Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. All components are CNC-machined to exact tolerances and surface-finished, featuring a self-locking drive mechanism that ensures consistent, responsive, and stable tuning.
Equipped with solid brass string posts that are precisely fitted into the housing, this enclosed machine head maximizes tuning stability and eliminates wear. The innovative stepped M6 flanged washer centers the string post securely through the banjonut, preventing tilting without requiring a stepped headstock bore.
Featuring the identical mounting dimensions as its predecessor, the M6 90 is designed for direct replacement and hassle-free installation. Permanent lubrication with specialized grease ensures completely maintenance-free operation over a long service life.
Brand
Schaller
Series
M6 Series
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
High-Grade Brass
Button Bore Diameter
0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
Weight per Single Tuner
Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid/Ebony: 1.06 oz / 1.09 oz (30 g / 31 g)
Product Weight
0.79 lb
Lubrication
Permanently lubricated with Schaller special grease