Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with its refined 1:18 gear ratio. Originally setting the benchmark for closed tuners in 1966, this updated design features CNC-machined components and a self-locking drive for smooth, consistent tuning stability.
Equipped with high-grade brass posts precision-fitted to the housing, each tuner ensures wear-free operation and exceptional longevity. All closed tuners are permanently lubricated with Schaller special grease for completely maintenance-free performance.
An innovative stepped collar washer simplifies installation and securely centers the string post via the hollow bolt, eliminating the need for stepped headstock holes while reducing tilt torque and pressure on mounting screws.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| 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 |
| Weight per Single Tuner with Button (Small/Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g), Perloid: 1.06 oz / 1.09 oz (30 g / 31 g), Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.79 lb |
| Lubrication | Schaller special grease (maintenance-free) |
