Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers precise, velvet-smooth tuning performance with its refined 1:18 gear ratio. Engineered with CNC-machined components and premium brass string posts, it ensures outstanding tuning stability, self-locking drive precision, and wear-free operation.
Featuring the innovative stepped M6 flanged washer with an outer diameter of 0.39 in (10 mm), this tuning machine reliably centers the string post without requiring stepped headstock drilling. This design eliminates tilting torque and effectively relieves mechanical pressure from both the post and the rear mounting screw.
Built to the identical mounting dimensions of its predecessor, the M6 135 allows for seamless drop-in replacement on standard guitars without headstock modifications. All enclosed internal mechanisms are permanently lubricated with specialized grease for lifelong, maintenance-free reliability.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) driving surface |
| Single Tuner Weight with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt |
| Product Weight | 0.79 lb |
| Mounting Screw Size | M2.2 x 9.5 |
| Included Items | 6 x Banjo Bolts, 6 x Flanged Washers, 6 x Mounting Screws |
