Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precision and tuning comfort with an improved 1:18 gear ratio. All components are CNC-machined and surface-finished to ensure smooth, sensitive, and stable tuning through its self-locking drive mechanism.
Equipped with high-grade brass string posts engineered for wear-free durability, this tuning machine features an innovative stepped flanged washer. The 0.39-inch diameter stepped washer reliably centers the string post without requiring a stepped headstock bore, eliminating tilt torque and protecting mounting screws.
Permanently lubricated with Schaller special grease for completely maintenance-free operation, the M6 90 retains the exact mounting dimensions of its predecessor for seamless installation and replacement.
| Gear Ratio | 1:18 |
| 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 |
| Button Hole Bore | 0.17 in diameter with 0.14 in driving surface |
| Brand | Schaller |
| Series | M6 Series |
| String Post Material | Brass |
| Lubrication | Schaller special grease (maintenance-free) |
| Stepped Washer Diameter | 0.39 in |
| Product Weight | 0.79 lb |
