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. Engineered as the modern evolution of the legendary original enclosed tuner introduced in 1966, it incorporates state-of-the-art manufacturing improvements while preserving classic aesthetics and identical replacement dimensions.
Each component is CNC-machined to exacting tolerances and surface-finished for smooth, velvet-like operation. The self-locking internal drive mechanism and precision brass string posts ensure rock-solid tuning stability, wear-free longevity, and permanent lubrication via high-grade internal grease that requires zero maintenance.
Featuring the innovative stepped M6 flanged washer with a 0.39-inch diameter base, this tuning machine reliably centers the string post through the banjo bolt without requiring stepped headstock drilling. This design absorbs mechanical pressure and eliminates tilt moment on both the string post and rear fixing screws.
Brand
Schaller
Model
M6 135
Product Type
Guitar Tuning Machine
Series
M6 Series
Gear Ratio
1:18
Post Material
Brass
Product Weight
0.79 lb
Weight per Single Tuner with Button (Small / Large)
Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt
Button Bore Hole
Diameter 0.17 in with driving surface 0.14 in
Mounting Screw Size
M2.2 x 0.37 in
Flanged Washer Diameter
0.39 in
Lubrication
Permanent Special Grease (Maintenance-Free)