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Product Information
SF drill bushings are replaceable bushings generally used with a liner bushing and lock screw. 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 lock screw recess for fixed mounting; the other has a locking recess that allows the bushing to slip down, then rotate to lock in place. Quick-Ship Drill Bushings are popular bushing sizes that we do our best to keep in stock and ready for same-day shipment 100% of the time. These bushings include most common ID drill sizes. Complete part numbers for all quick-ship P bushings are listed in the tables below.
Technical Information
Click here for Standard Drill Sizes
Application Information
These replaceable bushings are generally used with a liner bushing and lock screw.
ID Tolerance
Standard ID Tolerance: From #80 to 1/4" +.0001/+.0004 Over 1/4 to 3/4" +.0001/+.0005 Over 3/4 to 1-1/2" +.0002/+.0006 Over 1-1/2 an up +.0003/+.0007Reamer ID Tolerance (Special): From #80 to 1/4" +.0005/+.0008 Over 1/4 to 3/4" +.0006/+.0010 Over 3/4 to 1-1/2" +.0008/+.0012Reamer bushings have a different ID-tolerance range than drill bushings. To special-order bushings with the reamer ID tolerance shown here, add "-REAMER" to the part number: SF-20-16-.1250-REAMER (Special)
OD Tolerance
Standard OD Tolerance: 3/16 to 1" 0/-.0002 1-3/8 to 1-3/4" 0/-.0003 2-1/4 to 3-1/2" 0/-.0004
No-Counterbore Option on Long Bushings*
Extremely long bushings with a small ID size (marked with an asterisk * in the tables below) 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: SF-20-16-.1250-NCB (Special)
Material
| MATERIAL | HEAT TREAT | FINISH | DFARS | RoHS |
| 1144 Stress proof Steel | heat-treated to achieve Rc 62-64 ID hardness | - | ✔ | ✔ |
Parts Specification
| Part Number | ID | OD | LENGTH | F DIA | G | H | J | L | M | R | LOCK SCREW |
| SF-20-16-.1285 | .1285 | 5/16 | 1 | 35/64 | 1/4 | 1/8 | 11/64 | 65 Degree | 5/8 | 1/2 | LS-1 RC-01 RK-01 RK-10 |
Warning:
This Product Can Expose You To Materials And/Or Chemicals Including Arsenic, Lead, And Other Materials And/Or Chemicals Which Are Known To The State Of California To Cause Cancer And/Or Reproductive Harm. For more information, visit www.P65Warnings.ca.gov