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Gun Drill Bushings for De Hoff Gun Drilling Machines 
- Type GDH

These bushings are intended to be used with De Hoff gun-drilling machines. They are Similar to Slip/Fixed renewable bushings, but with the drill bearing at the bushings head end. All American type GDH bushings are heat treated to RC 62-64 and ground concentric with .0002 T.I.R. The head is undercut and ground square to the O.D. within .0002 T.I.R. These bushings are considered as special and not returnable. Prices available upon request.


Gun Drill Bushings for De Hoff Gun Drilling Machines 
- Type GDH








P/N A B C D F J R LOCK
SCREW
GDH-64-12 1/8 - 25/32
(.1250 - .7815)
3.20 - 19.50mm
1"
1.0000
.9998
3/4 35º 1-27/64 19/32 59/64 LS-2
GDH-64-16 1/8 - 25/32
(.1250 - .7815)
3.20 - 19.50mm
1"
1.0000
.9998
1 35º 1-27/64 19/32 59/64 LS-2
GDH-64-22 1/8 - 25/32
(.1250 - .7815)
3.20 - 19.50mm
1"
1.0000
.9998
1-3/8 35º 1-27/64 19/32 59/64 LS-2
GDH-88-16 1/8 - 1-1/16
(.1250 - 1.0625)
3.20 - 27.00mm
1-3/8
1.3750
1.3748
1 30º 1-51/64 25/32 1-7/64 LS-2
GDH-88-22 1/8 - 1-1/16
(.1250 - 1.0625)
3.20 - 27.00mm
1-3/8
1.3750
1.3748
1-3/8 30º 1-51/64 25/32 1-7/64 LS-2


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