Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 tuning machine delivers exceptional tuning accuracy and velvety-smooth operation with its refined 1:18 gear ratio. All components are precision CNC-machined and surface-finished to ensure uniform, sensitive, and reliable performance with a self-locking drive mechanism.
Crafted with premium brass posts fitted precisely into the housing, this tuner guarantees maximum tuning stability and wear-free operation. The stepped M6 flanged washer centers the string post securely over the hollow screw, eliminating tilting torque and protecting the headstock without requiring stepped drilling.
Featuring permanent lubrication with specialized grease, these closed tuning machines remain entirely maintenance-free while maintaining standard vintage-compatible dimensions for seamless direct replacement.
Gear Ratio
1:18
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
Button Borehole
Diameter 0.17 in with 0.14 in drive flat
Product Weight
0.13 lb
Brand
Schaller
Product Type
Guitar Tuning Machine
Post Material
Brass