Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 tuning machine delivers exceptional tuning precision and stability with its 1:18 gear ratio. CNC-machined components with a self-locking drive ensure ultra-smooth, delicate, and reliable operation. High-grade brass string posts are accurately fitted into the housing to guarantee wear-free performance and long-lasting tuning stability.
Featuring the innovative stepped M6 flanged washer, this tuning machine mounts securely while ensuring permanent axis centering through the banjoscrew. This stepped design eliminates tilting moments and relieves mechanical stress from both the post and rear mounting screw without requiring stepped headstock drilling.
Designed with identical mounting dimensions to its classic predecessor, the M6 90 enables direct retrofit replacement without instrument modifications. Each sealed unit is permanently lubricated with Schaller special grease for completely maintenance-free functionality.
Brand
Schaller
Model
M6 90
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Weight
0.8 lb
Button Hole Bore
0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat
Post Material
High-Grade Brass
Lubrication
Permanently lubricated with Schaller special grease
Mounting Compatibility
Direct replacement for previous M6 models