Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 guitar tuning machine sets an industry standard for closed-type tuners, delivering unmatched tuning accuracy and smooth operation. Engineered with a precise 1:18 gear ratio, it ensures fine, sensitive adjustments and exceptional tuning stability. High-grade brass posts fitted into CNC-machined housings guarantee long-lasting, wear-free performance.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation while eliminating tilting torque. The stepped design reliably centers the string post via the threaded bushing, removing the need for a stepped peghead bore and reducing strain on both the post and mounting screw. Every unit is permanently lubricated with Schaller special grease for completely maintenance-free functionality.
Built with identical mounting dimensions to its legendary predecessor, the M6 135 serves as a seamless, direct-replacement upgrade without requiring headstock modifications. Premium materials and self-locking drive mechanics work together to provide consistent, backlash-free performance for professional musicians and discerning builders alike.
Brand
Schaller
Series
M6 Series
Gear Ratio
1:18
Weight
0.79 lb
Post Material
Brass
Weight per Single Tuner 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 threaded bushing
Button Bore Hole
Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
Lubrication
Schaller special grease (maintenance-free)
Manufacturing
CNC-machined