Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. All components are CNC-machined to exact tolerances and surface-finished, featuring a self-locking drive mechanism that ensures stable and delicate adjustments.
Crafted with premium brass string posts precisely fitted into the housing, this tuning machine provides maximum tuning stability and wear resistance. The innovative stepped M6 flanged washer centers the post reliably across the headstock bore hole without requiring stepped drilling, eliminating tilting torque and protecting the mounting hardware.
Permanently lubricated with Schaller special grease for completely maintenance-free operation, the M6 90 matches the exact installation dimensions of its predecessor for direct, modification-free replacement.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| 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 | 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 | Schaller Special Grease (Maintenance-Free) |
