Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine combines legendary design with modern engineering, featuring an advanced 1:18 gear ratio for exceptionally smooth and precise tuning. High-precision CNC-machined components and premium surface finishing ensure velvety action and rock-solid pitch stability across all playing conditions.
Engineered for maximum durability, high-grade brass string posts fit tightly within the housing to eliminate mechanical play and wear. The enclosed mechanism comes permanently lubricated with Schaller special grease, providing completely maintenance-free operation over the lifetime of the tuner.
Featuring the innovative stepped M6 flanged washer, this tuning machine reliably self-centers the string post without requiring stepped headstock holes. This design absorbs mechanical pressure and tilt momentum, ensuring an easy retrofit installation matching previous M6 housing dimensions.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Borehole | 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), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Mounting Screw Size | M2, 2 x 9.5 |
| Item Weight | 0.79 lb |
