Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for closed-type tuners, delivering unmatched precision and tuning stability. Engineered with a refined 1:18 gear ratio, it ensures an ultra-smooth, delicate, and highly responsive tuning experience. Every component is CNC-machined to exact tolerances and permanently lubricated with Schaller special grease for completely maintenance-free operation.
Crafted with premium high-grade brass string posts precisely fitted into the housing, the M6 135 guarantees maximum wear resistance and pitch accuracy. Its innovative stepped flanged washer centers the string post securely through the banjo bolt without requiring step-drilling into the headstock, effectively eliminating tilting torque and reducing stress on the mounting screws.
Featuring the exact same installation dimensions as its classic predecessor, this tuner allows for direct drop-in replacement on guitars without any woodwork modifications. Built to provide reliable performance and exceptional longevity, it represents legendary German engineering perfected for modern players.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Model | M6 135 |
| SKU | 10020271.02.37 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| 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) |
| Product Weight | 0.13 lb |
| Lubrication | Permanently lubricated with Schaller special grease |


















