Cam follower (stud-type track roller), with axial guidance, with cage, crowned OD, hex socket, KR12T2H/3AS;CF4R-A;FCJB-12R
| D | 12 mm | Outside diameter |
| d | 4 mm | Stud diameter |
| B | 20 mm | Overall width |
| C | 8 mm | Outer ring width |
| B1 | 11 mm | Length shank on stud |
| C1 | 0.5 mm | Distance face outer ring to face thrust washer |
| d1 | 8.5 mm | Outside diameter flange ring |
| G | M4 x 0.7 | Thread stud |
| G1 | 6 mm | Thread length |
| M | 2.5 mm | Seat diameter for lubrication accessories |
| SW | 3.5 mm | Width across flats |
| r min | 0.15 mm | Chamfer dimension outer ring |
| C | 2.17 kN | Basic dynamic load rating |
| C0 | 1.69 kN | Basic static load rating |
| Fr | 1.86 kN | Maximum dynamic radial load |
| F0r | 0.725 kN | Maximum static radial load |
| nD G | 25000 r/min | Limiting speed |
| ≈m | 0.008 kg | Weight |
| Crowned | Outer ring profile | |
| Cage | Roller guide | |
| Centric | Stud type | |
| Gap type | Sealing type | |
| 52100 | 100Cr6 | Outer ring material | |
| 52100 | 100Cr6 | Roller material | |
| 20CrMo (ASTM4118, SCM420) | Stud material | |
| 52100 | 100Cr6 | Axial guidance | |
| Lithium Soap Grease NLGI #2 | Grease |
| Hex | Mouting hole | |
| M4 x 0.7 | Hexagonal nut | |
| 1 Nm | Recommended tightening torque |
| -30ºC to + 120ºC | Temperature range °C | |
| -22ºF to + 250ºF | Temperature range °F |
| THK | NTN | NSK |
| CF4R-A | KR12T2H/3AS | FCJB-12R |
