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Timing Belt Pulleys and V-Belt Sheaves: Matching Belt Drive Components Correctly
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Availability:
1 in stock
Super-precision angular contact ball bearing duplex pair, 110 x 170 x 28 mm, 25° contact angle, ABEC 7 / P4, phenolic cage, medium preload. 2 Pcs.
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$973.43
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM9122WI CR DUM |
| Model | 3MM9122 WI CR DUM |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 110 mm |
| OD | 170 mm |
| Width | 28 mm |
| Material | Steel |
|---|---|
| Series | 9100 |
| Preload | Medium |
| Base Number | 3MM9122WI |
| Industry Terms | spindle bearing, super precision angular contact, precision duplex pair, matched set bearing, ABEC 7 bearing, phenolic cage bearing, machine tool bearing |
| Common Misspellings | Fafner, Faffnir, Fafnier, 3MM9112WI, 3MM9122WL, 3MM9122W1 |
| Application Types | Machine tool spindles, grinding spindles, precision boring heads, rotary tables, high-speed gearboxes |
| Bore Shaft Size | 110 mm (4.331 in) |
| Mpn Variants | 3MM9122WI-CR-DUM, 3MM9122WICRDUM, 3MM-9122-WI-CR-DUM, 3MM9122WIDUM, 3MM 9122 WI CR DUM, 3MM9122WI, 9122WI, MM9122WI |
| Manufacturer Status | Fafnir super precision line now supplied under the Timken brand |
| Compatible With Replaces | Machine tool and grinding spindle positions, 110x170x28 mm 25 deg |
| Precision Class | ABEC 7 / P4 |
| Rolling Elements | Ball |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25° |
| Part Number | 3MM9122WI-CR-DUM |
| Cross Reference 1 | NSK 7022A5 |
|---|---|
| Cross Reference 2 | FAG B7022-E-T-P4S |
| Cross Reference 3 | SKF 7022 ACD/P4A |
Fafnir 3MM9122WI CR DUM is a matched duplex pair of super-precision angular contact ball bearings in the ISO 7022 envelope: 110 mm bore, 170 mm outside diameter, 28 mm width per bearing. Sold as 2 pieces ground together as a set. Unit Quantity: 2 Pcs.
3MM — Fafnir super-precision series with a 25° contact angle; the MM prefix is precision class P4 (ABEC 7).
9122 — Fafnir 91xx block, ISO 70xx dimension series; 9122 is the 7022 size, 110 x 170 x 28 mm.
WI — low shoulder on both rings, the duplex form.
CR — phenolic cage.
DUM — duplex, universally ground, medium preload.
Bore Diameter: 110 mm (4.331 in). Outside Diameter: 170 mm. Width: 28 mm per bearing. Contact Angle: 25°. Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Preload: Medium. Arrangement: duplex pair, universally ground. Closure Type: Open. Bore Type: Straight. Rolling Elements: Ball. Series: 9100.
Envelope: 110 x 170 x 28 mm per bearing (ISO 7022). Universal grinding allows the pair to be mounted back to back (DB), face to face (DF) or in tandem (DT).
25° cross-references: NSK 7022A5, FAG B7022-E-T-P4S, SKF 7022 ACD/P4A. MPN Variants: 3MM9122WI-CR-DUM, 3MM9122WICRDUM, 3MM-9122-WI-CR-DUM, 3MM9122WIDUM, 3MM 9122 WI CR DUM, 3MM9122WI, 9122WI, MM9122WI.
Bore Diameter: 110 mm. Outside Diameter: 170 mm. Width: 28 mm per bearing.
Contact Angle: 25° (3MM). Preload: Medium (DUM).
A matched duplex pair, 2 Pcs, universally ground with phenolic cages.
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