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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:
1 in stock
Super-precision angular contact ball bearing, 105 x 160 x 26 mm, 25 degree contact angle, extra light preload, machined phenolic cage, ABEC 7 with ABEC 9 accuracy.
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$433.64
1 in stock
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| MFR / Brand | SKF |
|---|---|
| MPN | 7021-ACDGA/P4A |
| Model | 7021 ACD P4A DGA / 3MM9121WI CR SUL 7021A5 7021-E 7021A |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 105 mm |
| OD | 160 mm |
| Width | 26 mm |
| Material | Bearing steel |
|---|---|
| Preload | Extra light |
| Lubricant | Oil/Grease |
| Series | 70 (ISO 70, extra light section) |
| Base Number | 7021 |
| Industry Terms | spindle bearing, super precision bearing, machine tool bearing, ABEC 7 angular contact |
| Bore Shaft Size | 105 mm |
| Mpn Variants | 7021 ACDGA/P4A, 7021ACDGA/P4A, 7021-ACDGA-P4A, 7021-ACD-P4A-DGA, 7021ACDGAP4A, 7021E, 7021A |
| Rolling Elements | Steel balls |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Part Number | 7021 ACDGA/P4A |
| Cross Reference 1 | FAG B7021-E-T-P4S-UL – light preload |
|---|---|
| Cross Reference 2 | NSK 7021A5TYNSULP4 – light preload |
| Cross Reference 3 | Fafnir 3MM9121WI CR SUL – light preload |
| Cross Reference 4 | SKF 7021 CDGA/P4A – 15° vs 25° |
SKF 7021-ACDGA/P4A single-row super-precision angular contact ball bearing. Series: 70, extra light section. Bore: 105 mm. Outside Diameter: 160 mm. Width: 26 mm. Open on both faces, machined fabric-reinforced phenolic resin cage, steel balls on steel raceways. Searchable forms of the designation: 7021 ACDGA/P4A, 7021ACDGA/P4A, 7021-ACD-P4A-DGA, 7021ACDGAP4A.
Contact Angle: 25°. Precision Class: P4A — ABEC 7 dimensional tolerance with running accuracy held to ABEC 9. Preload: extra light. Cage: machined phenolic resin, rated for continuous service to 120°C.
A 25° contact angle carries more thrust and less speed than a 15° bearing of the same envelope, which suits spindles that see combined radial and axial load. Dynamic Load Rating: 90.4 kN. Static Load Rating: 93.0 kN. Fatigue Load Rating: 3.4 kN. Limiting speed: 7 500 r/min on grease, 12 000 r/min on oil. Extra light preload holds shaft position and running accuracy while keeping heat generation low.
One bearing. Unit Quantity: 1 Pc. Open bearing, no seals or shields, lubricated on installation with oil or grease.
The phenolic cage sets the temperature ceiling at 120°C. Oil lubrication is required to reach the higher limiting speed. Preloaded bearings run without internal clearance, so shaft and housing fits are held to super-precision tolerances.
Closest crosses: FAG B7021-E-T-P4S-UL, NSK 7021A5TYNSULP4 and Fafnir 3MM9121WI CR SUL — same 25° contact angle, but light preload rather than extra light. SKF 7021 CDGA/P4A is the 15° contact angle version.
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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.
Our team can locate, cross-reference, and source all parts.
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