Double Row Deep Groove Ball Bearing 4304 2RS 20x52x21 mm
Item number:
4304-2RS
Item features:
Double row design for higher load capacity. The double row deep groove ball bearing 4304-2RS has a considerably higher load capacity than comparable single row deep groove ball bearings, but is only slightly wider. Main dimensions according to DIN 625-3.
Technical ScribbleZoomable
Technical Data
Inside Ø (mm): | 20 |
Outside Ø (mm): | 52 |
Width (mm): | 21 |
Bore: | cylindrical |
Extended Inner Ring: | no |
Tolerance for inside-Ø (mm): | 0/-0,01 |
Tolerance for outside-Ø (mm): | 0/-0,013 |
Tolerance for width (mm): | 0/-0,12 |
Seal: | 2RS |
Seal Colour: | Black |
Sealing material: | NBR |
Noise and vibration testing: | Class V |
Cage Material: | Sheet Steel |
Internal Clearance: | CN (Standard) |
Lifetime lubricated: | yes |
Magnetic: | yes |
Norm: | DIN 625-3 |
Ring Material: | Rolling Bearing Steel |
Type of lubrication: | greased |
Tolerance Class: | ABEC 1 / P0 |
max. Operating Temperature: | +100°C (briefly up to +120°C) |
Rolling Element Material: | Rolling Bearing Steel |
min. Operating Temperature: | -20°C |
Item weight: | 0,23 kg |
Features
- double row design: significantly higher load capacity than comparable single row deep groove ball bearings; additionally, it can support tilting moments
- narrower than two comparable single row deep groove ball bearings side by side
- cage material: sheet steel, high load-bearing capacity and high strength; suitable for continuous high temperatures
- medium series with compact dimensions and average weight
- suitable for very high radial loads and light axial loads in both directions
- suitable for high running accuracy, quiet running and high speeds
- seal: contact lip seal on both sides made of rubber (2RS) for high sealing effect
- If you need this bearing in RS design with only one seal and one open side, you can simply remove one of the two seals: to the instructions
- 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?