Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 sets the benchmark for closed tuning machines, combining a refined 1:18 gear ratio with precision-engineered components for velvet-smooth tuning and exceptional pitch stability. High-grade brass string posts are fitted precisely into CNC-machined housings to ensure long-lasting, wear-free performance across demanding playing conditions.
Equipped with the innovative Schaller stepped flanged washer, this tuning machine centers the post effortlessly via the banjo bolt and eliminates the need for stepped headstock drilling. This smart design removes tilting torque and relieves mechanical stress from both the string post and rear mounting screws for a secure, trouble-free installation.
Each closed machine head is permanently lubricated with Schaller special grease, rendering the internal drive completely maintenance-free. With identical mounting dimensions to its predecessor, the M6 90 offers seamless replacement and upgrade capabilities for contemporary headstocks.
Brand
Schaller
Product Line
M6 Series
Model
M6 90
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
High-Grade Brass
Manufacturing Process
Precision CNC-Machined
Lubrication
Permanently Lubricated with Schaller Special Grease
Button Bore Hole
Diameter 0.17 in with 0.14 in driving surface
Single Tuner Weight 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 (including banjo bolt)
Product Weight
0.79 lb