Motor Starters vs. Contactors vs. Overload Relays: What Each One Does and Why You Need All Three
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Availability:
3 in stock
Super-precision angular contact ball bearing, 140 x 190 x 24 mm, 15° contact angle, open, light preload, P4A class, machined phenolic cage.
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| MFR / Brand | SKF |
|---|---|
| MPN | 71928CDP4ADGA |
| Model | 71928CD/P4A-DGA 7928 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 140 mm |
| OD | 190 mm |
| Width | 24 mm |
| Material | Chrome Steel |
|---|---|
| Series | 71900 |
| Condition | New |
| Preload | Light preload |
| Base Number | 71928 |
| Industry Terms | Spindle bearing, machine tool bearing, super precision angular contact, P4A spindle bearing |
| Application Types | Machine tool spindles, grinding spindles, high-speed precision rotating equipment |
| Bore Shaft Size | 140 mm |
| Mpn Variants | 71928CDP4ADGA, 71928 CD/P4A DGA, 71928CDGAP4A, 71928 CDGA/P4A, S71928 CDGA/P4A, 7928 |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.28 |
| Part Number | 71928 CDGA/P4A |
SKF 71928 CD/P4A DGA single-row super-precision angular contact ball bearing, also written 71928 CDGA/P4A. Series: 719, extra-light section. Bore: 140 mm. Outside diameter: 190 mm. Width: 24 mm. Contact Angle: 15°. Open on both faces. Country of origin: Italy. Short forms in trade use: 71928CDP4ADGA and 7928.
CD: high-capacity D design at a 15° contact angle. DGA: light preload on a universally matchable bearing. Precision Class: P4A, SKF’s super-precision class, equivalent to ABEC 7.
Dynamic Load Rating: 88.4 kN. Static Load Rating: 110 kN. The 719 extra-light section keeps a 190 mm outside diameter on a 140 mm bore, so a large-diameter spindle stays compact and light in rotating mass, and the 15° contact angle keeps the speed capability high while taking thrust in one direction. Limiting Speed: 8,500 rpm.
Universally matchable execution. Bearings of this designation combine back-to-back, face-to-face or in tandem without shims or grinding, and the preload of the finished arrangement follows from the DGA class.
Straight bore on a cylindrical shaft seat. Preloaded execution, so Internal Clearance reads N/A. Cage: machined, phenolic. Operating range: -40 °C to 120 °C.
Base number: 71928. NSK equivalent on the same envelope: 7928CTDULP4. SKF 71928 CDGB/P4A and 71928 CDGC/P4A carry medium and heavy preload, and 71928 ACDGA/P4A carries a 25° contact angle — each a related size on the same 140 x 190 x 24 mm envelope rather than a direct substitution.
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