Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine represents high precision and tuning comfort with its refined 1:18 gear ratio. All components are CNC-machined to exacting standards and surface-treated to deliver smooth, sensitive, and stable tuning through a self-locking drive mechanism.
Equipped with high-grade brass posts precision-fitted into the housing, this closed tuner ensures superior tuning stability and wear-free operation. Permanent internal lubrication with Schaller specialty grease guarantees completely maintenance-free performance throughout its lifespan.
Featuring the innovative stepped M6 flanged washer, it centers the string post securely without requiring stepped peghead drilling. It matches the original M6 mounting dimensions for seamless replacement and upgrades on standard guitar headstocks.
Brand
Schaller
Model
M6 90
Series
M6 Series
Gear Ratio
1:18
Weight per Single Tuner (Small/Large Button)
Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw
Button Bore Hole
0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat
Post Material
Brass
Lubrication
Schaller Special Grease (Maintenance-Free)
Product Weight
0.79 lb