305272 DB
Precision ball bearing > Double row angular contact ball bearing
305272 DB - Precision ball bearing - Double row angular contact ball bearing
| Product model | 305272 DB |
|---|---|
| d | 220 mm |
| D | 309.5 mm |
| B | 76 mm |
| Limiting speed | 2000 r/min |
| Reference speed | 2000 r/min |
| 组合式内圈的肩部直径(d1) | ≈252.5mm |
| 外圈肩部直径(D1) | ≈286mm |
| 外圈润滑槽宽度(b) | 13.9mm |
| 润滑孔直径（外圈）(K) | 7.5mm |
| 组合式内圈的倒角尺寸(r1,2) | min.2.1mm |
| Distance from load point (a) | 204mm |
| da | min.225mm |
| Da | max.284mm |
| ra | max.2.1mm |
| Pu | 13.4kN |
| kr | 0.095 |
| Calculation coefficient (e) | 0.86 |
| Calculation coefficient (X) | 0.62 |
| Y0 | 0.63 |
| Y1 | 0.73 |
| Y2 | 1.17 |
| Mass bearing | 17.7kg |
Product Details
The 305272 DB is part of the Double row angular contact ball bearing series within our Precision ball bearing range. It is engineered for high-performance industrial use and delivers reliable operation under demanding working conditions.
Typical applications include: electric motors, pumps, gearboxes, agricultural machinery and automotive systems. For detailed dimensions and load ratings, please refer to the specification table above. Contact FIJ for bulk pricing, technical support or customized solutions.
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305272 DB / Double row angular contact ball bearing / Precision ball bearing