Komatsu BACK REST Size Chart (mm/inches) |
|---|
| Bearing number | PFT 1.1/4 TR |
| Size (mm) | 31.75x2.5x10 |
| Bore Diameter (mm) | 31,75 |
| Outer Diameter (mm) | 2,5 |
| Width (mm) | 10 |
| d | 31.75 mm |
| A1 | 2.5 mm |
| A2 | 10 mm |
| B | 42.9 mm |
| B4 | 6 mm |
| Da - min. | 77 mm |
| J | 100 mm |
| H | 122 mm |
| L | 94 mm |
| H | 11 mm |
| s1 | 25.4 mm |
| T | 27.9 mm |
| Basic dynamic load rating - C | 25.5 kN |
| Basic static load rating - C0 | 15.3 kN |
| Fatigue load limit - Pu | 0.655 kN |
| Limiting speed | 3200 r/min |
| Mass bearing unit | 0.72 kg |
| Thread - G2 - 5/16-24 UNF | 5/1624 UNF |
| Hexagonal key size for grub screw - H | 3.969 mm |
| Housing material | Pressed steel |
| Da min. | 77 mm |
| A1 | 2.5 mm |
| A2 | 10 mm |
| B4 | 6 mm |
| N | 11 mm |
| s1 | 25.4 mm |
| Basic dynamic load rating C | 25.5 kN |
| Basic static load rating C0 | 15.3 kN |
| Fatigue load limit Pu | 0.655 kN |
| Thread grub screw G2 | 5/16-24 UNF |
| Hexagonal key size for grub screw N | 3.969 mm |
| Recommended tightening torque for grub screw | 6.5 N·m |
| Recommended diameter for attachment bolts, mm G | 10 mm |
| Recommended diameter for attachment bolts, inch G | 0.375 in |