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Super precision angular contact ball bearing, 100 x 140 x 20 mm, 15° contact angle, phenolic cage, universal light preload, 9,500 rpm on grease.
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| MFR / Brand | FAG |
|---|---|
| MPN | B71920CTPAP4UL |
| Model | B 71920 C TPA P4 UL / 7920-C / 71920CDP4A / 2MM9320WI |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 100 mm |
| OD | 140 mm |
| Width | 20 mm |
| Material | Bearing Steel |
|---|---|
| Series | 71900 |
| Condition | New |
| Lubricant | Oil/Grease |
| Preload | Light |
| Base Number | 71920 |
| Industry Terms | Spindle bearing, super precision bearing, machine tool bearing, high speed angular contact bearing |
| Bore Shaft Size | 100 mm |
| Mpn Variants | B71920CTPAP4UL, B-71920-C-TPA-P4-UL, B71920 C TPA P4 UL, B71920C.T.P4S.UL |
| Additional Attributes | Fatigue load limit Cur 4.3 kN; axial rigidity 94 N/µm light, 160 N/µm medium, 228 N/µm heavy; lift-off force 968 N light; shaft shoulder da 107 mm h12; outer ring shoulder Da 133 mm H12; ra max 0.6 mm; r min 1.1 mm; pressure cone apex distance a 26.2 mm |
| Min Temp | -30 °C |
| Cage Type | Not specified |
| Dynamic Load Rating | 60 kN (Cr, radial) |
| Static Load Rating | 45 kN (C0r, radial) |
| Precision Rating | ABEC 7 / P4 |
| Rolling Elements | Ball |
| Max Temp | 100 °C |
| Item Weight | 0.78 kg (1.72 lb) |
| Cage Material | Phenolic (laminated fabric) |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Internal Clearance | N/A - preloaded bearing |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15 ° (degrees of arc) |
| Mounting Arrangement | Universal - matchable in pairs or sets (back-to-back, face-to-face or tandem) |
| Part Number | B71920C.TPA.P4.UL |
| Cross Reference 1 | SKF 71920 CDGA/P4A |
|---|---|
| Cross Reference 2 | NSK 7920CTYSULP4 |
| Cross Reference 3 | Fafnir 2MM9320WI |
| Cross Reference 4 | B71920E.T.P4S.UL (related size, same envelope, 25° contact angle) |
FAG B71920C.TPA.P4.UL super precision angular contact ball bearing, also called a spindle bearing. Series B719, ISO 719 dimension series. Bore: 100 mm. Outside diameter: 140 mm. Width: 20 mm. Single row, open, straight bore. Searchable forms: B71920C.TPA.P4.UL, B71920CTPAP4UL, B-71920-C-TPA-P4-UL, B71920 C TPA P4 UL.
Contact Angle: 15°. Cage Material: laminated fabric phenolic. Precision Class: P4, ABEC 7. Preload: light. Arrangement: universal single bearing, adjusted for mounting in pairs or sets. Preload force in a light-preload pair: 316 N.
A 15° contact angle favours speed and radial stiffness and carries less thrust than a 25° bearing on the same envelope. Basic dynamic load rating, radial: 60 kN. Basic static load rating, radial: 45 kN. Fatigue load limit, radial: 4.3 kN. Limiting speed: 9,500 rpm on grease, 14,000 rpm on oil. Axial rigidity in light preload: 94 N/µm. A phenolic cage runs quietly at high speed and holds oil in its fabric structure.
One bearing. Universal design: two or more mount together back-to-back, face-to-face or in tandem, and a pair sets light preload without shims or measurement.
Diameter shaft shoulder: 107 mm. Shoulder diameter outer ring: 133 mm. Maximum recess radius: 0.6 mm. Minimum chamfer dimension: 1.1 mm. Distance between the apexes of the pressure cones: 26.2 mm. Operating temperature range: -30 °C to 100 °C. Weight: 0.78 kg.
Current Schaeffler designation for this bearing: B71920C.T.P4S.UL. Equivalents at the same 15° contact angle and P4 class: SKF 71920 CDGA/P4A, NSK 7920CTYSULP4, Fafnir 2MM9320WI. A B71920E on the same envelope carries a 25° contact angle and is a related size.
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