Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision engineering with a refined 1:18 gear ratio for smooth, accurate tuning. Building on the closed-housing standard set by the original M6 in 1966, this upgraded model features CNC-machined components and premium brass posts for maximum tuning stability and wear resistance.
Equipped with a stepped M6 flanged washer, this tuning machine enables straightforward mounting and reliable shaft centering without requiring a stepped headstock bore. The specialized internal grease permanently lubricates the sealed housing, delivering maintenance-free performance and eliminating shaft tilt under string tension.
Featuring the exact installation dimensions of its predecessor, the M6 135 serves as a direct, modification-free replacement. Each unit includes precise self-locking drive mechanics and high-grade mounting hardware for dependable instrument upgrades.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Button Bore Hole | 0.17 in diameter with 0.14 in driving surface |
| Lubrication | Permanently lubricated with Schaller special grease |
| Total Weight | 0.79 lb |
