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Super-precision single-row angular contact ball bearing, 110 mm bore x 170 mm OD x 28 mm wide, 15° contact angle, medium preload, phenolic outer-land-riding cage, ABEC 7/9. Sold as 1 Pc.
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$486.72
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 2MM9122WICRSUM |
| Model | 2MM 9122 WI CR SUM 7022C |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 110 mm |
| OD | 170 mm |
| Width | 28 mm |
| Material | Bearing Steel |
|---|---|
| Series | 9100 WI |
| Condition | New – Open box |
| Preload | Medium |
| Base Number | 2MM9122WI |
| Industry Terms | super precision spindle bearing, machine tool bearing, phenolic cage bearing, ABEC 9 bearing |
| Common Misspellings | 2MM9122WICRSUM, 2MM 9122 WI CR SUM, Fafner, Faffnir, 2MM9122W1-SUM |
| Application Types | Machine tool spindles, grinding spindles, precision gearboxes, rotary tables |
| Condition Note | Made In USA, New Old Stock ABEC7, 7022 C T R SUL P4, 122 |
| Bore Shaft Size | 110 mm (4.331 in) |
| Mpn Variants | 2MM9122WICR-SUM, 2MM9122WI-CR-SUM, 2MM-9122-WI-CR-SUM, 2MM9122WISUM, 2MM 9122 WI CR SUM, 2MM9122WI-CR-SUL, 7022-C, 7022CTRSULP4 |
| Arrangement Configuration | SU — single universally ground, stackable DB / DF / DT |
| Precision Class | P4S — ABEC 7 dimensional / ABEC 9 running accuracy |
| 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 |
| Rolling Elements | Ball |
| Max Temp | 120 °C |
| 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° |
| Mounting Arrangement | Universal |
| Design Units | Metric |
| Part Number | 2MM9122WI-CR-SUM |
| Cross Reference 1 | RHP 7022CTSUMP4 |
|---|---|
| Cross Reference 2 | FAG B7022C.T.P4S.UM |
| Cross Reference 3 | SKF 7022 CD/P4A |
| Cross Reference 4 | NSK 7022CTRSUMP4 |
| Cross Reference 5 | GMN S6022 C TA P4 D UM |
A Fafnir 2MM9122WI-CR-SUM super-precision single-row angular contact ball bearing. Bore 110 mm, outside diameter 170 mm, width 28 mm. Open on both faces, universally ground.
2MM — 15° contact angle in the Fafnir scheme; the MM prefix carries the P4S build9122 — leading 9 marks the ISO 70 light series, 110 mm bore, so the ISO equivalent is 7022-CWI — super-precision spindle bearing seriesCR — phenolic outer-land-riding cageSU — single universally groundM — medium preload
Medium preload gives more stiffness than the light grade and less heat than the heavy grade, which is the usual choice for general spindle rebuilds. The outer-land-riding phenolic cage is guided on the outer ring, keeping cage motion stable at high speed. Universal grinding lets two rings of this designation stack to the stated preload without shims.
Bore: 110 mmOutside diameter: 170 mmWidth: 28 mmContact angle: 15°Precision: P4S — ABEC 7 / ABEC 9Preload: mediumCage: phenolic, outer-land ridingRows: 1Closure: open
Single universally ground bearing. 1 Pc per sale unit.
Thrust is carried in one direction only, so the bearing runs against an opposing bearing or a housing shoulder. The wide outer-ring land is the thrust face and its orientation sets the arrangement.
Same-spec equivalents at 15°, super precision, medium preload: RHP 7022CTSUMP4, FAG B7022C.T.P4S.UM, SKF 7022 CD/P4A, NSK 7022CTRSUMP4. The 25° 3MM9122WI and RHP 7022ETSUL share the envelope at a different contact angle and are related sizes rather than interchanges.
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