Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Heavy-duty needle roller bearings / Inch series, caged, without inner ring | |
| Outside diameter | D | 31.75 mm |
| Basic dynamic load rating | C | 20.7 kN |
| Basic static load rating | C0 | 23.3 kN |
| Fatigue load limit | Pu | 3.65 kN |
| Limiting speed | nG | 16000 r/min |
| Mass | ≈m | 0.059 kg |
Manufacturer Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | KOYO | |
| Official Class Key | 090-030-020 |
Classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official Category Path | Needle roller bearings - Heavy-duty needle roller bearings - Inch series, caged, without inner ring | |
| Official Classification 1 | Needle roller bearings / Heavy-duty needle roller bearings / Inch series, caged, without inner ring |
Technical Data21 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Fw | 19.050 mm | |
| D | 31.750 D | |
| C(B) | 19.050 mm | |
| R(Min.) | 1.02 mm | |
| Used With Inner Ring No. | IR-081212 | |
| Basic Load Ratings : Cr | 20.7 kN | |
| Basic Load Ratings : C0R | 23.3 kN | |
| Fatigue Load Limit : Cu | 3.65 kN | |
| Limiting Speeds(Grease Lub.) | 16000 min-1 | |
| Limiting Speeds(Oil Lub.) | 25000 min-1 | |
| (Refer.)Mass | 0.059 kg | |
| Recommended Dimensions Clearance Fit : S(Max.) | 19.050 mm | |
| Recommended Dimensions Clearance Fit : S(Min.) | 19.037 mm | |
| Recommended Dimensions Clearance Fit : H(Max.) | 31.775 mm | |
| Recommended Dimensions Clearance Fit H(Min.) | 31.750 mm | |
| Recommended Dimensions Tight Transition Fit : S(Max.) | 19.030 mm | |
| Recommended Dimensions Tight Transition Fit : S(Min.) | 19.017 mm | |
| Recommended Dimensions Tight Transition Fit : H(Max.) | 31.742 mm | |
| Recommended Dimensions Tight Transition Fit : H(Min.) | 31.717 mm | |
| Shoulder Dia. : Da | 26.97 | |
| Mass(Refer.) | 0.059 kg |
