Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine features an upgraded 1:18 gear ratio for exceptionally precise and smooth tuning action. Each component is CNC-machined to exact tolerances, precision-finished, and permanently lubricated with Schaller special grease for entirely maintenance-free performance.
Crafted with high-grade brass posts precision-fitted into the housing, the M6 90 delivers ultimate tuning stability and wear-free longevity. The self-locking drive mechanism ensures consistent tension, sensitive feel, and rock-solid pitch retention during performance.
An innovative stepped M6 flanged washer centers the string post reliably through the banjo bolt without requiring a stepped headstock bore. This eliminates tilt torque while relieving stress from both the string post and rear mounting screw, maintaining exact installation dimensions for direct drop-in replacement.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Individual Weight (Small / Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) |
| Product Weight | 0.79 lb |
