Timken vs. SKF Bearings: The Difference Between Tier-1 Bearing Brands
When sourcing a replacement bearing, you will often find both Timken and SKF options for
Availability:
3 in stock
Matched duplex set (2 pcs) of 55 mm-bore super-precision angular contact ball bearings; 15° contact angle, light preload, ABEC 7/9 (P4S) — built for high-speed machine-tool spindles.
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$151.56
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| MFR / Brand | Timken |
|---|---|
| MPN | 2MM211WI-DUL |
| Model | 7211 C T DUL P4 / 2MM211WI CR DUL / 211HDL / 7211CDP4ADGA |
| Bearing Type | Angular Contact Ball Bearing |
| ID | 55 mm |
| OD | 100 mm |
| Width | 21 mm |
| Material | Chrome Steel |
|---|---|
| Condition | New |
| Preload | Light (DUL) |
| Base Number | 211 (ISO 7211) |
| Industry Terms | spindle bearing; machine tool bearing; duplex bearing set; matched pair bearing; ABEC 7 bearing; P4S bearing; super precision angular contact bearing |
| Common Misspellings | Timkin 2MM211WI; Timpken; Fafner 2MM211WI; Fafnier; 2MM211WIDUL; 2MM 211 WI DUL; 2mm211widul; 7211 CDUL |
| Application Types | Machine-tool spindles; high-speed grinding spindles; precision milling and boring spindles; jig borers; high-speed routers |
| Total Width | 42 mm (1.6535 in) as a duplex pair |
| Bore Shaft Size | 55 mm (2.1654 in) |
| Mpn Variants | 2MM211WICRDUL; 7211C-T-P4S-DUL; 7211CCRDULP4S; 2MM211WI |
| Distributor Stock Numbers | Applied 101020594; Motion 00112521 |
| Compatible With Replaces | Timken 7211C-T-P4S-DUL; Timken 7211C 15° duplex light-preload sets |
| Arrangement Configuration | Duplex pair, universally ground (DU); mountable back-to-back (DB), face-to-face (DF) or tandem (DT) |
| Precision Class | ABEC 7/9 / P4S |
| Dynamic Load Rating C1 | 58.7 kN (13,200 lbf) |
| Additional Attributes | Dynamic rating (ISO 281, per row): 53.4 kN (12,000 lbf); Max shaft fillet radius: 1.5 mm (0.0591 in); Outer-ring 'to clear' radius: 1.5 mm (0.0591 in); Shaft backing shoulder diameter: 63.3 mm (2.4921 in); Housing backing shoulder diameter: 92.2 mm (3.6299 in); Cage material (Timken): MBR molded phenolic; Ball material: chrome steel |
| Item Weight | 2.78 lb (1.26 kg) per 2-pc set; 1.39 lb (0.63 kg) each |
| Cage Material | Phenolic |
| Limiting Speed | 14,500 rpm (grease) / 29,000 rpm (oil) |
| Number Of Rows | 2 (duplex set) |
| Contact Angle | 15° |
| Mounting Arrangement | Duplex universal (DU) |
| Design Units | Metric |
| Bearing Class | Super precision |
| Bearing Material | Chrome steel |
| Part Number | 2MM211WI DUL |
| Running Accuracy Radial And Axial Runout | ABEC 9 / ISO P2 axial running tolerances; non-critical features to ABEC 7 / ISO P4 |
| Cross Reference 1 | 7211C-T-P4S-DUL (Timken world part number) |
|---|---|
| Cross Reference 2 | 2MM211WICRDUL |
| Cross Reference 3 | 7211CCRDULP4S |
The Timken Fafnir 2MM211WI DUL is a super-precision angular contact ball bearing supplied as a universally ground duplex set (2 pieces), with a 55 mm bore, 100 mm OD and 21 mm width per bearing (42 mm overall).
It has a 15° contact angle, a molded phenolic outer-land-riding cage (Timken CR code), chrome-steel balls, ABEC 7/9 (ISO P4S) precision, and a light factory preload for high axial and radial rigidity with precise running accuracy.
Dynamic radial rating: 58.7 kN (13,200 lbf) per bearing, per Timken
Static radial rating: 40.0 kN (9,000 lbf) per bearing
Limiting speed: 14,500 rpm (grease), 29,000 rpm (oil)
Supplied as a universally ground duplex set of 2 pieces with a light factory preload.
Because the rings are universally (flush) ground, the pair can be mounted back-to-back (DB), face-to-face (DF) or in tandem (DT) to suit the spindle design.
Timken’s world part number is 7211C-T-P4S-DUL; typical uses include high-speed grinding, milling and boring spindles, jig borers and precision routers.
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