Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers precise tuning and smooth operation with an improved 1:18 gear ratio. Engineered with high-precision CNC manufacturing and surface finishing, its self-locking drive ensures consistent and stable performance.
Equipped with solid brass posts fitted accurately into the housing, these tuners provide exceptional tuning stability and wear resistance. Closed-gear construction features lifetime lubrication with specialized grease, making them completely maintenance-free.
Featuring the innovative stepped M6 washer with a 0.39 in (10 mm) base diameter, the tuner centers the string post reliably without requiring a stepped peghead bore. It shares identical mounting dimensions with its predecessor model for direct, seamless replacement.
Brand
Schaller
Product Type
Guitar Tuning Machine
Series
M6 Series
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
Single Tuner Weight with Button (Small / Large)
Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g)
Product Weight
0.79 lb