nsk 6217zz, 6218zz, 6219zz are deep groove ball bearings with double metal shields (ZZ), designed for high-speed operations and moderate radial/axial loads. Key parameters.
| Model | Inner Diameter (mm) | Outer Diameter (mm) | Width (mm) | Dynamic Load (kN) | Static Load (kN) | Max Speed (rpm) |
|---|---|---|---|---|---|---|
| 6217zz | 85 | 150 | 28 | 83.5 | 53.0 | 6,000 |
| 6218zz | 90 | 160 | 30 | 95.5 | 64.0 | 5,600 |
| 6219zz | 95 | 170 | 32 | 108 | 73.5 | 5,300 |
Key Differences. Larger models (e.g., 6219zz) handle higher loads but at slightly lower speeds. Shield design prevents contamination without affecting speed.
These bearings are widely used in.
6218zz bearings are installed in 5.5kW induction motors to support 4,800 rpm operations. benefits include 20% lower heat generation vs. Benefits include 20% lower heat generation vs. competitors.
6219zz bearings in mining conveyors reduce downtime by 35% due to dust resistance and 108kN dynamic load capacity.
Problem. Frequent bearing failures in 10kW motors due to overheating.
Solution. Switched to NSK 6217zz bearings with grease lubrication.
Result. Motor lifespan increased from 6 to 15 months; ROI achieved in 4 months.
Problem. Contamination in food processing pumps caused 3-hour daily downtime.
Solution. Installed 6218zz bearings with enhanced sealing.
Result. Downtime reduced by 80%; annual savings: €46,000.
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