Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents an advanced evolution of the legendary original sealed tuner, engineered for precise and effortless tuning performance. Featuring an enhanced 1:18 gear ratio, this component provides exact, velvet-smooth adjustment with complete wear-free reliability. High-precision CNC machining across all parts ensures an ultra-responsive, self-locking drive designed for lifetime stability.
Crafted with premium brass string posts and permanently lubricated using Schaller special grease, each tuning machine requires zero maintenance. The innovative stepped M6 flanged washer centers the string post securely through the banjo bolt, removing tilt torque and eliminating the need for a stepped peghead bore while protecting internal components from mechanical strain.
Built with identical mounting dimensions to its legacy predecessor, the M6 90 allows for direct, modification-free retrofitting on compatible instruments. String attachment options include robust locking and top-locking configurations, providing superior tuning stability and fast restringing for demanding studio and stage applications.
| 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 0.14 in (3.6 mm) drive flat |
| Brand | Schaller |
| Model | M6 90 |
| Series | M6 Series |
| SKU | 10050170.04.55 |
| Product Weight | 0.79 lb |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Permanently Lubricated) |
