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Pull Stud

pull studs pull studs

Gem Pull studs are shot peened to relieve stress in the material, remove burrs, radius corners, and improve the finish of the knob. This process improves the durability, extends the life and reduces the likelihood of the pull stud cracking. Improper choice of a pull stud can cause damage to your machine spindle, the tool holder, and can cause a serious safety hazard.

Advantages of Pull studs

The advantages of Gem Pull Studs are:

  • Uses replaceable hardened steel inserts
  • Safety & easily installs/removes pull stud retention knobs
  • Fast - self aligning, non-slip design minimizes damage to pull studs
  • Increases tooling flexibility and reduces tooling inventory
  • Saves time and aggravation

Benefits of Pull studs

The benefits of Gem Pull Studs are:

  • Our pull studs are manufactured with the best steel that ensures minimum wear and guarantees a tough inner core that resists the normal wear and tear caused by a CNC machine
  • Most often, a retention knob is added at the tail of the taper, where it can be clamped by levers from the outside and drawn axially into the spindle nose
  • Great for run out accuracy, balance repeatability and machine tool draw bar consistency
  • Higher-quality retention knobs will resist wear and deformation better, and they will also locate more accurately on the toolholder's center line
  • Another common option is a threaded bolt built in as part of the spindle that can be activated to screw or unscrew the toolholder

Pull Studs
PART No. D1 D2 D3 D4 D5 L1 L2 L3 Ø
GEM/PS/30-P1 M12 12.5 16.5 7 11 43 23 18 45
GEM/PS/40-P2 M16 17 23 10 15 60 35 28 45
GEM/PS/40-P3 M16 17 23 10 15 60 35 28 0
GEM/PS/50-P4 M24 25.0 38.0 17.0 23 85 45 35 45
GEM/PS/50-P5 M24 25.0 38.0 17.0 23 85 45 35 0
GEM/PS/40-P6 M16 17.0 23.0 14.0 19 54 26 20 15
GEM/PS/45-P7 M20 21.0 30.0 17.0 23 65 30 23 15
GEM/PS/50-P8 M24 25.0 36.0 21.0 28 74 34 25 15
GEM/PS/40-P9 M16 17.0 22.0 12.95 18.95 44.5 16.4 4 45
GEM/PS/45P10 M20 21.0 30.0 16.3 24.05 56 20.95 54 45
GEM/PS/50-P11 M24 25.0 37.0 19.6 29.1 65.5 25.55 65 45

For ordering Pull Studs, contact us
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