Miniature Bearings Australia
6903 - Datasheet
MBA
Category Information
Bearings - Single Row Ball - Unflanged - Precision - Chrome SteelChrome Steel Precision Unflanged Single Row Ball Bearings. Chrome steel radial ball bearings.
- Single row radial ball bearings are arguably the most common, widely used type of bearing. They consist of an inner ring, an outer ring, a set of balls, and a cage that retains the balls in a circular path.
- Single row radial ball bearings are commonly used in a wide range of applications, including electric motors, fans, pumps, gearboxes, agricultural equipment, appliances, and automotive components.
- They are versatile, cost-effective bearings that provide reliable support for radial loads and some axial loads in one direction. An expanded range may be available on special order. Please enquire.
- Standard single row radial ball bearings.
Product Data
- ID (d)
:
17.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.669 in.) - OD (D)
30.000
mm
+ 0.000 / - 0.010
(Equiv. 1.181 in.) - Width (B)
7.000
mm
+ 0.000 / - 0.125
(Equiv. 0.276 in.) - Precision Grade Abec 1
- Closure Type Open
- Bearing Type Radial
- Material Chrome Steel SAE 52100
- Lubrication Type Grease
- Lubrication Name Standard Unspecified
- Basic Part 6903
- Limiting Speed 23000
- Cage Type Standard
- Static Load Rating KGf 262
- Dynamic Load Rating KGf 468
- Radii 0.30 mm
- Inner Shoulder (UI) 21.00mm
- Outer Shoulder (UO) 26.80 mm
- Number of Balls 11
- Clearance CN (3 to 18)
- Precision Grade Abec 1
- Closure Type Open
- Max Temperature 120 Deg. C
Product Compliance and Data
Additional Resources
- Catalogue: Ceramic Bearings Catalogue
- Catalogue: Plastic Bearings Catalogue
- Catalogue: Standard Bearings Catalogue
- General: Bearing Cleanliness
- General: Bearing Clearances
- General: Bearing Flanges & Snap Rings
- General: Bearing Retainers (Cages)
- General: General Loads Information
- General: Lubrication
- General: Prefix & Suffix Guide
- General: Static vs Dynamic Loads
- Materials: 316 Stainless
- Materials: CASSTOP Anti-Corrosion Bearing Material
- Materials: Ceramic vs Ceramic Hybrid
- Materials: Ceramic Bearings in Vibratory Applications
- Materials: Ceramic Hybrid Bearings in Vibratory Applications
- Materials: General Bearing Materials
- Materials: Magnetism & Bearings
- Precision: 316 Stainless & Plastic Bearing Tolerances
- Precision: ABEC Basic Information
- Precision: Precision Bearing Tolerances
- Problem Solving: Bearing Failure
- Problem Solving: Fatigue (L10 Life)
- Problem Solving: Noise
Applications & Uses
- RC Nitro Engine Parts
- ASP - 61 - Rear Bearing 17-30-7mm
- ASP - 75 - Rear Bearing 17-30-7mm
- Enya - 60X 2Cand3 - Rear Bearing 17-30-7mm
- Irvine - 46 Red - 2 Stroke - Rear Bearing 17-30-7mm
- Irvine - 53 - 2 Stroke - Rear Bearing 17-30-7mm
- Irvine - 61 - 2 Stroke - Rear Bearing 17-30-7mm
- Magnum - 61XL - 2 Stroke - Rear Bearing 17-30-7mm
- Magnum - 75XL - 2 Stroke - Rear Bearing 17-30-7mm
- Magnum - 80XL - 2 Stroke - Rear Bearing 17-30-7mm
- OS - 61 FR ABC Special - Rear Bearing 17-30-7mm
- OS - 61 FR Gold Head - Rear Bearing 17-30-7mm
- OS - 61 FR RC Special - Rear Bearing 17-30-7mm
- OS - 61 RF ABC-P RC-Pump - Rear Bearing 17-30-7mm
- OS - 61 RF-H RC - Rear Bearing 17-30-7mm
- OS - 61 RF-H RC W-7H - Rear Bearing 17-30-7mm
- OS - 61 RF-H-P RC W-Pump - Rear Bearing 17-30-7mm
- OS - 61 SF ABC RC W-Muffler - Rear Bearing 17-30-7mm
- OS - 61 SF ABC RC-Pump - Rear Bearing 17-30-7mm
- OS - 61 SF RC W-Muffler - Rear Bearing 17-30-7mm
- OS - 61 SF-H ABC RC - Rear Bearing 17-30-7mm
- OS - 61 SF-H ABC-P W-PMP - Rear Bearing 17-30-7mm
- OS - 61 SF-H RC - Rear Bearing 17-30-7mm
- OS - 61 SF-H RC W-7H - Rear Bearing 17-30-7mm
- OS - 61 SF-H RC W-Pump - Rear Bearing 17-30-7mm
- OS - 61 SF-P RC-Pump - Rear Bearing 17-30-7mm
- OS - 61 VF-H ABC RC W-7H - Rear Bearing 17-30-7mm
- OS - 61 VF-H RC W-7H Car - Rear Bearing 17-30-7mm
Cross References
- 5972K244
- WIB 61903
- FAFNIR 9303K
- ADR AY17
- FAFNIR M9303K
- 6903
- 6903 Basic Size Ref
