Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine represents high precision and legendary reliability with an enhanced 1:18 gear ratio for smooth, accurate tuning. CNC-machined components and high-grade brass posts ensure optimal tuning stability, wear resistance, and long-lasting performance.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post without requiring stepped headstock drill holes. This mechanism eliminates tilting torque and reduces strain on both the string post and rear mounting screws.
Permanently lubricated with Schaller special grease, the sealed housing provides completely maintenance-free operation. Designed to match standard legacy dimensions, it installs seamlessly as a direct replacement upgrade on compatible instruments.
Brand
Schaller
Series
M6 Series
Model
M6 90
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
Brass
Weight per Single Tuner with Button (Small / Large)
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 banjonut
Button Bore Hole
Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
Item Weight
0.79 lb