Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a benchmark for closed guitar tuning machines, featuring a precise 1:18 gear ratio for exceptionally smooth and accurate tuning stability. Built with CNC-machined components, high-grade brass string posts, and a self-locking drive, this tuning machine delivers dependable performance and resistance to wear.
Equipped with Schaller's innovative stepped flanged washer, this machine ensures effortless installation and secure axis centering without the need for stepped headstock drilling. This design eliminates tilting torque and reduces direct mechanical stress on both the post and rear mounting screws.
Each unit is permanently lubricated with Schaller special grease for completely maintenance-free operation over its lifespan. Matching the original mounting dimensions, the M6 90 serves as a direct drop-in replacement for effortless guitar upgrades.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Unit (Small / Large Button) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Bore Diameter | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb |
