Description
Liner Bushings
Liners are permanently installed bushings used to hold renewable drill bushings. The liner’s ID has a precise sliding fit with the renewable bushing’s OD. The liner accurately locates the renewable bushing and protects the jig plate from wear and damage caused by frequent bushing replacement.
Application Information
Liners are permanent bushings used to hold renewable drill bushings.
ID Tolerance
Standard Liner ID Tolerance:
- 3/16 to 3/8″ +0.0001/+0.0004
- 7/16 to 5/8″ +0.0002/+0.0005
- 3/4″ +0.0003/+0.0006
- 7/8 to 1″ +0.0004/+0.0007
- 1-3/8″ +0.0006/+0.0010
- 1-3/4″ +0.0008/+0.0012
- 2-1/4″ and up +0.0010/+0.0015
OD Tolerance
Standard OD Tolerance:
- 5/16″ +0.0016/+0.0013
- 7/16 to 5/8″ +0.0017/+0.0014
- 3/4 to 1″ +0.0018/+0.0015
- 1-1/4″ +0.0020/+0.0017
- 1-3/8″ +0.0022/+0.0018
- 1-3/4″ +0.0023/+0.0019
- 2-1/4 to 2-3/4″ +0.0025/+0.0021
- 3 to 4″ +0.0028/+0.0023
Unground OD Tolerance:
- 5/32 to 13/64″ +0.010/+0.005
- 1/4 to 7/16″ +0.015/+0.010
- 1/2 to 2-1/4″ +0.020/+0.015
Material
| Material | Heat Treat | Finish | DFARS | RoHS |
| 1144 Stressproof Steel | Heat treated to achieve Rc 62-64 ID hardness | – |
Parts Specification
| ID (Inch) | OD (Inch) | Length (Inch) |
| 7/8″ | 1-1/4″ | 3/4″ |
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