Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 guitar tuning machine offers precision engineering with an advanced 1:18 gear ratio, delivering ultra-smooth tuning and exceptional pitch stability. Built on the heritage of the original 1966 closed-housing design, this refined version incorporates modern manufacturing enhancements while maintaining classic aesthetic appeal.
Every component is CNC-machined to precise tolerances, featuring brass string posts fitted directly into the housing to eliminate mechanical play and prevent wear. The enclosed mechanism comes permanently lubricated with Schaller special grease, ensuring maintenance-free operation across years of reliable performance.
Installation is simplified through the innovative stepped M6 flanged washer, which centers the post via the banjonut and removes tilting torque without requiring a stepped peghead hole. With identical mounting dimensions to its legacy predecessor, it provides a direct, modification-free upgrade for standard instruments.
Brand
Schaller
Model
M6 135
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
Brass
Housing Type
Closed / Sealed
Lubrication
Permanently lubricated with Schaller special grease
Button Borehole
Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm)
Weight per Single Tuner with Button (Small / Large)
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) including banjonut
Weight
0.13 lb