Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an advanced 1:18 gear ratio. Designed to build on the legendary closed-housing design established in 1966, this model features high-precision CNC-machined components with a self-locking drive for smooth, consistent, and exceptionally stable operation.
Every string post is crafted from premium brass and seated precisely into the housing to maximize tuning stability and resist long-term wear. The sealed tuning mechanism is permanently lubricated with Schaller special grease, rendering it completely maintenance-free across its operational lifespan.
An innovative stepped M6 flanged washer with a 0.39-inch diameter base centers the string post via the banjo bolt, eliminating the need for a stepped hole in the headstock. This configuration reduces tilting torque, evenly distributing pressure away from both the post and the rear mounting screw while maintaining standard vintage-compatible installation dimensions.
Brand
Schaller
Model
M6 135
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
String Post Material
Brass
Flanged Washer Step Diameter
0.39 in
Button Bore Hole
0.17 in diameter with 0.14 in driving surface
Weight
0.13 lb