Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine features a refined 1:18 gear ratio that delivers exceptional tuning precision and velvety-smooth operation. All components are precision CNC-machined and surface-finished, utilizing a self-locking drive to ensure uniform, sensitive, and stable performance.
Crafted with premium brass string posts precisely fitted into the housing, this machine head provides maximum tuning stability and wear-free longevity. It includes the innovative stepped M6 flanged washer, which centers the string post securely without requiring stepped peghead holes and eliminates tilting torque.
Permanently lubricated with Schaller special grease, every sealed unit remains completely maintenance-free. With identical mounting dimensions to its historic predecessor, it allows effortless replacement without requiring instrument modifications.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.3 oz / 1.3 oz), Perloid (1.1 oz / 1.1 oz), Ebony (1.1 oz / 1.1 oz) including hollow screw |
| Button Borehole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Product Weight | 0.13 lb |
| SKU | 10020271.01.55 |
| Brand | Schaller |
| Series | M6 Series |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |




















