Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 represents the evolution of the legendary original closed-gear tuning machine, designed for superior performance and precision. Built with a refined 1:18 gear ratio, it delivers velvety smooth action, unmatched accuracy, and dependable tuning stability for discerning guitarists.
Crafted with precision CNC machining and premium brass string posts, these sealed machine heads feature a self-locking drive and permanent lubrication with Schaller special grease for completely maintenance-free operation. The stepped M6 flanged washer centers the post securely through the threaded bushing, eliminating tilt and removing stress from both the post and mounting screws.
Maintaining identical installation dimensions to its predecessor model, the M6 135 allows direct drop-in replacement without headstock modifications. Each unit is engineered for long-lasting reliability and exceptional wear resistance across demanding musical applications.
Brand
Schaller
Product Type
Guitar Tuning Machine
Series
M6 Series
Gear Ratio
1:18
Post Material
Brass
Lubrication
Schaller Special Grease (Maintenance-Free)
Flanged Washer Diameter
0.39 in
Button Bore Hole Diameter
0.17 in with 0.14 in drive flat
Mounting Screw Size
M2.2 x 0.37 in
Weight per Single Unit (Small/Large Button)
Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz)
Product Weight
0.79 lb