Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for precision and stability, featuring an improved 1:18 gear ratio that delivers a velvety-smooth and precise tuning process. Every component is CNC-machined to exact tolerances, premium surface-finished, and utilizes a self-locking drive mechanism to maintain consistent and sensitive adjustment.
Engineered with high-grade brass posts fitted seamlessly into the housing, this closed tuner guarantees maximum tuning stability and wear resistance. Permanent lubrication with specialized Schaller grease ensures the entire assembly remains completely maintenance-free throughout its operating life.
Featuring the innovative stepped M6 flanged washer, it eliminates tilting moments, relieves stress from the mounting screws, and allows straightforward installation without requiring stepped peghead bore holes. Retaining the exact mounting dimensions of its predecessor, it serves as a seamless replacement upgrade for modern guitars.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving flat 0.14 in (3.6 mm) |
| Weight per Unit with Button | 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 banjonut |
| Product Weight | 0.79 lb |




















