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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
9 in stock
Super-precision angular contact ball bearing, 70 mm bore, 125 mm outside diameter, 24 mm width, 15° contact angle, duplex heavy preload. 2 Pcs matched pair.
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$473.87
9 in stock
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 2MM214WIDUH |
| Model | 2 MM 214 WI DUH / 7214 C T DUH P4 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 70 mm |
| OD | 125 mm |
| Width | 24 mm |
| Base Number | 7214 |
|---|---|
| Industry Terms | Spindle bearing, super precision angular contact, duplex matched pair, machine tool bearing, ABEC 7 bearing |
| Common Misspellings | Fafner 2MM214WI, Faffnir 2MM214WIDUH, Timkin 2MM214WI, 2M214WI |
| Application Types | Machine tool spindles, grinding spindles, precision milling and boring heads, high-speed gearbox positions |
| Bore Shaft Size | 70 mm (2.7559 in) |
| Mpn Variants | 2MM214WI-DUH, 2MM214WIDUH, 2-MM-214-WI-DUH, 2MM 214 WI DUH, 2MM214WI DUH |
| Rolling Elements | Ball |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Part Number | 2MM214WI-DUH |
| Cross Reference 6 | 2MM214WI-DUL (light preload, related) |
|---|---|
| Cross Reference 7 | 2MM214WI-DUM (medium preload, related) |
A matched pair of Fafnir super-precision angular contact ball bearings, part number 2MM214WI-DUH. Bore is 70 mm, outside diameter 125 mm and each ring width 24 mm, giving an ISO 7214 envelope. Fafnir is the super-precision line of the Timken Company, and the WI family is its spindle-grade angular contact series.
In the Fafnir scheme the leading 2 of 2MM sets a 15° contact angle, and a 3MM prefix would set 25°. The MM prefix carries super-precision class P4S, equivalent to ABEC 7 dimensionally with ABEC 9 running accuracy. The absence of a leading 9 in 214 places the bearing in the ISO 72 dimension series rather than the lighter 70 series. WI identifies the super-precision angular contact family. DU is a universally ground duplex pair, and the closing H is heavy preload; L and M are the light and medium steps in the same scheme.
A 15° contact angle favours speed and radial stiffness over thrust capacity; the 25° equivalent trades the reverse way. Heavy preload raises axial and radial stiffness and reduces non-repeatable runout under load, at the cost of higher running torque and heat generation, so it suits stiff, moderate-speed spindle positions rather than the highest speed ranges. Universal grinding means either ring face may be paired, so the same two bearings can be arranged back to back, face to face or in tandem and still reach the specified preload.
2 Pcs, supplied as one duplex pair ground for heavy preload.
Same-spec equivalents in other schemes are the 7214 C P4 DUH forms: SKF 7214 CD/P4ADGB class, FAG B7214-C-T-P4S-UL and NSK 7214 CTR DUH P4. A 7214 AC or A5 variant is a related size with a 25° or 30° contact angle and a different stiffness and thrust characteristic, not a substitution. 2MM214WI-DUL and 2MM214WI-DUM share the envelope and angle at light and medium preload.
Rockwell’s own product page for the Kinetix 6000 is down
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