Schaller M6 90 Tuning Machines

The Schaller M6 90 tuning machines set the benchmark for closed guitar tuners, featuring an upgraded 1:18 gear ratio that ensures velvet-smooth and exceptionally precise tuning action. Every component is CNC-machined to tight tolerances, surface-finished for durability, and equipped with a self-locking drive mechanism for uncompromising tuning stability.
Crafted with premium brass string posts precision-fitted into the housing, these tuners eliminate play and wear over extended playing sessions. An innovative stepped flanged washer centers the string post securely through the threaded bushing, removing tilt torque and eliminating the need for stepped peghead holes.
Permanently lubricated with Schaller special grease for maintenance-free performance, the M6 90 retains identical mounting dimensions to its legacy predecessor, making it a seamless drop-in upgrade for acoustic and electric guitars.
Brand
Schaller
Model
M6 90
Series
M6 Series
Product Type
Guitar Tuning Machines
Gear Ratio
1:18
Post Material
Brass
Lubrication
Schaller Special Grease (Maintenance-Free)
Button Bore Hole
Diameter 0.17 in with 0.14 in drive flat
Weight per Single Tuner 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)
Product Weight
0.13 lb