Ball Bearings vs. Roller Bearings: Which One Does Your Application Actually Need?
Both ball bearings and roller bearings serve the same fundamental purpose: reducing friction, supporting loads,

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The Fafnir 2MM9122WICR-SUM Bearing is a high-quality angular contact ball bearing designed for industrial automation and motion control systems. Made of durable steel material, this bearing has a bore diameter of 110mm, outside diameter of 170mm, and width of 28mm. Produced in the United States by FAFNIR, this bearing is reliable and efficient for various mechanical power transmission applications. With the specific model number of 2MM 9122 WI CR DUM 7022 C, this bearing is a critical component for ensuring smooth and precise motion in machinery and equipment.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 2MM9122WICRDUM |
| Model | 2MM 9122 WI CR DUM 7022 C |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 110 mm |
| OD | 170 mm |
| Width | 28 mm |
| Advertise | 1 |
|---|---|
| Material | Bearing Steel |
| Min Temp | -30 °C |
| Cage Type | CR - Phenolic Outer Land Riding Cage |
| Dynamic Load Rating | 109.4 kN / 24600 lbf |
| Static Load Rating | 102.7 kN / 23100 lbf |
| Precision Rating | ABEC 7 / P4 |
| Series | 9100 WI |
| Rolling Elements | Ball |
| Max Temp | 120 °C |
| Condition | New |
| Item Weight | 4.50 lbs |
| Cage Material | Phenolic |
| Limiting Speed | 7500 rpm |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Preload | Medium |
| Mounting Arrangement | Universal |
| Cross Reference 1 | FAG B7022-C-T-P4S-UM |
|---|---|
| Cross Reference 2 | SKF 7022 CDGB/P4A |
| Cross Reference 3 | NSK 7022CTYSULP4 |
| Cross Reference 4 | RHP 7022CTSUMP4 |
| Cross Reference 5 | GMN S6022 C TA P4 D UM |
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