Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 Guitar Tuning Machine features a 1:18 gear ratio that delivers precise and smooth tuning performance. Precision CNC-machined components and surface finishes work alongside a self-locking drive to provide consistent tuning stability.
High-grade brass posts are fitted precisely into the housing to eliminate wear and ensure durable operation. The innovative stepped M6 flanged washer centers the string post securely via the banjonut, eliminating tilting torque and removing pressure from both the post and rear mounting screw without requiring stepped peghead holes.
Permanently lubricated with Schaller special grease for maintenance-free operation, the M6 90 shares identical installation dimensions with predecessor models for direct, modification-free replacement.
Brand
Schaller
Model
M6 90
Gear Ratio
1:18
Post Material
Brass
Button Bore Hole
Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
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
Product Weight
0.79 lb