Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning stability, featuring an upgraded 1:18 gear ratio for smooth, velvety adjustment. All components are CNC-machined to exact tolerances and surface-finished, while high-grade brass string posts fit precisely into the housing to prevent wear.
Equipped with Schaller's innovative stepped flanged washer with a 0.39 in (10 mm) base diameter, this tuning machine reliably centers the string post via the hollow bolt without requiring a stepped headstock bore. This design eliminates tilting torque and relieves mechanical stress from both the post and the rear mounting screw.
With identical installation dimensions to its predecessor, the M6 135 is a direct drop-in replacement that requires no headstock modifications. All enclosed tuners are permanently lubricated with proprietary Schaller grease for complete, maintenance-free performance.
Brand
Schaller
Model
M6 135
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
Brass
Weight per Unit (Small/Large Button)
Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g)
Button Bore Hole
0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat
Mounting Screws Included
M2.2 x 9.5 mm (0.37 in)
Product Weight
0.13 lb