Main Bearing
WARNING: This page is about a different variant/trim than selected.
MAIN BEARING SPECIFICATIONS
| Unit: mm (in) | ||||||
|---|---|---|---|---|---|---|
| Grade number(1) | Thickness | Identification color (UPR/LWR) | Remarks | |||
| 0 | 1.973 - 1.976 (0.0777 - 0.0778) | Black | Grade and color are the same for upper and lower bearings. | |||
| 1 | 1.976 - 1.979 (0.0778 - 0.0779) | Brown | ||||
| 2 | 1.979 - 1.982 (0.0779 - 0.0780) | Green | ||||
| 3 | 1.982 - 1.985 (0.0780 - 0.0781) | Yellow | ||||
| 4 | 1.985 - 1.988 (0.0781 - 0.0783) | Blue | ||||
| 5 | 1.988 - 1.991 (0.0783 - 0.0784) | Pink | ||||
| 6 | 1.991 - 1.994 (0.0784 - 0.0785) | Purple | ||||
| 01 | UPR | 1.973 - 1.976 (0.0777 - 0.0778) | Black/Brown | Grade and color are different for upper and lower bearings. | ||
| LWR | 1.976 - 1.979 (0.0778 - 0.0779) | |||||
| 12 | UPR | 1.976 - 1.979 (0.0778 - 0.0779) | Brown/Green | |||
| LWR | 1.979 - 1.982 (0.0779 - 0.0780) | |||||
| 23 | UPR | 1.979 - 1.982 (0.0779 - 0.0780) | Green/Yellow | |||
| LWR | 1.982 - 1.985 (0.0780 - 0.0781) | |||||
| 34 | UPR | 1.982 - 1.985 (0.0780 - 0.0781) | Yellow/Blue | |||
| LWR | 1.985 - 1.988 (0.0781 - 0.0783) | |||||
| 45 | UPR | 1.985 - 1.988 (0.0781 - 0.0783) | Blue/Pink | |||
| LWR | 1.988 - 1.991 (0.0783 - 0.0784) | |||||
| 56 | UPR | 1.988 - 1.991 (0.0783 - 0.0784) | Pink/Purple | |||
| LWR | 1.991 - 1.994 (0.0784 - 0.0785) | |||||
| 67 | UPR | 1.991 - 1.994 (0.0784 - 0.0785) | Purple/White | |||
| LWR | 1.994 - 1.997 (0.0785 - 0.0786) | |||||
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Undersize
MAIN BEARING SPECIFICATIONS
| Unit: mm (in) | ||
|---|---|---|
| Size U.S. | Thickness | Main journal diameter |
| 0.25 (0.0098) | 2.106 - 2.114 (0.0829 - 0.0832) | Grind so that bearing clearance is the specified value. |
Bearing Clearance
BEARING CLEARANCE
| Unit: mm (in) | |||
| Main bearing oil clearance | Standard | No. 1, 3, and 5 | 0.012 - 0.022 (0.0005 - 0.0009) |
| No. 2 and 4 | 0.018 - 0.028 (0.0007 - 0.0011) | ||
| Limit | 0.1 (0.004) | ||