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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.
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2 in stock
Fafnir 3MM212WICRDUM super-precision angular contact ball bearing, 60 x 110 x 22 mm, 25° contact angle, ABEC 7 / P4, duplex pair at medium preload. 2 Pcs.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM212WICRDUM |
| Model | 3 MM 212 WI CR DUM / ABEC7 / 7212-A5 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 60 mm |
| OD | 110 mm |
| Width | 22 mm |
| Material | Bearing Steel |
|---|---|
| Series | 200WI |
| Preload | Medium |
| Base Number | 7212 |
| Industry Terms | Spindle bearing; super precision bearing; machine tool bearing; duplex pair; ABEC 7 angular contact |
| Common Misspellings | Fafner; Faffnir; Fanfir; 3MM212W1; 3MM212WIDUM |
| Application Types | Machine tool spindles; grinding spindles; high-speed gearboxes; precision rotary tables |
| Bore Shaft Size | 60 mm (2.362 in) |
| Mpn Variants | 3MM212WI-DUM; 3MM212WICRDUM; 3MM-212-WI-CR-DUM; 3MM212WI; 3MM 212 WI CR DUM; 3MM212WI CR DUM |
| Manufacturer Status | Fafnir is the Timken super-precision line |
| Arrangement Configuration | Duplex, universally ground |
| Precision Class | ABEC 7 / P4 |
| Cage Type | CR, outer land riding |
| Precision Rating | ABEC 7 / P4 |
| Rolling Elements | Ball |
| Cage Material | Phenolic |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.28 |
| Contact Angle | 25° |
| Part Number | 3MM212WI-CR-DUM |
| Closure Type | Open |
Fafnir 3MM212WICRDUM is a super-precision single-row angular contact ball bearing supplied as a universally ground duplex pair, 60 x 110 x 22 mm, with a 25° contact angle, ABEC 7 / ISO P4 precision, a phenolic outer land riding cage and medium preload. Unit Quantity: 2 Pcs.
3MM — Fafnir super-precision spindle execution at a 25° contact angle, ABEC 7 / ISO P4 precision.
212 — ISO 72 dimension series, bore code 12 = 60 mm bore.
WI — low shoulder on both rings.
CR — phenolic cage, outer land riding.
DUM — duplex universally ground pair at medium preload.
Bore Diameter: 60 mm (2.362 in). Outside Diameter: 110 mm. Overall Width: 22 mm. Contact Angle: 25°. Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Cage Type: CR, outer land riding. Rolling Elements: Steel balls. Number of Rows: 1 per bearing. Preload: Medium. Arrangement: Duplex, universally ground. Unit Quantity: 2 Pcs.
ISO 7212 envelope: 60 mm bore, 110 mm outside diameter, 22 mm width. Bore Type: Straight. Closure Type: Open.
Searchable variants of the Fafnir number: 3MM212WI-DUM, 3MM212WICRDUM, 3MM-212-WI-CR-DUM, 3MM212WI, 3MM 212 WI CR DUM. The 2MM212WI on the same 60 x 110 x 22 mm envelope has a 15° contact angle.
Bore Diameter: 60 mm. Outside Diameter: 110 mm. Overall Width: 22 mm.
DUM is a duplex universally ground pair at medium preload.
Contact Angle: 25°. Precision Class: ABEC 7 / P4.
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