Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a benchmark in guitar tuning precision with its refined 1:18 gear ratio, delivering ultra-smooth and accurate tuning stability. Featuring CNC-machined components and self-locking drive mechanics, it ensures consistent operation and long-term durability for demanding musicians.
Equipped with high-grade brass posts fitted into the housing and permanently lubricated with Schaller special grease, these sealed tuners are completely maintenance-free. The innovative stepped collar washer centers the string post securely through the banjo bolt, eliminating tilt and removing the need for stepped peghead holes.
Designed to share identical installation dimensions with its predecessor model, the M6 90 serves as a direct drop-in replacement without requiring headstock modifications. This set includes all necessary mounting hardware, including stepped washers, banjo bolts, and mounting screws.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| Series | M6 Series |
| 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 |
| Weight per Single Tuner with Button (Small/Large) | 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) |
| Product Weight | 0.79 lb |
| Lubrication | Maintenance-free permanent Schaller special grease |
