Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 Guitar Tuning Machine delivers exceptional tuning accuracy and velvety-smooth operation through an advanced 1:18 gear ratio. Continuing the legacy of the original 1966 closed-housing design, this refined model integrates precision CNC-machined components with a self-locking drive for lasting tuning stability.
Equipped with high-grade brass string posts engineered for maximum wear resistance, each tuner features an innovative stepped flanged washer. This specialized collar accurately centers the string post via the banjo bolt, eliminating tilt momentum and stress on mounting screws without requiring stepped peghead drilling.
Each closed mechanism is permanently lubricated with proprietary Schaller special grease, ensuring maintenance-free performance. Designed with identical mounting dimensions to its predecessor, it allows seamless drop-in replacement across compatible instruments.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight 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 banjo bolt |
| Button Hole Bore | 0.17 in diameter with 0.14 in drive flat |
| Product Weight | 0.13 lb |
| String Post Material | High-Grade Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
