Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with an upgraded 1:18 gear ratio. Designed with CNC-machined components and surface-refined finishes, this enclosed tuner features a self-locking drive mechanism that ensures smooth, sensitive, and stable operation.
Crafted with premium brass string posts precision-fitted into the housing, the M6 90 maximizes tuning stability and resists wear over time. The innovative stepped M6 flanged washer reliably centers the string post without requiring stepped peghead drilling, eliminating tilting torque and reducing pressure on the rear mounting screw.
Permanently lubricated with specialized Schaller grease for entirely maintenance-free performance, the M6 90 retains the exact installation dimensions of its predecessor for a seamless drop-in replacement on compatible headstocks.
Brand
Schaller
Model
M6 90
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
Brass
Peghead Hole Diameter
0.39 in (10 mm)
Button Borehole
0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) flat driving surface
Single Tuner Weight (Small / Large Button)
Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz)
Weight
0.13 lb