Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision and tuning comfort with an upgraded 1:18 gear ratio. CNC-machined components and high-grade brass string posts provide smooth operation, reliable self-locking drive performance, and exceptional tuning stability.
Featuring the innovative stepped flanged washer, this tuning machine centers the string post securely through the banjo bolt without requiring a stepped headstock bore. This design eliminates tilting torque and protects both the post and rear mounting screw from unnecessary stress.
Engineered to match the mounting dimensions of previous generations, the M6 135 serves as a direct drop-in replacement without instrument modifications. Each enclosed unit is permanently lubricated with specialized Schaller grease for lifelong, maintenance-free performance.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Product Weight | 0.13 lb |
| 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 banjo bolt |
| Included Hardware | Banjo bolts, stepped flanged washers, mounting screws (M2.2 x 9.5 mm) |
