Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an upgraded 1:18 gear ratio. Continuing the legacy of the original closed-type tuner introduced in 1966, this modern iteration combines refined mechanical performance with long-lasting durability.
Precision CNC-machined components and high-grade brass string posts ensure velvet-smooth operation, exceptional tuning stability, and wear-free longevity. Each unit comes permanently lubricated with Schaller special grease for entirely maintenance-free reliability.
Equipped with an innovative stepped M6 flanged washer, the unit centers the string post securely through the hollow screw without requiring stepped headstock drilling. This design absorbs mechanical stress, eliminates tilting torque, and shares identical installation dimensions with previous models for straightforward drop-in replacement.
Brand
Schaller
Model
M6 135
Gear Ratio
1:18
Post Material
Brass
Button Borehole
Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
Mounting Screw Size
M2.2 x 9.5
Lubrication
Schaller Special Grease (Maintenance-Free)
Individual Weight (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)
Weight
0.79 lb