Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers refined performance and tuning comfort, building upon the iconic design that set the global benchmark for closed tuners. Engineered with a 1:18 gear ratio, it provides smooth, sensitive, and precise string adjustment with optimal stability.
Precision CNC-machined components and premium brass string posts are housed within a permanently lubricated, maintenance-free enclosure. The self-locking drive and close-tolerance fit prevent backlash, wear, and slip over extended use.
Equipped with Schaller's innovative stepped flanged washer, this tuning machine centers the string post securely through the hollow screw without requiring stepped headstock drilling. This design eliminates tilting torque and protects both the post and rear mounting screws from lateral pressure.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| String Post Material | High-Grade Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Individual Tuner Weight (Small/Large Button) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g), Perloid: 1.06 oz / 1.09 oz (30 g / 31 g), Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Lubrication | Permanently lubricated with Schaller special grease |
| Product Weight | 0.79 lb |
