21312 Bearing
21312 spherical roller bearing: 60 × 130 × 31 mm, with detailed ratings, speed references, mounting data, and calculation factors.
21312 Bearing Overview
21312 is a 21300 series spherical roller bearing with 60 mm bore, 130 mm outside diameter, and 31 mm width. Match the complete suffix, bore, clearance, cage, lubrication features, and operating conditions before ordering.
Confirm the full model, suffix, clearance, bore type, application, and quantity before ordering or assessing a replacement.
21312 Reference Specifications
Use these values to identify the bearing and prepare a quotation. Final supplied values depend on the selected design, full suffix, internal clearance, and agreed product configuration.
Load, Speed, and Weight Reference
| Design reference | Dynamic C | Static C0 | Oil speed | Grease speed | Thermal reference | Mass |
|---|---|---|---|---|---|---|
| EJ | 225 kN | 219 kN | 5,100 rpm | 4,200 rpm | 6,660 rpm | 2 kg |
Mounting and Calculation Reference
| Design | r max. | Shaft da | Housing Da | e | Y1 | Y2 | Y0 | Cg |
|---|---|---|---|---|---|---|---|---|
| EJ | 2 mm | 80 mm | 116 mm | 0.23 | 2.91 | 4.33 | 2.84 | 0.054 |
Configuration and Use Notes
- Tapered-bore versions may use K after the bearing number. Availability and suffix conventions must be confirmed for the selected manufacturer.
- Oil, grease, and thermal reference speeds are design references, not universal application limits. Fit, clearance, load, temperature, lubrication, and surrounding components can reduce the permissible operating speed.
- Clearance classes and cage suffixes vary by manufacturer. Confirm the complete marking rather than selecting from the base model alone.
- Ratings, speeds, cage references, mounting data, and calculation factors are reference values for the listed design. Manufacturers and internal designs can differ even when boundary dimensions match. Confirm the selected brand, full suffix, clearance, and application before ordering.
What to Confirm Before Ordering
- Match the complete 21312 designation, including every suffix and bore marking.
- Confirm clearance, cage, lubrication features, shaft and housing fits, shoulders, fillets, speed, load, and temperature.
- Include the bearing position, current model or photo, quantity, destination, and required inspection or compliance files.
Common Applications
- Industrial fans
- Gear reducers
- Textile machinery
- Compact industrial equipment
Related Technical Pages
Request a 21300 Model Page Quote
Send the full specification, drawing, quantity, destination, and required documents. We will confirm the selected configuration, availability, and timing in the quotation.