Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for closed tuners, featuring an upgraded 1:18 gear ratio for smooth, velvety tuning and exceptional precision. Precision CNC-machined components with high-grade brass posts ensure maximum tuning stability and long-lasting, wear-free performance.
Equipped with Schaller's innovative stepped flanged collar, this tuning machine simplifies installation by reliably centering the string post directly through the hollow screw. This design eliminates tilting torque and protects both the post and rear mounting screws without requiring stepped headstock boreholes.
Featuring permanent Schaller special grease lubrication, the enclosed housing is entirely maintenance-free. With identical mounting dimensions to its legacy predecessor, it offers seamless replacement and drop-in compatibility for upgrades and custom configurations.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) flat |
| Post Material | Brass |
| Weight | 0.13 lb |
| Weight per Unit with Button (Small / Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Pearloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) including hollow screw |




















