Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine features a refined 1:18 gear ratio that ensures velvet-smooth tuning and exceptional precision. Precision CNC-machined components and a self-locking drive mechanism deliver ultra-stable, sensitive, and long-lasting tuning performance.
Equipped with high-grade brass posts fitted accurately into the housing, this tuning machine provides maximum tuning stability and wear-free operation. The stepped M6 flanged washer centers the string post reliably via the threaded bushing, eliminating tilting torque and protecting the mounting screw without requiring a stepped headstock bore.
Permanently lubricated with Schaller special grease for maintenance-free reliability, the M6 90 shares identical installation dimensions with its predecessor model for direct, seamless replacement on your instrument.
Brand
Schaller
Model
M6 90
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
High-Grade Brass
Lubrication
Schaller Special Grease (Maintenance-Free)
Button Bore Hole Diameter
0.17 in (4.2 mm) with 0.14 in (3.6 mm) flat
Weight per Individual Tuner with Button
Metal: 1.27 oz / 1.34 oz (36 g / 38 g), Perloid: 1.06 oz / 1.09 oz (30 g / 31 g), Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) including threaded bushing
Total Weight
0.79 lb