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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:
2 in stock
Super-precision angular contact ball bearing, 40 x 80 x 18 mm, 25 degree contact angle, phenolic cage, ABEC 7 / P4, universally ground. Open, no seals.
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$89.79
2 in stock
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM208WICR |
| Model | 3 MM 208 WI CR / 7208ACD 7208A5 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 40 mm |
| OD | 80 mm |
| Width | 18 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7200 |
| Base Number | 7208 |
| Industry Terms | super precision angular contact bearing, spindle bearing, ABEC 7 bearing, phenolic cage bearing, universally ground, 25 degree contact angle |
| Common Misspellings | Fafnier, Fafner, 3MM208W1CR, 3MM-208WICR, 3MM208 WI CR, 3M208WICR |
| Application Types | Machine tool spindles, boring and milling heads, grinding spindles, precision gearboxes |
| Bore Shaft Size | 40 mm |
| Mpn Variants | 3MM208WICR, 3MM208WI CR, 3MM-208-WI-CR, 3MM 208 WI CR, 3MM208WI |
| Manufacturer Status | Fafnir brand discontinued; range now sold by Timken |
| Compatible With Replaces | Fafnir / Timken 3MM208WICR, 7208 25° super-precision spindle positions |
| Precision Class | ABEC 7 / P4 |
| Cage Type | Composition retainer (CR), one-piece |
| Precision Rating | ABEC 7 / P4 |
| Rolling Elements | Ball |
| Cage Material | Phenolic laminated fabric |
| Number Of Rows | Single Row |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50.28 |
| Contact Angle | 25° |
| Part Number | 3MM208WICR |
| Cross Reference 1 | SKF 7208 ACD/P4A |
|---|---|
| Cross Reference 2 | NSK 7208A5TYNP4 |
| Cross Reference 3 | FAG B7208-E-T-P4S |
| Cross Reference 4 | NSK 7208A - 30 deg contact angle, not 25 deg |
| Cross Reference 5 | NSK 7208CTYNP4 - 15 deg contact angle, not 25 deg |
| Cross Reference 6 | Fafnir 2MM208WI - 15 deg contact angle, not 25 deg |
Fafnir 3MM208WICR is a super-precision single-row angular contact ball bearing, universally ground, with a phenolic cage. Unit Quantity: 1 Pc. Bore Diameter: 40 mm. Outside Diameter: 80 mm. Overall Width: 18 mm. Contact Angle: 25°. Number Of Rows: Single Row. Rolling Elements: Balls. Bore Type: Straight. Closure Type: Open. It carries radial load plus thrust in one direction.
3MM — Fafnir super-precision series; the 3 gives a 25° contact angle (2MM is 15°). MM is the ABEC 7 / ISO P4 precision class.
208 — 200 series, bore code 08, giving a 40 mm bore.
WI — low shoulder on both rings, the duplex form.
CR — composition retainer, a phenolic laminated-fabric cage.
Precision Class: ABEC 7 / P4. Cage Material: Phenolic laminated fabric. Cage Type: Composition retainer (CR), one-piece. Base Number: 7208. Series: Fafnir 3MM 200 series WI. Material: Bearing Steel. Harmonization Code: 8482.10.50.28.
Bore Diameter: 40 mm. Outside Diameter: 80 mm. Overall Width: 18 mm. The WI series is universally ground, so two bearings mount face-to-face, back-to-back or in tandem. Factory-matched pairs carry the DUL, DUM and DUH designations.
Fafnir is now sold by Timken. Cross-Reference 1: SKF 7208 ACD/P4A. Cross-Reference 2: NSK 7208A5TYNP4. Cross-Reference 3: FAG B7208-E-T-P4S. All three are 40 x 80 x 18 mm at a 25° contact angle (SKF AC, NSK A5 and FAG E are the 25° codes). Cross-Reference 4: NSK 7208A, the same size at a 30° contact angle. Cross-Reference 5: NSK 7208CTYNP4, the same size at 15°. Cross-Reference 6: Fafnir 2MM208WI, the same size at 15°. B7208-E-T-DUL-P4 is a duplex-pair designation for the same size.
Bore Diameter: 40 mm. Outside Diameter: 80 mm. Overall Width: 18 mm. Contact Angle: 25°.
3MM is the Fafnir super-precision series at a 25° contact angle in ABEC 7 / ISO P4 class. CR is a composition retainer: a phenolic laminated-fabric cage.
Unit Quantity: 1 Pc, a single universally ground bearing.
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Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Tapered, cylindrical, and spherical roller bearings all solve the same basic problem, carrying more load
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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