Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers uncompromised tuning accuracy and smooth handling with an upgraded 1:18 gear ratio. Designed with high-precision CNC-machined components and high-grade brass string posts, it ensures outstanding tuning stability, wear resistance, and sensitive adjustments.
Featuring the innovative stepped M6 flanged washer, this tuner simplifies installation on the headstock and eliminates tilting moments without requiring stepped peghead drilling. All closed tuners are permanently lubricated with Schaller special grease for completely maintenance-free operation.
Engineered with identical mounting dimensions to its classic predecessor, the M6 90 offers seamless drop-in replacement while providing versatile configuration options across standard, Locking, and TopLocking post designs.
Brand
Schaller
Series
M6 Series
Gear Ratio
1:18
Post Material
High-Grade Brass
Lubrication
Schaller Special Grease (Maintenance-Free)
Weight with Button per Unit (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 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)
Product Weight
0.79 lb