ROTO-GRIP LOCKING ROTOMATICS® (502 SERIES)

The Roto-Grip Locking Rotomatics® (502 Series) utilize the famous Rotomatic® design with a “thumb screw” mechanism which locks the string into place. With 18:1 gear ratio.

The 502 Series utilize the famous Rotomatic® design with a “thumb screw” mechanism which locks the string into place, allowing for quick string changes. To operate, insert the string through the post hole, wrap around once, then lock by tightening with the thumb screw.

  • Sealed-in, lubricated gears
  • 18:1 gear ratio
  • 25/64” post hole
  • Post length to hole: 23mm
  • Overall post length: 28.2mm
  • Weight per pc/per set: 1.6oz/9.6oz
  • Max. string gauge: .074”
  • Hardware included (bushings, washers, screws)
  • Drop-in replacement for:
    • 102-18 Series
    • 102V Series
    • 103 Series
    • 106 Series
    • 109 Series
    • 109-18 Series
    • 135 Series (Top mounting hole will be visible)
    • 136 Series (Top mounting hole will be visible)
    • 502 Series
    • 509 Series

Available in:
For standard guitars, 3 Treble and 3 Bass, Set of 6
No. 502N Nickel
No. 502C Chrome
No. 502G Gold
No. 502BC Black Chrome

W/ Keystone Buttons
For standard guitars, 3 Treble and 3 Bass, Set of 6
No. 502NK Nickel
No. 502CK Chrome
No. 502GK Gold
No. 502BCK Black Chrome

Schematic Drawing

502 Series

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