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 | 38.1 mm |
| Basic dynamic load rating | C | 25.3 kN |
| Basic static load rating | C0 | 32.5 kN |
| Fatigue load limit | Pu | 5.1 kN |
| Limiting speed | nG | 12000 r/min |
| Mass | ≈m | 0.073 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 | 25.400 mm | |
| D | 38.100 D | |
| C(B) | 19.050 mm | |
| R(Min.) | 1.02 mm | |
| Used With Inner Ring No. | IR-121612 | |
| Basic Load Ratings : Cr | 25.3 kN | |
| Basic Load Ratings : C0R | 32.5 kN | |
| Fatigue Load Limit : Cu | 5.10 kN | |
| Limiting Speeds(Grease Lub.) | 12000 min-1 | |
| Limiting Speeds(Oil Lub.) | 18000 min-1 | |
| (Refer.)Mass | 0.073 kg | |
| Recommended Dimensions Clearance Fit : S(Max.) | 25.400 mm | |
| Recommended Dimensions Clearance Fit : S(Min.) | 25.387 mm | |
| Recommended Dimensions Clearance Fit : H(Max.) | 38.125 mm | |
| Recommended Dimensions Clearance Fit H(Min.) | 38.100 mm | |
| Recommended Dimensions Tight Transition Fit : S(Max.) | 25.380 mm | |
| Recommended Dimensions Tight Transition Fit : S(Min.) | 25.367 mm | |
| Recommended Dimensions Tight Transition Fit : H(Max.) | 38.092 mm | |
| Recommended Dimensions Tight Transition Fit : H(Min.) | 38.067 mm | |
| Shoulder Dia. : Da | 33.32 | |
| Mass(Refer.) | 0.073 kg |
