Carr Lane H-40-12-.3858 | 5/8″ OD x 3/4″ Length Head Press-Fit Bushing

Description

Head Press-Fit Bushings (H)

H Bushings are similar to P bushings, but with a head to resist heavy axial loads. Type H bushings are permanently pressed into the jig plate. H bushings are generally used for single-operation drilling or reaming, when you do not expect to replace bushings during the tooling’s lifetime. The head of type H bushings can be left exposed, or recessed by counterboring the installation hole.

Application Information

H bushings are permanently pressed into the jig plate. The head can be left exposed, or recessed by counterboring the installation hole.

ID Tolerance

Standard 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

Reamer ID Tolerance (Special):

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

Standard OD Tolerance:

7/16 to 5/8″ +0.0017/+0.0014

Unground OD Tolerance:

1/2 to 2-1/4″ +0.020/+0.015

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

Material	Heat Treat	Finish	DFARS	RoHS
1144 Stressproof Steel	heat treated to achieve Rc 62-64 ID hardness	–	Yes	Yes

Parts Specification

Standard Drill Sizes (mm)	OD (Inch)	Length (Inch)	F Diameter (Inch)	G (Inch)
5/16-7/16, O-Z, 7.90-11.00mm	5/8″	3/4″	51/64″	7/32″