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4 in stock
Super-precision spindle bearing, 60 x 110 x 22 mm, 15° contact angle, machined phenolic cage, light preload universal single. C 56 kN, 20,000 rpm on oil.
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| MFR / Brand | FAG |
|---|---|
| MPN | B7212-C-T-P4S-UL |
| Model | B7212C TPA P4 K5 UL / 212 H C L / 2MM212 / 7212CDP4A |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 60 mm |
| OD | 110 mm |
| Width | 22 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7200 |
| Condition | New |
| Lubricant | None |
| Preload | Light Preload |
| Base Number | 7212 C |
| Industry Terms | Spindle bearing; super precision angular contact bearing; machine tool bearing; universal single; light preload; 15 degree bearing; 60mm bore spindle bearing |
| Common Misspellings | B7212C TPA P4S UL; B7212 CTP4SUL; FAG B7212CT P4S UL; B7212-C-T-P4-UL; Angular Contract Bearing |
| Application Types | Machine tool main spindles; grinding spindles; milling and turning spindles; high-precision gearboxes; rotary tables |
| Bolt Center To Center Length | Not applicable |
| Bore Shaft Size | 60 mm (2.3622 in) |
| Mpn Variants | B7212C.T.P4S.UL; B7212-C-T-P4S-UL; B7212CTP4SUL; B7212C.T.PA.P4S.UL; B7212-C-TPA-P4S-UL; B7212CTPAP4K5UL; B7212 C T P4S UL |
| Manufacturer Status | Active FAG catalogue item |
| Arrangement Configuration | UL — universally ground single, light preload |
| Precision Class | P4S (ABEC 7 tolerances with ABEC 9 running accuracy) |
| Additional Attributes | Fatigue load limit Cur 3.3 kN; shaft shoulder diameter da 69.5 mm; housing shoulder diameter Da 101.5 mm; minimum chamfer rmin 1.5 mm; maximum fillet radius ra 0.6 mm; pressure-cone apex distance a 22.5 mm; lubrication injection pitch diameter 77–81.9 mm; non-separable |
| Min Temp | -30°C |
| Cage Type | Machined phenolic (fabric-base laminate) |
| Dynamic Load Rating | 56 kN / 12589 lbf |
| Static Load Rating | 31 kN / 6969 lbf |
| Precision Rating | P4S / ABEC 7-9 |
| Rolling Elements | Ball |
| Max Temp | 100°C |
| Item Weight | 779 g (1.72 lbs) |
| Cage Material | Fabric-base laminate phenolic |
| Limiting Speed | 20,000 rpm oil / 13,000 rpm grease |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without snap ring |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Universal (DB, DF or DT in any combination) |
| Design Units | Metric |
| Bearing Material | Through-hardened bearing steel |
| Running Accuracy | High Precision |
| Part Number | B7212-C-T-P4S-UL |
| Running Accuracy Radial And Axial Runout | P4S super precision — ABEC 9 running accuracy |
| Cross Reference 1 | SKF 7212 CD-GA/P4A |
|---|---|
| Cross Reference 2 | NSK 7212CTYSULP4 |
| Cross Reference 3 | RHP 7212CTSULP4 (also 7212CTRSULP4, 7212CTRSULP3) |
| Cross Reference 4 | SNR 7212CG1U J74 |
| Cross Reference 6 | Fafnir / Timken 2MM212WI-CRUL |
| Cross Reference 7 | SNFA E260-7CE1-UL |
| Cross Reference 8 | MRC 212RDS-ABEC7 (also 212RDS-BKE#7); GPZ 36212 |
| Cross Reference 9 | B7212-E-T-P4S-UL (related size, same 60 x 110 x 22 mm envelope, 25° contact angle); B7212-C-2RSD-T-P4S-UL (related size, sealed both sides) |
A FAG B7212-C-T-P4S-UL super-precision angular contact spindle bearing. Single row, 60 mm bore, 110 mm outside diameter, 22 mm width, open on both faces, with solid machined rings and a machined phenolic cage. Non-separable.
B denotes the FAG spindle bearing range with large-diameter balls. C is a 15° contact angle. T, sometimes written TPA, is a fabric-base laminate phenolic cage. P4S is the super-precision class: ABEC 7 dimensional tolerances with ABEC 9 running accuracy. UL is a universally ground single at light preload.
The 15° contact angle and the large balls of the B range put this bearing at the high-rigidity, medium-speed end of the spindle range: a basic dynamic rating of 56 kN and static rating of 31 kN, with a fatigue load limit of 3.3 kN. Limiting speed is 20,000 rpm on oil and 13,000 rpm on grease. The phenolic cage is light and low-friction, and its self-lubricating character supports the oil-lubricated speed rating.
One piece, a universally ground single. Universal grinding means any number of these bearings can be combined back-to-back, face-to-face or in tandem, and the light preload arises automatically when the rings are clamped together.
Shaft shoulder diameter 69.5 mm, housing shoulder diameter 101.5 mm. Minimum chamfer 1.5 mm, maximum fillet radius 0.6 mm. Distance between the apexes of the pressure cones is 22.5 mm. Lubrication injection pitch diameter 77 to 81.9 mm.
Published equivalents at the same size, angle, cage and preload include SKF 7212 CD-GA/P4A, NSK 7212CTYSULP4, RHP 7212CTSULP4, SNR 7212CG1U J74, Koyo 7212CGLFGP4, Fafnir 2MM212WI-CRUL, SNFA E260-7CE1-UL and MRC 212RDS-ABEC7. The B7212-E variant is a 25° version of the same envelope and is a related size, as is the sealed B7212-C-2RSD-T-P4S-UL.
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