Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 tuning machine delivers exceptional tuning precision and stability with its refined 1:18 gear ratio. Designed with CNC-machined components and high-grade brass posts, this enclosed system ensures velvet-smooth operation, reliable self-locking performance, and long-lasting wear resistance.
Featuring the innovative stepped M6 flanged washer, this tuner allows straightforward installation and dependable axis centering without requiring stepped peghead holes. This smart design eliminates tilting moments and relieves mechanical stress from both the post and the rear mounting screws.
Each unit comes permanently lubricated with Schaller special grease for completely maintenance-free functionality over its entire lifespan. Identical in mounting dimensions to preceding models, it serves as a seamless replacement upgrade for modern and vintage instruments alike.
Brand
Schaller
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
High-Grade Brass
Weight per Single Tuner with Button (Small / Large)
Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw
Button Bore Hole
0.17 in diameter with 0.14 in driving surface
Flanged Washer Diameter
0.39 in
Lubrication
Schaller Special Grease (Maintenance-Free)
Product Weight
0.79 lb