Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for precision and tuning stability. Engineered with an upgraded 1:18 gear ratio, it delivers an exceptionally smooth, accurate tuning process. Every component is CNC-machined to exact tolerances, featuring brass posts carefully fitted into sealed housings with permanent internal lubrication for completely maintenance-free performance.
A standout innovation is the stepped M6 flanged washer, designed with a 10 mm (0.39 in) stepped diameter to center the string post securely through the threaded bushing without requiring step-drilled headstock holes. This design eliminates tilt torque and absorbs mechanical stress, protecting both the string post and the rear mounting screw.
Featuring the identical mounting dimensions of its classic predecessor, the M6 135 is a direct, modification-free replacement for existing setups. Self-locking drive mechanics and wear-free brass construction ensure long-term reliability and precise pitch retention.
| Brand | Schaller |
| Product Line | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner 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) including threaded bushing |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Product Weight | 0.13 lb |
