Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 guitar tuning machine sets a benchmark for closed-type tuners, delivering velvety smooth operation and unyielding tuning stability. Engineered with a refined 1:18 gear ratio, this model ensures precise, micro-adjustable tuning response across all playing conditions. High-precision CNC machining and high-grade brass string posts guarantee wear-free performance and exceptional longevity.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation while reliably centering the string post within a 0.39 in. hole without requiring stepped headstock drilling. This design eliminates tilting torque, effectively relieving mechanical stress from both the post and the rear mounting screw. Every unit is permanently lubricated with Schaller special grease for completely maintenance-free functionality.
Built to the identical mounting dimensions of its historic predecessor, the M6 135 allows direct replacement and retrofitting on existing instruments without woodwork modifications. The self-locking internal drive mechanism maintains rock-solid pitch retention, making it an essential hardware upgrade for discerning musicians and custom instrument builders.
Brand
Schaller
Product Type
Guitar Tuning Machine
Series
M6 Series
Gear Ratio
1:18
Post Material
Brass
Product Weight
0.13 lb
Single Unit 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 Bore Hole
0.17 in. diameter with 0.14 in. driving surface
Lubrication
Permanently lubricated with Schaller special grease