The 109-18 Series 3-step button gives these machine heads a distinctive look and sets them apart from other Rotomatics®. The housing provides a maximum bearing for worm, gear and string post. The 18:1 ratio provides for finer tuning and greater stability. The finer gears provide smoother tuning and a higher degree of backlash elimination. Countersunk tension screw permits player to regulate turning tension to any degree. Enclosed gear box with special lubricant for a lifetime of trouble-free service.
• Sealed-in, lubricated gears
• 14:1 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
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. 109-18N Nickel
No. 109-18C Chrome
No. 109-18G Gold
No. 109-18BC Black Chrome
