Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers state-of-the-art precision and tuning comfort with an advanced 1:18 gear ratio. CNC-machined components and premium surface treatments ensure an ultra-smooth, stable, and wear-free tuning experience.
Equipped with high-grade brass posts precisely fitted to the housing, each unit features permanent lubrication with Schaller special grease for entirely maintenance-free operation. The self-locking drive design guarantees lasting tuning stability even through aggressive playing.
Installation is streamlined via the innovative stepped M6 flanged washer with a 0.39-inch diameter base, perfectly centering the string post without requiring stepped headstock holes. Sharing identical mounting dimensions with its predecessor, it offers a seamless drop-in upgrade for acoustic and electric guitars.
Brand
Schaller
Product Type
Guitar Tuning Machine
Series
M6 Series
Model
M6 90
Gear Ratio
1:18
Post Material
Brass
Flanged Washer Diameter
0.39 in
Button Bore Hole
Diameter 0.17 in with 0.14 in driving surface
Weight per Single Tuner (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
Lubrication
Schaller Special Grease (Maintenance-Free)