Journal used for LFR track roller linear guidance, concentric, carbon steel, oxide black finish or zinc finish
| LFR | LFR50/5-4-2Z | LFR Track Roller |
| concentric(stationary) | Adjustability |
| d | 5 mm | Shaft diamter |
| G1 | M4 | Mounting thread |
| L3 | 9.5 mm | Total mounting width |
| L | 19.5 mm | Overall width |
| L2 | 16 mm | Shank width |
| DK | 10 mm | Bolt head diameter |
| W | 3 mm | Width across flats Bolt head |
| ≈m | 0.01 kg | Weight |
| No washer | Note |
| a | 9 mm | Diamemer bolt center to linear shaft center |
| b | 8 mm | Width bearing and washer |
| c | 4 mm | Width mounting surface to running groove center |
| h | 11.5 mm | Width total mounting |
