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Deep Groove Ball Bearing 6921 / 61921 ZZ / 2Z 105x145x20 mm
Item number:
6921-ZZ
Item features:
Narrow, light and with very good spinning characteristics. The deep groove ball bearing 6921-ZZ / 2Z is narrow and can also be used with limited space. The low weight allows for very high speeds.
Technical ScribbleZoomable
Technical Data
| Inside Ø (mm): | 105 |
| Outside Ø (mm): | 145 |
| Width (mm): | 20 |
| Tolerance for inside-Ø (mm): | 0/-0,02 |
| Tolerance for outside-Ø (mm): | 0/-0,018 |
| Tolerance for width (mm): | 0/-0,2 |
| Bore: | cylindrical |
| Extended Inner Ring: | no |
| max. Operating Temperature: | +120°C |
| min. Operating Temperature: | -20°C |
| Tolerance Class: | ABEC 1 / P0 |
| Internal Clearance: | CN (Standard) |
| Seal: | ZZ |
| Ring Material: | Rolling Bearing Steel |
| Rolling Element Material: | Rolling Bearing Steel |
| Cage Material: | Sheet Steel |
| Sealing material: | Sheet Steel |
| Type of lubrication: | greased |
| Lifetime lubricated: | yes |
| Magnetic: | yes |
| Noise and vibration testing: | Class V |
| Norm: | DIN 625-1 |
| Item weight: | 1,00 kg |
Features
- thin section bearing with a thin cross section
- suitable for space-saving installation in radial and axial directions
- suitable for high speeds compared to deep groove ball bearings with a larger cross section
- extra light series with compact dimensions and low weight
- suitable for radial loads and light axial loads in both directions
- offers high running accuracy, quiet running and very high speeds
- seal: non-contact gap seal on both sides made of a profiled sheet steel disc (ZZ / 2Z) for higher speeds than with rubber seal
- good fixed bearing property, but can also be used as a floating bearing, each in both directions
- manufacturers of bearings, such as FAG, KOYO, NSK, SKF, SNR, etc. assign different suffixes for their characteristics, for better orientation take note of the comparison table of bearings (see further information)
Further Information
- What does radial and axial load capacity mean?
- Fit recommendations for mounting
- Info sheet ball bearing
- Information about ball bearing seals
- Internal clearance and operating clearance
- Comparison list of roller bearings
- Comparison of features of roller bearings
- How do I clean my bearings?
- How do I grease or oil my bearings?
- How do I remove a sealing washer or cover plate?