Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 delivers unmatched tuning precision and smooth operation with its refined 1:18 gear ratio. CNC-machined from premium materials, all internal components feature high-precision surface finishing and a self-locking drive mechanism to guarantee velvet-smooth, dependable tuning stability.
Equipped with high-grade brass string posts engineered for wear-free performance, each tuner housing is permanently lubricated with Schaller special grease for completely maintenance-free longevity. The innovative stepped M6 flanged washer reliably centers the string post through the banjo bolt, eliminating tilting torque and headstock pressure without requiring stepped drilling.
Featuring the exact standard installation dimensions of its classic predecessor, the M6 90 offers seamless drop-in replacement and straightforward mounting on modern and vintage instruments alike.
| Brand | Schaller |
| Product Line | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Weight per Single Tuner (Metal Button) | 0.08 lb (36 g) / 0.08 lb (38 g) |
| Weight per Single Tuner (Perloid Button) | 0.07 lb (30 g) / 0.07 lb (31 g) |
| Weight per Single Tuner (Ebony Button) | 0.07 lb (30 g) / 0.07 lb (31 g) |
| Product Weight | 0.79 lb |
