Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine represents the pinnacle of precision tuning, building on the legendary closed-tuner design originally set in 1966. Engineered with a smooth 1:18 gear ratio, it ensures velvety-soft and accurate tuning for modern guitarists.
Each component is precision CNC-machined and surface-finished, featuring high-grade brass string posts engineered seamlessly into the housing. Self-locking drive mechanisms provide superior tuning stability, while lifetime internal lubrication with Schaller specialty grease ensures completely maintenance-free operation.
The innovative stepped M6 flanged washer simplifies headstock installation by securely centering the string post via the banjo bolt. This eliminates the need for stepped headstock drilling, reduces tilt torque, and relieves physical stress from both the post and mounting screws.
Brand
Schaller
Model
M6 90
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
Brass
Button Bore Hole
Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm)
Lubrication
Schaller specialty grease, permanently lubricated
Product Weight
0.13 lb