Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark with its refined engineering and classic styling. Featuring a precise 1:18 gear ratio, it delivers ultra-smooth, accurate tuning and exceptional pitch stability across various headstock configurations.
Precision CNC-machined components and premium brass string posts are housed within a permanently lubricated enclosure, ensuring completely maintenance-free operation. The self-locking drive and precision-fitted parts eliminate mechanical play and ensure long-term durability.
Equipped with an innovative stepped M6 flanged washer, this tuner centers the string post securely without requiring stepped peghead counterbores. This design eliminates tilting torque and reduces strain on both the string post and rear mounting screws for a seamless upgrade or replacement.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter 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) including hollow screw |
| Product Weight | 0.13 lb |
| Lubrication | Permanently lubricated with Schaller special grease |




















