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HL
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FEATURES: Similar to an L bushing, but with a head to resist heavy axial loads. HL head liners are permanent 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. Note: the "length" listed for an HL bushing refers to its overall length, not its length under the head.
STANDARD SIZES: See Dimensions page for part numbers. The prices shown apply to standard bushings only, as listed in the table, either ground or unground OD.| | HL-32-16 | | Standard liner bushing | | | HL-32-16U | | Add "U" for Unground OD |
STANDARD LINER ID TOLERANCE:| | 3/16 to 3/8" | | | | +.0001/+.0004 | | | 7/16 to 5/8" | | | | +.0002/+.0005 | | | 3/4" | | | | +.0003/+.0006 | | | 7/8 to 1" | | | | +.0004/+.0007 | | | 1-3/8" | | | | +.0006/+.0010 | | | 1-3/4" | | | | +.0008/+.0012 | | | 2-1/4" | | | | +.0010/+.0015 |
MATERIAL: 1144 Stressproof steel, heat treated to achieve Rc 62-64 ID hardness. Other materials readily available by special order (see Specials). |
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