Description
Gun-Drill Insert Bushing
Gun-Drill Bushings are used on gun-drilling machines, such as Eldorado, Drillmation, DeHoff, and Lahr. These bushings are similar to SF renewable bushings, except reversed, with the drill bearing at the bushing’s head end, which contacts the workpiece. This two-piece system offers maximum economy and flexibility. Only a few liner sizes are required to hold a wide range of replaceable inserts to fit specific gun-drill sizes. Inserts extend slightly beyond the liner head, to contact the workpiece.
Application Information
ID Tolerance
Standard ID Tolerance
From #52 to 1-1/32″ +0.0000/+0.0002
OD Tolerance
Standard OD Tolerance
1/2″ +0.0017/+0.0014
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) | B OD (Inch) | C Length (Inch) |
| 3/16-5/16, #12-O, 4.80-8.00mm | 1/2″ | 1/2″ |
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