Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 tuning machine sets a benchmark for closed guitar tuners, featuring an upgraded 1:18 gear ratio for velvety smooth and precise tuning accuracy. Every component is CNC-machined and surface-treated to guarantee consistent, ultra-stable tuning performance via its self-locking drive mechanism.
Built with premium brass string posts carefully fitted to the housing, this tuning machine delivers high tuning stability and wear-free longevity. It includes the innovative stepped M6 flanged washer (0.39 in diameter), which reliably centers the string post via the banjo bolt, eliminating the need for a stepped headstock hole and reducing mechanical stress.
Featuring the exact same installation dimensions as its legacy predecessor, the M6 135 allows for seamless, direct-replacement upgrades without headstock modifications. All enclosed internal mechanisms are permanently lubricated with specialized Schaller grease for lifelong, maintenance-free operation.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.13 lb |
| Post Material | High-grade Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) flat |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) |
| Lubrication | Permanently lubricated with Schaller special grease |
