store Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
3 in stock
Super-precision angular contact ball bearing, 75 mm bore, 115 mm outside diameter, 20 mm width, 15° contact angle, duplex light preload, phenolic cage. 2 Pcs matched pair.
List Price
$456.62
3 in stock
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| MFR / Brand | Timken |
|---|---|
| MPN | 2MM9115WIDUL |
| GTIN | 087796072794 |
| Model | 2MM9115WIDUL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 75 mm |
| OD | 115 mm |
| Width | 20 mm |
| Material | Chrome Steel |
|---|---|
| Series | 9100 |
| Lubricant | Oil |
| Base Number | 7015 |
| Industry Terms | Spindle bearing, super precision angular contact, duplex matched pair, machine tool bearing, ABEC 7 bearing |
| Common Misspellings | Fafner 2MM9115WI, Faffnir 2MM9115WICRDUL, Timkin 2MM9115WI, 2M9115WI |
| Application Types | Machine tool spindles, grinding spindles, high-speed milling heads, precision boring spindles |
| Bore Shaft Size | 75 mm (2.9528 in) |
| Mpn Variants | 2MM9115WI-CR-DUL, 2MM9115WICRDUL, 2MM9115WI-DUL, 2MM 9115 WI CR DUL, 2MM9115WIDUL |
| Rolling Elements | Ball |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Part Number | 2MM9115WI-CR-DUL |
| Cross Reference 6 | 2MM9115WI-CR-DUM (medium preload, related) |
|---|---|
| Cross Reference 7 | 3MM9115WI-CR-DUL (25°, related size) |
A matched pair of Fafnir super-precision angular contact ball bearings, part number 2MM9115WI-CR-DUL. Bore is 75 mm, outside diameter 115 mm and each ring width 20 mm, giving an ISO 7015 envelope in the light dimension series. Fafnir is the super-precision line of the Timken Company.
The leading 2 of 2MM sets a 15° contact angle, where 3MM sets 25°. The MM prefix carries super-precision class P4S, ABEC 7 dimensionally with ABEC 9 running accuracy, which is why the same part reads as 7015 C CR DUL P4S in ISO form. The leading 9 in 9115 places the bearing in the ISO 70 light series, so the outside diameter is 115 mm rather than the 130 mm of a 7215. WI is the super-precision angular contact family, CR a phenolic cage riding on the outer ring land, DU a universally ground duplex pair and L light preload.
A 15° contact angle carries less thrust and permits higher speed than a 25° angle, and light preload removes internal clearance while keeping running torque and heat generation low. The 70 light series gives a thinner cross-section for the same bore, lowering mass and raising limiting speed at the cost of load capacity. A phenolic land-riding cage has low mass and retains oil in the resin, at a lower temperature ceiling than bronze or steel.
2 Pcs, supplied as one duplex pair ground for light preload. No spacer rings, lock nut or housing are included.
Universally ground rings reach the designed preload when the pair is clamped solid against the flush ground faces, without shimming, and the arrangement is set by which faces are brought together. Handling is by the outer ring on a clean surface, and a phenolic cage is kept clear of solvents that attack the resin.
Same-spec equivalents are the 7015 C P4 DUL forms: SKF 7015 CD/P4A in a light-preload duplex arrangement, FAG B7015-C-T-P4S-UL, NSK 7015 CTR DUL P4 and RHP 7015CTDULP4. A 7015 AC or A5 variant is a related size at 25° or 30° and changes the thrust and speed balance, so it is not a substitution. 2MM9115WI-CR-DUM and -CR-DUH share the envelope and angle at higher preload.
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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