Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 sets a benchmark for enclosed guitar tuning machines, offering an upgraded 1:18 gear ratio for exceptionally precise and smooth tuning. Building on the iconic M6 design, this model delivers unmatched tuning comfort and rock-solid pitch stability.
Precision CNC-machined brass string posts and high-grade internal components ensure long-lasting wear resistance and accurate mechanical response. The self-locking drive and factory-applied permanent lubrication guarantee dependable, maintenance-free operation across years of heavy playing.
Featuring the innovative stepped flanged washer, the M6 90 effortlessly centers the string post without requiring stepped headstock drilling. This smart design distributes mechanical pressure away from the string post and rear mounting screw, preventing tilting and preserving smooth operation.
Brand
Schaller
Model
M6 90
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Weight
0.13 lb
Single Unit Weight with Button (Small/Large)
Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt
Button Bore Hole
Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
Post Material
High-Grade Brass
Lubrication
Schaller Special Grease (Maintenance-Free)