Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 guitar tuning machine sets an industry benchmark for closed tuners, featuring an upgraded 1:18 gear ratio that provides precise and velvety-smooth tuning operation. Each component is CNC-machined to high tolerances, surface-finished, and fitted with high-grade brass string posts engineered for maximum tuning stability and long-term wear resistance.
Equipped with an innovative stepped M6 flanged washer, this tuning machine reliably centers the string post via the banjo bolt without requiring a stepped peghead bore. This design eliminates tipping torque and relieves direct mechanical stress from both the post and the rear mounting screw. Sealed housings come permanently lubricated with Schaller special grease for maintenance-free reliability.
Featuring the exact installation dimensions of its predecessor, the M6 135 allows direct replacement and upgrades on standard guitar headstocks without modifications. Precision-engineered for professional performance, it delivers dependable string tension and superior tuning accuracy.
Gear Ratio
1:18
Single Tuner Weight 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
0.17 in diameter with 0.14 in drive flat
Mounting Screw Size
M2.2 x 0.37 in
Flanged Washer Diameter
0.39 in
Post Material
Brass
Lubrication
Permanently lubricated with Schaller special grease
Brand
Schaller
Model Number
1002
Product Weight
0.13 lb