Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and velvet-smooth tuning comfort thanks to its refined 1:18 gear ratio. Designed with high-precision CNC-machined components and high-grade brass posts, it ensures maximum tuning stability, wear-free performance, and self-locking drive operation.
Equipped with the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post without requiring a stepped headstock bore. This specialized design eliminates tilting torque and effectively relieves stress from both the post and rear mounting screw.
Sharing identical mounting dimensions with its predecessor model, the M6 90 allows for direct, modification-free retrofitting. Every closed housing is permanently lubricated with Schaller special grease for completely maintenance-free longevity.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Single Unit Weight with Button (Metal) | 1.27 oz / 1.34 oz (36 g / 38 g) |
| Single Unit Weight with Button (Perloid) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Single Unit Weight with Button (Ebony) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.79 lb |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
