Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with its refined 1:18 gear ratio. Continuing the legacy of the original 1966 design that set the global benchmark for sealed tuners, this model features high-precision CNC-machined components and durable surface finishing.
Equipped with high-grade brass posts precisely fitted into the housing, the M6 90 guarantees maximum tuning stability and wear-free operation. The innovative stepped flanged washer centers the string post securely through the banjo bolt, eliminating tilting friction and removing excess pressure from both the post and the rear mounting screw.
Permanently lubricated with Schaller special grease for maintenance-free performance, this tuning machine retains identical mounting dimensions to its predecessor for direct, seamless replacement on your headstock.
Gear Ratio
1:18
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 banjo bolt
Button Bore Hole
0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat
Post Material
High-Grade Brass
Housing Construction
Sealed CNC-Machined
Lubrication
Schaller Special Grease (Maintenance-Free)
Weight
0.13 lb