Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers legendary performance and precision tuning. Featuring an improved 1:18 gear ratio, it provides an exceptionally smooth, accurate, and stable tuning experience for demanding guitarists.
Crafted with premium CNC-machined components and high-grade brass posts, each sealed unit incorporates a self-locking drive mechanism and is permanently lubricated with Schaller special grease for entirely maintenance-free operation.
Equipped with an innovative stepped M6 flanged washer, this tuning machine simplifies installation while reliably centering the string post. It maintains the identical mounting dimensions of its predecessor for seamless replacement without headstock modifications.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Button Borehole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) 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 hollow screw |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Permanently Lubricated) |
| Product Weight | 0.79 lb |




















