Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 Guitar Tuning Machine delivers exceptional tuning precision and stability with an improved 1:18 gear ratio. Designed as an evolution of the industry-standard closed machine head, it offers a smooth, delicate, and reliable tuning experience for acoustic and electric guitars.
Featuring high-precision CNC-machined components and solid brass string posts fitted directly into the housing, this machine head guarantees maximum wear resistance and backlash-free performance. Closed housings are permanently lubricated with Schaller special grease for completely maintenance-free operation.
The innovative stepped M6 flanged washer ensures straightforward installation and optimal axis centering without requiring a stepped headstock hole. Matching the original mounting dimensions, it serves as a direct drop-in replacement without instrument modifications.
Brand
Schaller
Model
M6 90
Gear Ratio
1:18
Post Material
Brass
Lubrication
Schaller Special Grease (Maintenance-Free)
Button Bore Hole
Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
Flanged Washer Diameter
0.39 in (10 mm) stepped base
Product Weight
0.79 lb