Slip/Fixed Renewable Bushings (SF)

drill bushings are replaceable bushings generally used with a liner bushing and lockscrew. Use SF bushings when you expect to replace bushings during the tooling's lifetime, or to switch bushings to perform multi-step operations with the same tooling. SF bushings combine the benefits of older S-type slip-renewable and F-type fixed renewable bushings: one side of SF drill bushings feature a lockscrew recess for fixed mounting; the other has a locking recess that allows the bushing to slip down, then rotate to lock in place. S and F types are now obsolete, and combination SF drill bushings will be supplied at no extra charge.

Application Information

These replaceable bushings are generally used with a liner bushing and lockscrew.

ID Tolerance

From #80 to 1/4"          +0.0001/+0.0004

Over 1/4 to 3/4"            +0.0001/+0.0005

Over 3/4 to 1-1/2"         +0.0002/+0.0006

Over 1-1/2 and up     +0.0003/+0.0007

From #80 to 1/4"          +0.0005/+0.0008

Over 1/4 to 3/4"            +0.0006/+0.0010

Over 3/4 to 1-1/2"         +0.0008/+0.0012

OD Tolerance

3/16 to 1"              0/-0.0002

No-Counterbore Option on Long Bushings

Extremely long bushings with a small ID size are counterbored according to ANSI standards for proper drill-bearing length to eliminate binding and heat buildup. Add "-NCB" for applications that require these bushings without a counterbore.

Material

Parts Specification