Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for enclosed tuners, featuring an upgraded 1:18 gear ratio for exceptionally precise, velvety smooth tuning action. Each component is CNC-machined to exacting tolerances and surface-finished, utilizing a self-locking drive mechanism to deliver reliable stability and sensitive adjustment.
Built with precision brass string posts fitted seamlessly into the housing, this tuning machine provides maximum wear resistance and sustained pitch stability. The design integrates Schaller's innovative stepped flanged washer, which centers the string post securely via the banjonut to eliminate tilt and relieve mechanical stress without requiring stepped peghead drilling.
Permanently lubricated with Schaller special grease for completely maintenance-free operation, the M6 135 retains the original mounting footprint for straightforward drop-in replacement on existing instruments without modification.
| Brand | Schaller |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) driving surface |
| Product Weight | 0.13 lb |
| Weight per Single Unit (Metal Button) | 0.08 lb / 0.08 lb (36 g / 38 g) |
| Weight per Single Unit (Perloid Button) | 0.07 lb / 0.07 lb (30 g / 31 g) |
| Weight per Single Unit (Ebony Button) | 0.07 lb / 0.07 lb (30 g / 31 g) |
| Lubrication | Schaller special grease (maintenance-free) |
