Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precise and smooth tuning performance with its advanced 1:18 gear ratio. All components are high-precision CNC-machined, surface-treated, and feature a self-locking drive that guarantees uniform, delicate, and stable tuning.
Equipped with high-grade brass string posts precisely fitted into the housing, this tuning machine provides maximum tuning stability and wear-free operation. Sealed and permanently lubricated with Schaller special grease, the enclosed mechanism remains completely maintenance-free throughout its lifespan.
Featuring the innovative stepped M6 flanged washer with a 0.39-inch diameter, it reliably centers the string post via the banjo bolt and eliminates tilt torque without requiring a stepped headstock bore. The M6 90 matches the identical installation dimensions of its predecessor for effortless, modification-free retrofits.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| 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 |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Mounting Screw Size | M2.2 x 9.5 mm (0.37 in) |
| String Post Material | Brass |
| Lubrication | Schaller special grease (permanently lubricated, maintenance-free) |
| Weight | 0.79 lb |
