Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers refined performance and tuning comfort with its precise 1:18 gear ratio. All components are CNC-machined, surface-finished, and fitted with a self-locking drive mechanism to provide smooth, stable, and wear-free tuning action.
Crafted with premium brass string posts precision-fitted into the housing, these enclosed tuning machines feature permanent lubrication with Schaller special grease for completely maintenance-free operation over their entire lifespan.
Equipped with an innovative stepped M6 flanged washer, this design centers the string post securely through the banjonut to eliminate tilt moment and headstock stress without requiring stepped peghead drilling.
Brand
Schaller
Model
M6 90
Gear Ratio
1:18
Housing Type
Enclosed
Post Material
Brass
Flanged Washer Diameter
0.39 in
Button Bore Hole
0.17 in diameter with 0.14 in drive flat
Weight
0.79 lb
Lubrication
Maintenance-free grease