Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents precision engineering with an advanced 1:18 gear ratio, delivering sensitive tuning control and outstanding pitch stability. Built with CNC-machined components and a self-locking drive mechanism, each unit ensures smooth, low-wear operation. High-grade brass posts are fitted precisely into the housing to guarantee enduring reliability and performance.
Equipped with the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post via the hollow bolt, eliminating the need for a stepped peghead bore. This design eliminates tilting torque and relieves mechanical stress on both the string post and rear mounting screws. Each closed unit is permanently lubricated with specialized grease for completely maintenance-free functionality.
Engineered to match the exact mounting dimensions of its predecessor, the M6 90 allows for direct drop-in replacement on guitars without requiring instrument modifications. It accommodates varied headstock configurations and features robust surface treatments that endure rigorous playing demands over years of use.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Single Tuner 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 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 |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
