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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
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1 in stock
Thin-section super-precision angular contact ball bearing, 50 mm bore, 72 mm OD, 12 mm wide, 25° contact angle, extra light preload, phenolic cage.
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| MFR / Brand | SKF |
|---|---|
| MPN | 71910 ACD/P4ADGA |
| GTIN | 7316577737595 |
| Model | 71910 ACD P4A DGA / 3MM9310WI CR SUL / 7910A5 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 50 mm |
| OD | 72 mm |
| Width | 12 mm |
| Material | Bearing Steel |
|---|---|
| Series | 71900 |
| Preload | Extra light |
| Base Number | 71910 |
| Industry Terms | thin section spindle bearing; super precision angular contact; machine tool bearing; 719 series bearing; light preload spindle bearing |
| Common Misspellings | 71910ACD/P4A DGA; 71910-ACDGAP4A; SKF 71910ADC/P4A; 71910ACDGA P4; 7191OACDGA/P4A |
| Application Types | Compact high-speed spindles; precision rotary axes; machine tool sub-spindles; ball screw support positions |
| Bore Shaft Size | 50 mm (1.9685 in) |
| Mpn Variants | 71910 ACD/P4ADGA; 71910ACDGA/P4A; 71910-ACD-P4A-DGA; 71910ACDP4ADGA; 7910 |
| Precision Class | ABEC 7 / ISO P4A |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.68 |
| Contact Angle | 25° |
| Part Number | 71910 ACD/P4ADGA |
| Cross Reference 1 | NSK 7910A5TRSUL - light preload, not extra light |
|---|---|
| Cross Reference 2 | FAG B71910E.T.P4S.UL - light preload, not extra light |
| Cross Reference 3 | Fafnir 3MM9310WI-CR-SUL - light preload, not extra light |
SKF 71910 ACD/P4A DGA thin-section super-precision single-row angular contact ball bearing. Bore Diameter: 50 mm. Outside Diameter: 72 mm. Overall Width: 12 mm. Contact Angle: 25°. Precision Class: ABEC 7 / ISO P4A. Preload: Extra light. Number Of Rows: 1. Closure Type: Open. Unit Quantity: 1 Pc.
71910 — single-row angular contact ball bearing, 719 thin section, 50 x 72 x 12 mm.
AC — 25° contact angle in the SKF scheme.
D — super-precision spindle bearing design.
P4A — ABEC 7 super-precision class.
DGA — universally matchable, extra light preload.
Dynamic Load Rating (C): 12.7 kN. Static Load Rating (C0): 9.8 kN. Contact Angle: 25°. Precision Class: ABEC 7 / ISO P4A. Preload: Extra light. Cage Material: Phenolic. Operating Temperature Range: -30 °C to +120 °C. Series: 71900. Base Number: 71910.
Bore Diameter: 50 mm. Outside Diameter: 72 mm. Overall Width: 12 mm. Radial section height: 11 mm. Universal matching: the ring faces are ground so any two bearings of this designation reach the tabulated extra light preload in back-to-back, face-to-face or tandem arrangement.
Super-precision bearings in the 71910 envelope at 25° and P4 class: NSK 7910A5TRSUL, FAG B71910E.T.P4S.UL and Fafnir 3MM9310WI-CR-SUL. These carry light preload (SUL / UL), against extra light preload on the DGA. The SKF 71910 CD/P4A shares the 50 x 72 x 12 mm envelope at 15°.
Other forms of the number: 71910 ACD/P4ADGA, 71910ACDGA/P4A, 71910-ACD-P4A-DGA, 71910ACDP4ADGA, 7910.
The contact angle is 25°, set by the AC in the designation.
DGA marks a universally matchable bearing with extra light preload.
Bore Diameter is 50 mm, Outside Diameter is 72 mm and Overall Width is 12 mm, in the 719 thin section.
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