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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
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SKF 71906-ACXGA/P4A super-precision angular contact ball bearing, 30 x 47 x 9 mm, 25 degree contact angle, P4A, universally matchable, extra light preload.
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| MFR / Brand | SKF |
|---|---|
| MPN | 71906-ACXGA/P4A |
| Model | 71906 ACX P4A DGA / 3MM 9306 WI CR DUL / B71906E / 7906A5 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 30 mm |
| OD | 47 mm |
| Width | 9 mm |
| Series | 71900 |
|---|---|
| Preload | Extra light |
| Material | Bearing steel |
| Unspsc | 31171531 |
| Base Number | 71906 |
| Industry Terms | Super precision spindle bearing, ABEC 7 angular contact, extra-light 719 series, high-capacity D design, universally matchable, extra light preload, P4A |
| Common Misspellings | 71906ACX P4A GA, 71906 ACXGA P4A, 71906AXCGA/P4A, SKF 71906ACX-GA |
| Bore Shaft Size | 30 mm |
| Mpn Variants | 71906 ACXGA/P4A, 71906ACXGA/P4A, 71906-ACXGA/P4A, 71906ACXP4ADGA, 71906 ACX P4A DGA, 71906-ACX-P4A-DGA, 7906, 7906A5, B71906E |
| Compatible With Replaces | Fafnir 3MM9306WI CR DUL; FAG B71906E.T.P4S.UL; NSK 7906A5TRSULP4 |
| Rolling Elements | Balls |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25° |
| Part Number | 71906 ACXGA/P4A |
| Cross Reference 1 | Fafnir 3MM9306WI CR DUL |
|---|---|
| Cross Reference 2 | FAG B71906E.T.P4S.UL |
| Cross Reference 3 | NSK 7906A5TRSULP4 |
| Cross Reference 4 | 71906 CDGA/P4A (related size, 15° contact angle) |
SKF 71906-ACXGA/P4A super-precision angular contact ball bearing, single row. Bore 30 mm, outside diameter 47 mm, width 9 mm. Series 719, extra-light. Contact angle 25°, tolerance class P4A, high-capacity D design, universally matchable at extra light preload. Open on both faces, one-piece inner and outer rings. Unit Quantity: 1 Pc.
71906 — 719 extra-light series, 30 mm bore.
AC — 25° contact angle. The carton cross-references agree: Fafnir 3MM9306WI (3MM is 25°), FAG B71906E (E on a B719 designation is 25°) and NSK 7906A5 (A5 is 25°).
GA — universally matchable, extra light preload class.
P4A — SKF super-precision tolerance class.
Bore Diameter: 30 mm.
Outside Diameter: 47 mm.
Width: 9 mm.
Contact Angle: 25°.
Precision Class: P4A.
Preload: Extra light.
Dynamic Load Rating: 6,760 N (1,520 lbf).
Item Weight: 0.049 kg (0.11 lb).
Rolling Elements: 20 balls of 4.762 mm.
Number Of Rows: 1.
Bore Type: Straight.
Closure Type: Open.
Material: Bearing steel.
Reference Grease Quantity: 0.63 cm³.
Series: 71900.
UNSPSC: 31171531.
Unit Quantity: 1 Pc.
Shaft abutment diameter da: 32 mm minimum.
Housing abutment diameters Da 45 mm and Db 45.6 mm maximum.
Fillet radii ra 0.3 mm and rb 0.2 mm maximum.
Chamfer dimensions r1 0.3 mm and r2 0.2 mm minimum.
Inner ring shoulder diameter: 35.6 mm. Outer ring shoulder diameter: 41.4 mm.
Oil nozzle position dn: 36.8 mm.
Universal matching: the faces are ground so bearings from the range mount back-to-back, face-to-face or in tandem.
25° equivalents: Fafnir 3MM9306WI CR DUL, FAG B71906E.T.P4S.UL, NSK 7906A5TRSULP4. Related size: 71906 CDGA/P4A shares the 30 x 47 x 9 mm envelope at a 15° contact angle, with a basic dynamic rating of 7.15 kN and a static rating of 4.55 kN. Searchable forms: 71906-ACXGA/P4A, 71906ACXGA/P4A, 71906 ACX P4A DGA, 71906ACXP4ADGA, 7906, 7906A5.
25°.
30 mm bore, 47 mm outside diameter, 9 mm width.
Universally matchable at extra light preload.
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