 5   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-MC34-GR5-R-L23 (Pack of 20)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $1,197.86 AUD
Regular price Sale price $1,197.86 AUD
Priced, Stocked and Sold Per 20 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.005
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Ribbon Retainer Low Torque
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 5   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-MC34-GR5-R-L23 (Pack of 20)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $1,197.86 AUD
Regular price Sale price $1,197.86 AUD
Priced, Stocked and Sold Per 20 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.004
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Ribbon Retainer Low Torque
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 7   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-FF-MC34-GR7-R-G48 (Pack of 40)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $3,043.86 AUD
Regular price Sale price $3,043.86 AUD
Priced, Stocked and Sold Per 40 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C - Ribbon Retainer Low Torque Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.004
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.005
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.040
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Ribbon Retainer Low Torque
Material: Stainless Steel AISI 440C - Ribbon Retainer Low Torque    Precision Grade: Abec 7   
Category: Bearings - Single Row Ball - Unflanged - High Precision
Part Number: SR4-FF-MC34-GR7-R-G48 (Pack of 40)
Out of Stock | Backorder Now | Backorder now for delivery around Sat, Sep 12, 2026
Regular price $3,043.86 AUD
Regular price Sale price $3,043.86 AUD
Priced, Stocked and Sold Per 40 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SR4-MC3-AF12 (Pack of 50)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Aug 20, 2026
Regular price $296.68 AUD
Regular price $356.02 AUD Sale price $296.68 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SR4-MC3-AF12 (Pack of 50)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Aug 20, 2026
Regular price $296.68 AUD
Regular price $356.02 AUD Sale price $296.68 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 420C - Polyamide Cage Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 420C - Polyamide Cage Bearing
Material: Stainless Steel AISI 420C - Polyamide Cage    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SR4-T9H-ECO (Pack of 100)
Out of Stock | Backorder Now | Backorder now for delivery around Fri, Aug 14, 2026
Regular price $844.23 AUD
Regular price $1,013.07 AUD Sale price $844.23 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 420C - Polyamide Cage Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 420C - Polyamide Cage Bearing
Material: Stainless Steel AISI 420C - Polyamide Cage    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SR4-T9H-ECO (Pack of 100)
Out of Stock | Backorder Now | Backorder now for delivery around Fri, Aug 14, 2026
Regular price $844.23 AUD
Regular price $1,013.07 AUD Sale price $844.23 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SR4-TTS-MC3 (Pack of 100)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SR4-TTS-MC3 (Pack of 100)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Wed, Apr 11, 2029
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-MC5-ACO (Pack of 200)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-MC5-ACO (Pack of 200)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Wed, Apr 11, 2029
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-2RS-ECO (Pack of 2)
7 units (14 pcs) Available Now | Further orders can be expected around Fri, Aug 14, 2026
Regular price $3.59 AUD
Regular price Sale price $3.59 AUD
Priced, Stocked and Sold Per 2 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 7 available can be backordered.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-2RS-ECO (Pack of 2)
7 units (14 pcs) Available Now | Further orders can be expected around Fri, Aug 14, 2026
Regular price $3.59 AUD
Regular price Sale price $3.59 AUD
Priced, Stocked and Sold Per 2 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

7 units (14 pcs) Available Now. Backorder if more than 7.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls
Material: Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Double shielded ceramic-hybrid bearing with high speed polyamide retainer and light anti-rust lubricant
Part Number: R4-CSN-T9H-ACO-ECO (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Fri, Aug 28, 2026
Regular price $74.05 AUD
Regular price $87.25 AUD Sale price $74.05 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls
Material: Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Double shielded ceramic-hybrid bearing with high speed polyamide retainer and light anti-rust lubricant
Part Number: R4-CSN-T9H-ACO-ECO (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Fri, Aug 28, 2026
Regular price $74.05 AUD
Regular price $87.25 AUD Sale price $74.05 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Double shielded economy bearing
Part Number: R4-ZZ-ECO (Pack of 5)
1 pack (5 pcs) Available Now | Further orders can be expected around Fri, Aug 14, 2026
Regular price $7.14 AUD
Regular price Sale price $7.14 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Double shielded economy bearing
Part Number: R4-ZZ-ECO (Pack of 5)
1 pack (5 pcs) Available Now | Further orders can be expected around Fri, Aug 14, 2026
Regular price $7.14 AUD
Regular price Sale price $7.14 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

1 pack (5 pcs) Available Now. Backorder if more than 1.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-MC4-ACO (Pack of 200)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-MC4-ACO (Pack of 200)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Wed, Apr 11, 2029
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.007
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.007
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.120
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-ZZ-MC3-JP6 (Pack of 200)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.007
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.007
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.120
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-ZZ-MC3-JP6 (Pack of 200)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Wed, Apr 11, 2029
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing
Material: Chrome Steel SAE 52100 - High Speed Polyamide Cage    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-T9H-ECO (Pack of 100)
Out of Stock | Backorder Now | Backorder now for delivery around Fri, Aug 14, 2026
Regular price $690.14 AUD
Regular price $828.16 AUD Sale price $690.14 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing
ID (d)
6.350
mm
O.D. (D)
15.875
mm
Width (B)
4.978
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing
Material: Chrome Steel SAE 52100 - High Speed Polyamide Cage    Precision Grade: Economy   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: R4-T9H-ECO (Pack of 100)
Out of Stock | Backorder Now | Backorder now for delivery around Fri, Aug 14, 2026
Regular price $690.14 AUD
Regular price $828.16 AUD Sale price $690.14 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Open Standard Bearing
Part Number: R4-MC3-ACO (Pack of 100)
Contact Us | Special Order Only - Please contact us if you need a large quantity
Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Open Standard Bearing
Part Number: R4-MC3-ACO (Pack of 100)
Contact Us | Special Order Only - Please contact us if you need a large quantity | Backorder now for delivery around Wed, Apr 11, 2029
Single Row Ball Bearings - 6.35x15.875x4.978 mm / 5.771 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Inner Ring Width (Bn)
5.771
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm / 5.771 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SWR4-ZZ-MC3 (Pack of 100)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Aug 20, 2026
Regular price $645.59 AUD
Regular price $1,365.48 AUD Sale price $645.59 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Single Row Ball Bearings - 6.35x15.875x4.978 mm / 5.771 mm Unflanged - Stainless Steel AISI 440C Bearing
ID (d)
6.350
mm
+ 0.000 / - 0.0075
(Equiv. 0.25 in.)
O.D. (D)
15.875
mm
+ 0.000 / - 0.0075
(Equiv. 0.625 in.)
Width (B)
4.978
mm
+ 0.000 / - 0.125
(Equiv. 0.196 in.)
Inner Ring Width (Bn)
5.771
mm
Single Row Ball Bearings - 6.35x15.875x4.978 mm / 5.771 mm - Stainless Steel AISI 440C
Material: Stainless Steel AISI 440C    Precision Grade: Abec 1   
Category: Bearings - Single Row Ball - Unflanged - Precision
Part Number: SWR4-ZZ-MC3 (Pack of 100)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Aug 20, 2026
Regular price $645.59 AUD
Regular price $1,365.48 AUD Sale price $645.59 AUD
Priced, Stocked and Sold Per 100 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.