Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 Guitar Tuning Machine delivers legendary precision with an improved 1:18 gear ratio for smooth, accurate, and stable tuning comfort. Setting the worldwide standard for closed-type tuning machines, this design combines classic heritage with modern engineering innovations.
Every component is high-precision CNC-machined and surface-finished, featuring high-grade brass string posts engineered for wear-free durability and exceptional tuning stability. All enclosed tuners are permanently lubricated with Schaller special grease, making them completely maintenance-free.
The innovative stepped M6 flange washer provides effortless installation and ensures rock-solid post centering without requiring stepped headstock drilling. This smart feature eliminates tilting torque and reduces mechanical stress on both the string post and rear mounting screw.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore 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 (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Product Weight | 0.79 lb |
| Lubrication | Permanently lubricated with Schaller special grease |
