Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high precision and legendary tuning stability. Engineered with a refined 1:18 gear ratio, it ensures an ultra-smooth, delicate, and accurate tuning experience for demanding guitarists.
Crafted with premium CNC-machined components and high-grade brass string posts, this enclosed tuner guarantees wear-free performance. Each unit is permanently lubricated with Schaller special grease for completely maintenance-free operation over its lifespan.
Featuring the innovative stepped M6 flanged washer, it enables effortless installation and solid post centering without requiring stepped headstock drilling. This direct replacement fits existing M6 90 dimensions perfectly, preventing tilting and reducing mechanical stress.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| SKU | 10050470.01.55 |
| 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 Bore Hole | Diameter 0.17 in with driving surface 0.14 in |
| Lubrication | Permanently lubricated with Schaller special grease |




















