Miniature Bearings Australia

6903-C3-T9H-ACO - Datasheet

MBA

Category Information

Bearings - Single Row Ball - Unflanged - Precision - High Speed Cage

High Speed Cage Precision Unflanged Single Row Ball Bearings. This product group includes bearings with cages for high speed applications, including phenolic, nylon and polyamide.

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.
Bearings in this group have various types of high speed cages.
Speed ratings range from 20 percent to 80 percent increase on standard cage types.
See individual datasheets, available on request.
Items with high speed cages usually have the suffixes T9H, TNH, TW or KC
This category does not include ceramic hybrid bearings with high speed cages. These are listed under Bearings - Ceramic Hybrid

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 - High Speed Polyamide Cage

Lubrication Type Oil
Lubrication Name ACO Anti Corrosion Oil Film
Basic Part 6903
Limiting Speed 44800
Cage Type Polyamide
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 C3 (11 to 25)
Precision Grade Abec 1
Closure Type Open
Max Temperature 120 Deg. C

Country of Origin: JP

Product Compliance and Data

Additional Resources

Applications & Uses

RC Nitro Engine Parts
ASP - 61 - Rear Bearing 17-30-7mm
ASP - 61 All Models - Bearing 17-30-7mm
ASP - 75 - Rear Bearing 17-30-7mm
ASP - 75 All Models - Bearing 17-30-7mm
Chapman - DC - 28 - Bearing 17-30-7mm
Enya - 60X 2Cand3 - Rear Bearing 17-30-7mm
Enya - X 2Cand3 - 240 - Bearing 17-30-7mm
Fitzpatrick - 61 - Rear Bearing 17-30-7mm
Fitzpatrick - 61 With Side Exhaust and ABC Engine - Bearing 17-30-7mm
Fox - 36 All Models - Bearing 17-30-7mm
Fox - 60 -74 Eagle IV - Rear Bearing 17-30-7mm
Fox - Eagle IV - 46 - Bearing 17-30-7mm
HP - 61 Gold Cup - Rear Bearing 17-30-7mm
HP - Gold Cup F - 21 - Bearing 17-30-7mm
Irvine - 15 All Models - Bearing 17-30-7mm
Irvine - 40 All Models - Bearing 17-30-7mm
Irvine - 46 Red - 2 Stroke - Rear Bearing 17-30-7mm
Irvine - 53 - 2 Stroke - Rear Bearing 17-30-7mm
Irvine - 53 ABC - 12 - Bearing 17-30-7mm
Irvine - 53 ABC - 150 - Bearing 17-30-7mm
Irvine - 53 All Models - Bearing 17-30-7mm
Irvine - 61 - 2 Stroke - Rear Bearing 17-30-7mm
Irvine - MK3 - 72 - Bearing 17-30-7mm
Irvine - Old - 15 - Bearing 17-30-7mm
Irvine - Old - 53 - Bearing 17-30-7mm
Jett - Fan Jet - 25 - Bearing 17-30-7mm
Jett - Fire - 40 - Bearing 17-30-7mm
Jett - Fire - 50 - Bearing 17-30-7mm
Jett - Fire - 95 - Bearing 17-30-7mm
Jett - Heli - 90 - Bearing 17-30-7mm
Jett - Sport - 105 - Bearing 17-30-7mm
Jett - Sport - 12 - Bearing 17-30-7mm
Jett - Sport - 40 - Bearing 17-30-7mm
K.B - 40 All Models - Bearing 17-30-7mm
K.B - 7.5 -11 Outboard - Rear Bearing 17-30-7mm
K.B - 72 -82 and 91 Violet - Rear Bearing 17-30-7mm
K.B - 8702 - 21 - Bearing 17-30-7mm
K.B - DF - 82 - Bearing 17-30-7mm
K.B - OB New - 7.5 - Bearing 17-30-7mm
K.B - Outboard Late Model Marine - 3.5 - Bearing 17-30-7mm
K.B - Outboard Marine - 40 - Bearing 17-30-7mm
K.B - Outboard Marine Late Model - 90 - Bearing 17-30-7mm
K.B - Pro - 67 - Bearing 17-30-7mm
K.B - SS Marine - 7.5 .45CC - Bearing 17-30-7mm
K.B - Violet - 3.5 - Bearing 17-30-7mm
K.B - Violet - 7.5 - Bearing 17-30-7mm
K.B - Violet - 72 - Bearing 17-30-7mm
K.B - Violet - 82 - 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
Magnum Power - XL - 53 - Bearing 17-30-7mm
MDS - 60 - Bearing 17-30-7mm
Moki - 61 1980 TO 1992 - Rear Bearing 17-30-7mm
Moki - All - 51 - Bearing 17-30-7mm
Moki - All - 61 - Bearing 17-30-7mm
Nelson - 45 - 12 - Bearing 17-30-7mm
Nelson - 45 All Models - Bearing 17-30-7mm
Nelson - 65 All Models - Bearing 17-30-7mm
Nelson - 91 - Rear Bearing 17-30-7mm
Nelson - Quickie - 75 - Bearing 17-30-7mm
Nelson - Quickie - 91 - 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
OS - FSR ABC - 61 - Bearing 17-30-7mm
OS - FSR Gold Head - 45 - Bearing 17-30-7mm
OS - FSR RC Special - 90 - Bearing 17-30-7mm
OS - FSR Ring ED - 108 - Bearing 17-30-7mm
OS - RF ABC RC - 40 - Bearing 17-30-7mm
OS - RF-H Pump - 21 - Bearing 17-30-7mm
OS - RF-H RC With 7H - 21 - Bearing 17-30-7mm
OS - RF-P - 61 - Bearing 17-30-7mm
OS - RF-P Ring Hanno Special - 61 - Bearing 17-30-7mm
OS - SF ABC RC W-Muffler - 61 - Bearing 17-30-7mm
OS - SF-HP RC - 46 - Bearing 17-30-7mm
OS - SF-P RC/Pump - 46 - Bearing 17-30-7mm
OS - VF-H ABC - 25 - Bearing 17-30-7mm
OS - VF-H RC With 7H - 25 - Bearing 17-30-7mm
Picco - 40 All Models - Bearing 17-30-7mm
Picco - 61 - 2 Stroke - Rear Bearing 17-30-7mm
Rossi - 3 and 2 - 3.5 - Bearing 17-30-7mm
Rossi - 40 -45 Air - Rear Bearing 17-30-7mm
Rossi - 45 All Models - Bearing 17-30-7mm
Rossi - 53 Glow Engine - 60 - Bearing 17-30-7mm
Rossi - 60 3and2 - Rear Bearing 17-30-7mm
Rossi - 60 FI RC - 61 - Rear Bearing 17-30-7mm
Rossi - 60 RE - 61 ABC RE - Rear Bearing 17-30-7mm
Rossi - ABC RE - 60 - Bearing 17-30-7mm
Rossi - Air - 53 - Bearing 17-30-7mm
Rossi - F1 RC - 21 C - Bearing 17-30-7mm
Rossi - F1 RC - 81 - Bearing 17-30-7mm
Rossi - R40T - 21 - Bearing 17-30-7mm
Rossi - RE - 90 - Bearing 17-30-7mm
Saito - 120 Old - Rear Bearing 17-30-7mm
Saito - 270 - FA270T - FA300T - Bearing - Centre
Saito - 4C New - 45 - Bearing 17-30-7mm
Saito - 82 All Models - Bearing 17-30-7mm
Saito - FA 100 - Bearing 17-30-7mm
Saito - FA 150 - Bearing 17-30-7mm
Saito - FA 80 - Bearing 17-30-7mm
Saito - FA182TD - 100 - Rear Bearing 17-30-7mm
Saito - Old - 30 - Bearing 17-30-7mm
Tower - 61 BB ABC - 46 - Bearing 17-30-7mm
Tower - 75 BB ABC - 15 - Bearing 17-30-7mm
Webra - 28 All Models - Bearing 17-30-7mm
Webra - 60 -61 Heli - Rear Bearing 17-30-7mm
Webra - Heli - 32 - Bearing 17-30-7mm
Webra - Heli - 80 - Bearing 17-30-7mm
Webra - Speed 61/P5 - 40 - Bearing 17-30-7mm
Webra - Speed P5 - 35 - Bearing 17-30-7mm
Webra - Speed P5 - 40 - Bearing 17-30-7mm
YS - 2-C - 24.7 - Bearing 17-30-7mm
YS - 4-C - 140 - Bearing 17-30-7mm
YS - 60 -61 2C and 4C - Rear Bearing 17-30-7mm
YS - 91 All Models - Bearing 17-30-7mm

Cross References

BOSCH 3600905019
WIB 61903-T9H
ISO 6903TWC3P13
ISO 6903-TW-C3-P13
ADR AY17-T9H
ADR AY17TW-C3-P13
61903T9H
AY17T9H
AY17TWC3P13
6903T9HC3ACO
6903 Basic Size Ref

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