Angular Contact Ball Bearing Spec Table
A ball bearing with a contact angle (15°–40°) that supports combined radial and unidirectional axial loads. Commonly used in pairs or sets for machine tool spindles and ball screw supports.
Practical Notes
- Single row supports one-direction thrust only. Use DB (back-to-back) or DF (face-to-face) for bidirectional thrust.
- 15° for high speed, 25° general purpose, 40° for heavy thrust. Select contact angle by application.
Selection Guide
Supports combined radial + axial loads at high speed. Used in CNC spindles, robot joints, precision machinery. Single row supports one-direction thrust; use DB (back-to-back), DF (face-to-face), or DT (tandem) for bidirectional. Contact angle (15°/25°/40°) determines axial load ratio.
KSISOJISDINABMAAngular Contact Ball Bearing
11 sizesThe dimensions below are identical across KS B 2023 · ISO 15 · JIS B 1522 · DIN 628 · ABMA Std 20.
| Nominal | d (Bore) | D (OD) | B (Width) | Cr | rpm |
|---|---|---|---|---|---|
| 7200 | 10 | 30 | 9 | 5070N | 28000 |
| 7201 | 12 | 32 | 10 | 6050N | 24000 |
| 7202 | 15 | 35 | 11 | 7610N | 22000 |
| 7203 | 17 | 40 | 12 | 9560N | 18000 |
| 7204 | 20 | 47 | 14 | 12700N | 16000 |
| 7205 | 25 | 52 | 15 | 14000N | 13000 |
| 7206 | 30 | 62 | 16 | 19500N | 11000 |
| 7207 | 35 | 72 | 17 | 25500N | 9000 |
| 7208 | 40 | 80 | 18 | 30700N | 8000 |
| 7209 | 45 | 85 | 19 | 33200N | 7500 |
| 7210 | 50 | 90 | 20 | 35800N | 7000 |
Key Features
- Contact angle (15°/25°/40°) adjusts axial load sharing ratio
- Single row supports one-direction thrust; DB/DF/DT combinations for bidirectional
- Series 7000–7300; available in high-speed/precision grades (ABEC 5/7/9)
Key Applications
CNC spindles, robot joint reducers, machine tool ball screw supports, pump high-speed shafts, aircraft accessory gears
FAQ
Difference between DB, DF, and DT arrangements?
DB (back-to-back) has high moment rigidity for machine spindles. DF (face-to-face) is compact but lower rigidity. DT (tandem) for heavy one-direction axial loads.