Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an improved 1:18 gear ratio. Designed with CNC-machined components and high-grade brass string posts, it ensures smooth, sensitive, and stable tuning performance with lasting wear resistance.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post without requiring a stepped peghead bore. This design eliminates tilting torque and reduces mechanical stress on both the post and mounting screw.
Built with permanently lubricated internal mechanics using Schaller special grease, the enclosed housing is entirely maintenance-free. It shares identical mounting dimensions with its predecessor model for direct, seamless replacement on compatible headstocks.
| Brand | Schaller |
| Series | M6 Series |
| 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) drive flat |
| Weight per Single Tuner with Button (Small/Large) | Metal: 0.08 lb / 0.08 lb (36 g / 38 g), Perloid: 0.07 lb / 0.07 lb (30 g / 31 g), Ebony: 0.07 lb / 0.07 lb (30 g / 31 g) including banjonut |
| Product Weight | 0.13 lb |
| Lubrication | Schaller Special Grease (Maintenance-Free) |


















