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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Availability:
1 in stock
Angular contact spindle bearing, 170 x 230 x 28 mm, 15° contact angle, Light preload 742 N. FAG B71934C.TPA.P4.UL, phenolic cage, ABEC 7, 5,600 rpm grease.
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| MFR / Brand | FAG |
|---|---|
| MPN | B71934C.TPA.P4.UL |
| Model | B71934-C-T-P4S-UL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 170 mm |
| OD | 230 mm |
| Width | 28 mm |
| Series | B719 |
|---|---|
| Preload | Light (742 N) |
| Material | Bearing Steel |
| Industry Terms | super precision spindle bearing, angular contact ball bearing, machine tool spindle bearing, universal matched bearing |
| Mpn Variants | B71934C.TPA.P4.UL, B71934CTPAP4UL, B-71934-C-TPA-P4-UL, B71934-C-T-P4S-UL, B71934C, 7934C |
| Precision Class | ABEC 7 / P4 |
| Additional Attributes | Fatigue load limit 8,600 N; shaft shoulder 180 mm; housing shoulder 219 mm; pressure cone apex distance 40.8 mm |
| Min Temp | -30 °C |
| Dynamic Load Rating | 133,000 N |
| Static Load Rating | 115,000 N |
| Rolling Elements | Ball |
| Max Temp | 100 °C |
| Item Weight | 2.74 kg (6.04 lb) |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Limiting Speed | 5,600 rpm grease; 8,500 rpm oil |
| Lubricant | grease or oil |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Universal (U) |
| Cross Reference 1 | SKF 71934 CD/P4A |
|---|---|
| Cross Reference 2 | NSK 7934C |
| Cross Reference 3 | Fafnir 2MM9334WI |
FAG B71934C.TPA.P4.UL super-precision spindle bearing (marking B-71934-C-TPA-P4-UL), current Schaeffler designation B71934-C-T-P4S-UL. Single-row angular contact ball bearing, 719 series, universally ground, Light preload. Bore Diameter: 170 mm. Outside Diameter: 230 mm. Width: 28 mm. Contact Angle: 15°. Preload: Light (742 N).
B719 — FAG spindle bearing, ISO dimension series 19 (719xx).
34 — bore code, 34 x 5 = 170 mm.
C — 15° contact angle, for high speed with moderate axial rigidity.
TPA — laminated fabric (phenolic) cage. The current Schaeffler designation uses T.
P4 — ISO tolerance class P4, equivalent to ABEC 7.
U — universal design. The bearing can be paired back-to-back, face-to-face or in tandem with any other U bearing of the same size.
L — Light preload.
Dynamic Load Rating: 133,000 N. Static Load Rating: 115,000 N. Fatigue Load Limit: 8,600 N. Limiting Speed: 5,600 rpm grease; 8,500 rpm oil. Cage Material: Phenolic. Precision Class: ABEC 7 / P4. Operating Temperature: -30 °C to 100 °C. Item Weight: 2.74 kg (6.04 lb). Lubricant: grease or oil.
Preload: Light, 742 N for a universal pair in back-to-back or face-to-face arrangement. The same size is also built with Medium (2,375 N) and Heavy (4,770 N) preload. Light preload gives the highest speed capability of the three.
Shaft shoulder diameter: 180 mm. Housing shoulder diameter: 219 mm. Distance between pressure cone apexes: 40.8 mm.
Unit Quantity: 1 Pc. Single universal bearing. Closure Type: Open. Number Of Rows: 1.
Same 170 x 230 x 28 mm envelope and 15° contact angle: SKF 71934 CD/P4A, NSK 7934C, Fafnir 2MM9334WI. Schaeffler lists B71934-C-T-P4S-UL as the current designation replacing B71934C.TPA.P4.UL.
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