SKF 7021ACD/HCP4ATBTA super-precision angular contact ball bearing. Super-precision (ISO 492 P4A / P2A) single-row angular contact ball bearing for machine-tool spindles, high-speed pump rotors, precision index tables. Contact angle 15° (E / 7000C) or 25° (7000A / ACD). Standard cage TN9 (nylon) or T (fabric-reinforced phenolic) for the highest speed ratings. Universally-matched sets available for back-to-back, face-to-face or tandem pair mounting.
| Type | Super-precision angular contact ball bearing |
| Designation | SKF 7021ACD/HCP4ATBTA |
| Bore d | 105 mm |
| HS code | 8482.10 |
| Bore diameter | 105 mm |
| Outside diameter | 160 mm |
| Width | 78 mm |
| Contact angle | 25 ° |
| Basic dynamic load rating | 199 kN |
| Basic static load rating | 275 kN |
| Note | Refer to catalogue data or contact SKF for the attainable speeds |
| Contact type | Normal contact (two-point contact) |
| Number of rows | 3 |
| Ring type | One-piece inner and outer rings |
| Design | High-capacity D |
| Universal matching bearing | No |
| Matched arrangement | <>> |
| Number of bearings in matched set | 3 |
| Matched condition (axial clearance/ preload) | Extra light preload |
| Tolerance class | P4A |
| Material, bearing | Hybrid (ceramic balls) |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Indicative carbon footprint for new product | 14.4 kg CO2e |
| Product net weight | 3.9 kg |
| eClass code | 23-05-08-03 |
| UNSPSC code | 31171531 |
| Material | As declared by SKF designation suffix |
| Temperature range | Per SKF product data |
| Primary standard | SKF designation convention (see description for governing ISO / DIN) |
| MOQ | 1 |
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.