Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents precision engineering with an advanced 1:18 gear ratio, delivering ultra-smooth and precise tuning performance. Built as an evolved classic, it retains iconic styling while incorporating modernized structural components.
Crafted with high-precision CNC-machined components and premium brass string posts, this enclosed tuner ensures optimal tuning stability and zero wear. All internal assemblies are permanently lubricated with Schaller special grease for completely maintenance-free operation.
Featuring the innovative stepped M6 flanged washer, it eliminates the need for stepped headstock drilling by reliably centering the string post via the hollow bolt. This design effectively removes tilt torque, distributing tension away from both the post and the rear mounting screw.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Weight | 0.79 lb |
| 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 Borehole | 0.17 in diameter with 0.14 in driving flat |
| Lubrication | Schaller Special Grease, permanently lubricated |
