Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 sets a benchmark in guitar tuning precision and performance. Engineered with an upgraded 1:18 gear ratio, it provides exceptionally smooth, accurate, and stable tuning control. Each component is CNC-machined to exact tolerances, delivering durable and reliable operation across all playing conditions.
Crafted with premium high-grade brass posts, these enclosed tuners minimize mechanical wear and maximize string vibration transfer. The specialized internal lubrication ensures frictionless performance throughout its lifespan, eliminating the need for periodic maintenance.
Featuring the innovative stepped M6 flanged washer, this system centers the string post securely without requiring stepped peghead counterbores. This design eliminates tilting torque and alleviates lateral stress on both the post and rear mounting screws for a seamless upgrade.
Gear Ratio
1:18
Weight per Single Tuner with Button (Small/Large)
Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt
Button Bore Hole
Diameter 0.17 in with driving surface 0.14 in
Product Weight
0.79 lb
Post Material
Brass
Lubrication
Permanent Schaller Special Grease
Mounting Screw Size
M2, 0.08 x 0.37 in
Brand
Schaller
Series
M6 Series