| Outside diameter | D | 52 | mm |
| Fatigue load limit, radial | Cur | 3,850 | |
| Basic dynamic load rating, radial | Cr | 16,700 | |
| Fit diameter of roller stud / stud | d1 | 20 | mm |
| Speed on permanent grease lubrication | nD G | 2,400 | |
| Basic static load rating, radial | C0r | 29,500 | |
| Width of the roller stud | B | 66 | mm |
| Width of flats | W | 10 | mm |
| Thread | M20X1,5 | ||
| Stop diameter of thrust washer | d2 | 36.50 | mm |
| Protrusion outer ring to thrust washer | C1 | 0.80 | mm |
| Distance to lubrication hole | Ca | 9 | mm |
| Maximum witdh of thrust washer | B1 | 25.60 | mm |
| Thread length | IG | 21 | mm |
| Diameter lubrication hole | ds | 4 | mm |
| Minimum chamfer dimension | rmin | 1 | mm |
| Width, outer ring | C | 24 | mm |
| Bolt/stud length effectively | B2 | 40.50 | mm |
| Manufacturer | Part Number |
|---|---|
| NSK | FCJSB-52R |
| Koyo | KM20-1UURM |
| NTN | KR52LL (NTN) |
| IKO | CF20-BUUR (IKO) |
| IKO | CF20-UUR (IKO) |
| Jalman Precision | CF20UUR |
| NSK | FCJS-52R |
| NTN | KR52LLH/2AS |
| SKF | KR52-PP (SKF) |
| McGill Manufacturing | MCFR-52-S |
| SKF | KR52-PPA (SKF) |
