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. All components are CNC-machined to exacting tolerances and surface-finished, featuring self-locking drive mechanisms that ensure smooth, sensitive, and reliable operation across all configurations.
Equipped with high-grade brass posts precisely fitted into the enclosed housing, this tuner maximizes tuning stability and eliminates mechanical wear. The permanently lubricated internal mechanism uses Schaller special grease for completely maintenance-free performance throughout its lifespan.
Featuring the innovative stepped M6 flanged washer with a 0.39 in diameter base, the string post centers securely without requiring stepped headstock drilling. This direct-replacement design matches the original mounting footprint, eliminating tilting torque and reducing mechanical stress on mounting screws and headstock surfaces.
Brand
Schaller
Series
M6 Series
Model
M6 135
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
Brass
Weight
0.79 lb
Single Unit Weight with Button
Metal: 1.27 oz / 1.34 oz, Pearloid: 1.06 oz / 1.09 oz, Ebony: 1.06 oz / 1.09 oz (including threaded bushing)
Button Bore Diameter
0.17 in (0.14 in drive flat)
Flanged Washer Base Diameter
0.39 in
Mounting Screw Size
M2.2 x 0.37 in
Lubrication
Schaller Special Grease (Maintenance-Free)