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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 3MM9115WI-CR-DUM super-precision angular contact bearing pair, 75 x 115 x 20 mm, 25° contact angle, phenolic cage, medium preload, P4 (ABEC 7).
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM9115WI CR DUM |
| Model | 7015A 3MM9115 WI CR DUM ABEC7 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 75 mm |
| OD | 115 mm |
| Width | 20 mm |
| Material | Chrome Steel |
|---|---|
| Series | 9100 |
| Preload | Medium (M) |
| Base Number | 7015 |
| Industry Terms | spindle bearing; super precision bearing; duplex pair; matched set; preloaded angular contact; phenolic cage bearing; machine tool bearing |
| Application Types | Machine-tool spindles; grinding heads; high-speed precision rotating assemblies |
| Bore Shaft Size | 75 mm |
| Mpn Variants | 3MM9115WI-DUM; 3MM9115WIDUM; 3MM-9115-WI-DUM; 3MM9115WI CR DUM; 3MM-9115-WI-CR-DUM; 3MM9115WICRDUM; 3MM9115 |
| Manufacturer Status | Legacy Fafnir designation; production passed to Timken |
| Precision Class | ABEC 7 / P4 |
| Precision Rating | ABEC 7 / P4 |
| Rolling Elements | Ball |
| Cage Material | Phenolic |
| Number Of Rows | 1 row per bearing |
| Bore Type | Straight |
| Harmonization Code | 8482.10.50.28 |
| Contact Angle | 25° |
| Mounting Arrangement | DU, universally ground duplex |
| Design Units | Metric |
| Part Number | 3MM9115WI-DUM |
| Closure Type | Open |
Fafnir 3MM9115WI-CR-DUM is a super-precision angular contact ball bearing, supplied as one universally ground duplex pair (2 Pcs) at medium preload. Size: 75 x 115 x 20 mm, 25° contact angle, phenolic cage, open. Country of origin: United States.
3MM — Fafnir super-precision prefix with a 25° contact angle; precision class P4 (ABEC 7).
9115 — the 7015 dimension series, 75 x 115 x 20 mm.
WI — low shoulder on both rings, the duplex form.
CR — phenolic cage.
DU — duplex, universally ground.
M — medium preload.
Bore Diameter: 75 mm.
Outside Diameter: 115 mm.
Overall Width: 20 mm.
Contact Angle: 25°.
Precision Class: ABEC 7 / P4.
Cage Material: phenolic.
Closure Type: open.
Preload: medium.
Mounting Arrangement: DU, universally ground duplex.
Number Of Rows: 1 per bearing.
Rolling Elements: balls.
Unit Quantity: 2 Pcs.
ISO base number 7015. Search forms: 3MM9115WI-DUM, 3MM-9115-WI-CR-DUM, 3MM9115WICRDUM, 3MM9115WI CR DUM, 3MM9115.
75 mm bore, 115 mm outside diameter and 20 mm width, the 7015 dimension series.
3MM is a 25° contact angle, and the MM prefix is precision class P4 (ABEC 7).
DU is a duplex pair, universally ground. M is medium preload.
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