Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precise tuning performance with a refined 1:18 gear ratio for smooth and velvety operation. High-precision CNC-machined components and surface finishes ensure consistent, delicate, and stable tuning through a self-locking drive mechanism.
Equipped with premium brass string posts precisely fitted into the housing, this machine head guarantees maximum tuning stability and wear resistance. Closed housings are permanently lubricated with Schaller special grease, rendering the unit completely maintenance-free over its operating life.
The innovative stepped M6 flanged washer centers the string post reliably via the banjo bolt, eliminating tilting moment and removing pressure from both the post and rear mounting screw. Sharing identical mounting dimensions with its predecessor, it allows direct retrofitting without headstock modifications.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Post Material | Brass |
| Button Borehole | 0.17 in diameter with 0.14 in driving surface |
| 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 |
