Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an advanced 1:18 gear ratio. Designed as an evolution of the legendary original sealed tuner, it incorporates modern engineering refinements while maintaining classic aesthetics.
Precision CNC-machined components and high-grade brass string posts ensure smooth operation, maximum tuning stability, and wear-free performance. The self-locking drive and permanently lubricated housing provide reliable, maintenance-free functionality for years of use.
Featuring the innovative stepped M6 flanged collar with a 0.39 in (10 mm) base diameter, this design centers the string post securely through the banjo bolt without requiring a stepped headstock hole. It matches the mounting dimensions of previous iterations for seamless drop-in replacement.
| Gear Ratio | 1:18 |
| 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 drive flat |
| Product Weight | 0.79 lb |
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Post Material | Brass |
| Flanged Collar Diameter | 0.39 in |




















