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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
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FAG B71909E.T.P4S.UL angular contact spindle bearing, 45 x 68 x 12 mm, 25° contact angle, phenolic cage, P4S, universal light preload. 19,000 rpm grease.
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| MFR / Brand | FAG |
|---|---|
| MPN | B71909E.T.P4S.UL |
| Model | B71909-E-T-P4S-UL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 45 mm |
| OD | 68 mm |
| Width | 12 mm |
| Preload | Light (UL) |
|---|---|
| Dynamic Load Rating | 18,200 N |
| Static Load Rating | 10,600 N |
| Precision Rating | ABEC 7 / P4S |
| Series | 719 |
| Max Temp | 100 °C |
| Min Temp | -30 °C |
| Rolling Elements | Ball |
| Item Weight | 0.127 kg (0.28 lb) |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25° |
| Mounting Arrangement | Universal (DB, DF or DT) |
| Limiting Speed | 19,000 rpm grease; 28,000 rpm oil |
| Cage Type | Solid window cage |
| Base Number | 71909 |
| Industry Terms | spindle bearing, angular contact ball bearing, 25 degree, universal matched, light preload, super precision, P4S, 719 series |
| Common Misspellings | B 71909 E T P4 SUL, B71909-E.T.P4S.UL, B71909ETP4S |
| Application Types | Machine tool spindles, grinding spindles, high-speed motor spindles |
| Overall Width | 12 mm |
| Mpn Variants | B71909-E-T-P4S-UL, B71909E.T.P4S.UL, B71909ETP4SUL, B71909E.TPA.P4.UL, B71909E, 71909E, 7909 |
| Compatible With Replaces | Current designation: FAG B71909-E-T-P4S-UL; replaces B71909E.TPA.P4.UL |
| Precision Class | ABEC 7 / P4S |
| Additional Attributes | Preload force light 116 N / medium 470 N / heavy 1,028 N; axial rigidity light 99 N/µm; lift-off force light 336 N; shaft shoulder 50 mm; outer ring shoulder 63.5 mm; injection pitch 52.3-54.5 mm; pressure cone apex distance 19.2 mm |
| Cross Reference 1 | SKF 71909 ACD/P4A |
|---|---|
| Cross Reference 2 | NSK 7909A5TRSULP4 |
| Cross Reference 3 | Fafnir 3MM9309WI |
FAG B71909E.T.P4S.UL (B71909-E-T-P4S-UL) is a single-row angular contact spindle bearing, universally matchable with light preload. Bore Diameter: 45 mm. Outside Diameter: 68 mm. Overall Width: 12 mm. Contact Angle: 25°. Cage Material: Phenolic. Precision Class: ABEC 7 / P4S. Closure Type: Open.
B719 — FAG spindle bearing, ISO dimension series 19 (719xx).
09 — bore code, 45 mm.
E — 25° contact angle.
T — solid window cage of fabric-base laminate phenolic.
P4S — FAG restricted tolerance: P4 dimensional accuracy with tighter running accuracy.
UL — universal design for mounting in any arrangement: Light preload.
Dynamic Load Rating: 18,200 N. Static Load Rating: 10,600 N. Limiting Speed: 19,000 rpm grease; 28,000 rpm oil. Item Weight: 0.127 kg (0.28 lb). Preload force, light: 116 N. Axial rigidity, light: 99 N/µm. Lift-off force, light: 336 N. Operating temperature range: −30 to 100 °C. The thin 719 section suits compact spindles with large shaft diameters.
Shaft shoulder diameter: 50 mm. Outer ring shoulder diameter: 63.5 mm. Maximum fillet radius: 0.6 mm. Minimum chamfer: 0.6 mm. Lubrication injection pitch diameter: 52.3 to 54.5 mm. Pressure cone apex distance: 19.2 mm.
Unit Quantity: 1 Pc. Single universal bearing for DB, DF or DT sets.
Current Schaeffler designation: FAG B71909-E-T-P4S-UL. Same-envelope 25° equivalents: SKF 71909 ACD/P4A, NSK 7909A5TRSULP4, Fafnir 3MM9309WI. Precision class and preload vary by the maker’s suffix.
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