Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an upgraded 1:18 gear ratio. Continuing the legacy of the original closed-housing design established in 1966, this modern iteration combines proven durability with refined mechanical performance.
Precision CNC-machined components and high-grade brass posts ensure smooth, wear-free operation and maximum tuning stability. Each sealed tuning machine is permanently lubricated with Schaller special grease for completely maintenance-free functionality.
Featuring the innovative stepped M6 flanged washer, this tuner aligns the string post perfectly through the banjo bolt and eliminates tilting torque without requiring a stepped headstock bore. The M6 135 shares identical mounting dimensions with its predecessor model, allowing seamless replacement without modifications.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | High-grade Brass |
| Button Bore Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive 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) |
| Product Weight | 0.13 lb |
| Lubrication | Permanently lubricated with Schaller special grease |




















