Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 sets a benchmark for closed guitar tuning machines, offering superior tuning comfort and precision. Engineered with a refined 1:18 gear ratio, this model delivers exceptionally smooth, accurate, and stable pitch adjustment for demanding musicians.
Every component is CNC-machined to exacting tolerances and surface-finished for friction-free movement. High-grade brass string posts fit securely into the housing, while lifetime lubrication with Schaller special grease guarantees maintenance-free performance and exceptional wear resistance.
Featuring the stepped M6 flanged washer, the system centers the string post securely without requiring stepped headstock holes. This innovative design eliminates tilting torque, taking mechanical stress off both the post and the rear mounting screw to maximize tuning stability.
Brand
Schaller
Product Type
Guitar Tuning Machine
Model
M6 90
Series
M6 Series
Gear Ratio
1:18
Post Material
Brass
Flanged Washer Diameter
0.39 in
Button Bore Hole
0.17 in diameter with 0.14 in drive flat
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
Mounting Screws Included
M2.2 x 9.5 mm