Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. Designed as the modern evolution of the legendary original closed tuner, it combines CNC-machined components with self-locking brass posts to ensure maximum tuning stability and wear resistance.
Featuring the innovative stepped flanged washer, this tuning machine reliably centers the string post without requiring stepped peghead drilling. This design eliminates tilting torque and reduces structural stress on both the tuner post and the rear mounting screw for enhanced longevity.
Permanently lubricated with Schaller special grease for maintenance-free operation, the M6 90 matches the identical installation dimensions of its predecessor for effortless, drop-in replacement across various guitar headstocks.
Brand
Schaller
Series
M6 Series
Model
M6 90
Gear Ratio
1:18
Post Material
Brass
Manufacturing
CNC-machined
Lubrication
Schaller Special Grease (Maintenance-Free)
Button Borehole Diameter
0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
Weight
0.13 lb