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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
Availability:
2 in stock
Single-row super-precision angular contact ball bearing, 30 mm bore x 47 mm OD x 9 mm wide, 25° contact angle, moulded polyamide cage, ABEC 7 / P4 tolerance, universally ground for light preload. Sold as one bearing — two clamp up into a preloaded spindle pair.
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$84.54
2 in stock
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| MFR / Brand | NSK |
|---|---|
| Model | 7906-A5-TYN-SUL-P4 / 71906ACD / 7906E |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 30 mm |
| OD | 47 mm |
| Width | 9 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7900 |
| Base Number | 7906 / 71906 |
| Industry Terms | super precision angular contact bearing, spindle bearing, ABEC 7 bearing, P4 bearing, universally ground, light preload, 25 degree contact angle, thin section spindle bearing |
| Common Misspellings | 7906A5TYN SULP4, 7906-A5TYNSULP4, 7906AS, NSK 7906 A5, 7906A5TYNSULP4J |
| Application Types | Machine tool spindles, grinding spindles, high-speed milling and boring heads, precision indexing |
| Bore Shaft Size | 30 mm |
| Mpn Variants | 7906A5TYNSULP4, 7906-A5-TYN-SUL-P4, 7906 A5 TYN SUL P4, 7906A5TYNSUL, 7906A5, 71906A5 |
| Manufacturer Status | NSK current production designation; NSK also absorbed RHP, so RHP 7906 numbers share this lineage |
| Compatible With Replaces | NSK 7906A5 spindle positions, 71906 ACD, RHP 7906E, 25° super-precision 30 mm bore spindle bearings |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.28 |
| Part Number | 7906A5TYNSULP4 |
| Cross Reference 1 | SKF 71906 ACD/P4A - SKF P4A class, 25 deg |
|---|---|
| Cross Reference 2 | FAG B71906-E-T-P4S - FAG P4S class, 25 deg |
| Cross Reference 3 | RHP 7906ETP4 - RHP P4, 25 deg |
| Cross Reference 4 | Fafnir 3MM9106WICR - Timken MM class, 25 deg |
| Cross Reference 5 | NSK 7906A5TYNDULP4 - factory matched pair, 25 deg |
| Cross Reference 6 | SKF 71906 CD/P4A - 15 deg, not 25 deg |
| Cross Reference 7 | NSK 7906A - 30 deg, not 25 deg |
| Cross Reference 8 | NSK 7906CTYNSULP4 - 15 deg, not 25 deg |
An NSK 7906A5TYNSULP4 super-precision angular contact ball bearing, 30 mm bore x 47 mm outside diameter x 9 mm wide, in the 71906 / 7906 thin-section spindle envelope. It carries radial load plus thrust in one direction. Machine-tool spindle bearing.
7906 — single-row angular contact ball bearing, 19-series thin section, 30 x 47 x 9 mm.
A5 — NSK contact-angle code for 25°. In NSK nomenclature C = 15°, A5 = 25°, A = 30°.
TYN — moulded polyamide cage.
SUL — single bearing, universally ground, light preload.
P4 — ISO tolerance class 4, equivalent to ABEC 7.
Bore Diameter: 30 mm. Outside Diameter: 47 mm. Overall Width: 9 mm. Contact Angle: 25°. Number Of Rows: 1. Cage Material: Polyamide. Cage Type: Moulded. Precision Class: ABEC 7 / P4. Preload: Light, universally ground. Closure Type: Open.
25° gives more thrust capacity and axial stiffness than a 15° bearing, with more speed capability and less heat than a 40° bearing.
Universal grinding: the faces are ground to a controlled offset, so any two bearings of this designation clamp face-to-face, back-to-back or in tandem to the same defined light preload without shimming. Light preload keeps heat and power draw down while removing axial play, which suits high-speed grinding and milling spindles.
The polyamide cage runs quiet and tolerates marginal lubrication; its temperature limit is lower than that of a phenolic or machined cage.
P4 / ABEC 7 controls bore, outside diameter, width and radial and axial runout.
Unit Quantity: 1 Pc. One universally ground single bearing; two clamp up into a defined light-preload pair. The factory duplex pair version is the DUL designation.
25° super-precision bearings in the 30 x 47 x 9 mm envelope: SKF 71906 ACD/P4A (SKF AC = 25°), RHP 7906ETP4 and 7906E (RHP E = 25°), FAG B71906-E-T-P4S (FAG E = 25°), Fafnir/Timken 3MM9106WICR (3MM = 25°). Same envelope at other angles: NSK 7906CTYNSULP4 and SKF 71906 CD/P4A at 15°, NSK 7906A at 30°, Fafnir 2MM9106WI at 15°. NSK also absorbed RHP, so RHP 7906 numbers are part of the same lineage.
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Rockwell’s own product page for the Kinetix 6000 is down
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
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