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6210 deep groove ball bearing is part of CXJSD’s 6200 series, with a 50 mm bore, 90 mm outside diameter, and 20 mm width. According to CXJSD’s specifications, the 6210 has a minimum chamfer of 1.1 mm, a basic dynamic load rating of 35.0 kN, a basic static load rating of 23.2 kN, and uses 10 balls with a ball diameter of 12.7 mm. Its reference speed is 7,100 r/min with grease lubrication and 8,300 r/min with oil lubrication, with a listed weight of approximately 0.454 kg per piece. The 6210 is available within the 6200 series in open, ZZ, 2RZ, and 2RS configurations.
Bore, outside diameter and width follow the ISO 15:2017 metric series, so the 6210 is a direct interchange across brands. Values below apply to the standard steel-cage, chrome-steel (GCr15) execution.
| Parameter | Metric | Imperial |
|---|---|---|
| Bore diameter (d) | 50 mm | 1.9685 in |
| Outside diameter (D) | 90 mm | 3.5433 in |
| Width (B) | 20 mm | 0.7874 in |
| Basic dynamic load rating (C) | 35.0 kN | 7,868 lbf |
| Basic static load rating (C0) | 23.2 kN | 5,215 lbf |
| Limiting speed — open | 7,100 rpm | — |
| Limiting speed — ZZ / 2RS | 8,300 rpm | — |
| Weight | 0.454 kg | 1.001 lb |
The raceway groove is machined slightly larger than the ball radius, giving point contact between balls and ring. That geometry is what lets a single row of balls carry radial load and axial load in both directions at once.
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Presses onto the 50 mm shaft and forms the rotating raceway the balls run against.
Seats in the 90 mm housing bore as the stationary raceway, closing the race circuit.
Chrome-steel balls make point contact with both raceways, keeping rolling friction low even at speed.
Spaces the balls evenly around the raceway and stops them from touching each other during rotation.
Raceway exposed on both sides. Lowest running temperature and easiest to re-grease, but needs a clean operating environment.
Stamped steel shields keep out dust and coarse contaminants while retaining factory grease, with minimal added drag.
Contact rubber seals give the strongest protection against moisture and fine dust, suited to harsher duty cycles.
Standardized dimensions, a 35.0 kN dynamic rating and 7,100 rpm reference speed with grease make the 6210 a suitable choice wherever a 50 mm shaft needs to rotate under radial and axial load.
Motor and pump shaft support at moderate to high rpm
Wheel bearings carrying road and steering loads
Tractors, seeders and plows in dusty, continuous duty
Drills, grinders and lawnmowers needing high-speed spin-up
Washing machine drums and fan motors
Verified feedback from procurement teams and distributors who have ordered this part — shown as submitted, with supplier replies where given.
Dimensions matched the drawing exactly and the batch was consistent — no variance across the 2,000 pieces we received. Documentation was complete and arrived before the shipment.
Good communication throughout and the sample lead time was exactly as quoted. We will move to a production order once our engineering sign-off is complete.
Asked for a non-standard seal option and they confirmed feasibility within a day. Quality has been reliable across three orders so far.
Short clips covering what the 6210 is, where it fits, and why it's one of the most widely stocked bearing sizes.
Answers to the questions we hear most often from engineers and buyers evaluating the 6210 — sizing, load capacity and how it compares with different configurations.
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The standard 6210 deep groove ball bearing has a 50 mm bore, 90 mm outside diameter, and 20 mm width, making 50 × 90 × 20 mm the key dimensions to verify before ordering or replacing a bearing.
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Load ratings vary by manufacturer, but a typical 6210 specification is around 35 kN basic dynamic load rating and 23.2 kN basic static load rating; always check the exact manufacturer's catalog before using these values for equipment selection.
6210 normally identifies the basic open bearing, while 6210-2RS uses two rubber seals and 6210-ZZ uses two metal shields; the correct choice depends mainly on contamination protection, lubrication requirements, operating speed, and working environment.
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6210 C3 indicates greater-than-normal radial internal clearance, which can be useful where operating temperature, thermal expansion, or interference fits increase the normal bearing clearance; C3 should not be selected automatically for every application.
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Speed depends on the manufacturer, lubrication, bearing configuration, and operating conditions; for example, Koyo lists a 6210 reference limiting speed of 7,100 rpm with grease and 8,500 rpm with oil, so the exact manufacturer's data should be used for selection.
