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Super precision angular contact ball bearing, 110 x 170 x 28 mm, 15° contact angle, medium preload, phenolic outer-land-riding cage, ISO P4S tolerance.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 2MM9122WICR-SUM |
| Model | 2MM 9122 WI CR DUM 7022 C |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 110 mm |
| OD | 170 mm |
| Width | 28 mm |
| Material | Bearing Steel |
|---|---|
| Series | 9100 WI |
| Condition | New |
| Preload | Medium |
| Base Number | 7022 |
| Industry Terms | Spindle bearing, machine tool bearing, super precision angular contact, ABEC 7/9, universally ground |
| Total Width | 28 mm (single) |
| Bore Shaft Size | 110 mm |
| Mpn Variants | 2MM9122WICR-SUM, 2MM9122WICRSUM, 2MM 9122 WI CR SUM, 2MM9122WICRDUM, 2MM9122-WI-DUH, 7022C-T-P4S-SUM, 7022-C |
| Arrangement Configuration | Single bearing, universally ground |
| Precision Class | P4S |
| Dynamic Load Rating C1 | 109 400 N (24 600 lbf) - Timken C1, 1M revs, single bearing |
| Additional Attributes | Max shaft fillet radius 2 mm; shaft backing shoulder diameter 122.3 mm; housing backing shoulder diameter 158.4 mm; outer ring to-clear radius 2 mm; Timken manufacturing part number 2MM9122WI SUM; Timken world part number 7022C-T-P4S-SUM |
| Min Temp | -30 °C |
| Cage Type | CR - Phenolic Outer Land Riding Cage |
| Dynamic Load Rating | 109 400 N (24 600 lbf) - Timken C1, 1M revs, single bearing |
| Static Load Rating | 102 700 N (23 100 lbf) - C0 |
| Precision Rating | ISO P4S (ABEC 7/9) |
| Rolling Elements | Steel balls |
| Max Temp | 120 °C |
| Item Weight | 4.50 lbs |
| Cage Material | Phenolic (Timken MBR) |
| Limiting Speed | 7 500 rpm grease / 15 000 rpm oil |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Not specified |
| Internal Clearance | N/A - preloaded |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Universally matchable |
| Part Number | 2MM9122WICR-SUM |
| Cross Reference 1 | FAG B7022-C-T-P4S-UM |
|---|---|
| Cross Reference 2 | NSK 7022CTRSUMP4 |
| Cross Reference 3 | RHP 7022CTSUMP4 |
| Cross Reference 4 | SKF 7022 CD/P4A |
| Cross Reference 5 | Timken world part number 7022C-T-P4S-SUM |
| Cross Reference 6 | Fafnir 3MM9122WI (related size, 25 degree contact angle) |
Fafnir 2MM9122WICR-SUM super-precision angular contact ball bearing from Timken. Series: Fafnir 9100WI. ISO equivalent section: 7022. Bore: 110 mm. Outside Diameter: 170 mm. Bearing Width: 28 mm. Total Width: 28 mm. Rows per Set: single. Timken Manufacturing Part Number: 2MM9122WI SUM. Timken World Part Number: 7022C-T-P4S-SUM.
Contact Angle: 15°. Precision Rating: ISO P4S (ABEC 7/9). Preload: medium. Cage Type: CR — Phenolic Outer Land Riding Cage. Cage Material: phenolic. Ball Type: steel. Closure Type: open. Bore form: straight. Searchable forms include 2MM9122WICR-SUM, 2MM9122WICRSUM, 2MM 9122 WI CR SUM, 7022C-T-P4S-SUM and 7022-C.
Dynamic Radial Load Rating, 1M revolutions (C1): 109 400 N (24 600 lbf), single bearing. Dynamic Radial Load Rating, ISO C1 per row: 99 300 N (22 300 lbf). Static Radial Load Rating (C0): 102 700 N (23 100 lbf). Limiting Speed, grease: 7 500 rpm. Limiting Speed, oil: 15 000 rpm.
A 15° contact angle favours speed and radial rigidity over pure thrust capacity, the usual choice for grinding and milling spindles. Medium preload gives more axial stiffness than light while generating less heat than heavy. Universal grinding lets two or three of these stack back to back, face to face or in tandem and reach the published preload without shims. The phenolic outer land riding cage is light, runs cool and suits oil-mist and air-oil lubrication.
Max Shaft Fillet Radius: 2 mm. Shaft Backing Shoulder Diameter: 122.3 mm. Housing Backing Shoulder Diameter: 158.4 mm. Outer Ring To-Clear Radius: 2 mm.
Unit Quantity: 1 Pc. One bearing, single row of balls, universally ground for stacking into duplex or triplex sets.
Same-specification equivalents: FAG B7022-C-T-P4S-UM, NSK 7022CTRSUMP4, RHP 7022CTSUMP4, SKF 7022 CD/P4A. A 7022 in a different contact angle, preload grade or set code is a related size.
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