Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents precision engineering and refined performance, setting a benchmark for closed tuners. Featuring an upgraded 1:18 gear ratio, it ensures precise, velvet-smooth tuning and exceptional stability. Every component is CNC-machined to exact tolerances, delivering self-locking gear action for steady, friction-free adjustments.
Equipped with high-grade brass posts fitted seamlessly into the housing, the M6 90 eliminates wear while maintaining superior pitch accuracy. The innovative stepped M6 flanged washer centers the string post securely across the hollow screw, removing tilt torque and eliminating the need for a stepped peghead bore.
Permanently lubricated with Schaller special grease, these tuners are fully maintenance-free and engineered for lasting reliability. Sharing identical mounting dimensions with its predecessor model, the M6 90 allows for direct, modification-free retrofitting on standard instruments.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Manufacturing | CNC-machined |
| 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) |
| Weight | 0.79 lb |
