Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 represents the pinnacle of closed tuning machine engineering, delivering an advanced 1:18 gear ratio for ultra-precise, velvet-smooth tuning and exceptional stability. Precision CNC-machined components and surface finishes pair with a self-locking drive mechanism to ensure uniform, sensitive operation across every turn.
Crafted with premium brass posts meticulously fitted into the housing, these machine heads eliminate wear while maintaining rock-solid pitch security. The specialized step flanged washer centers the string post securely through the hollow screw, removing the need for stepped headstock drilling and relieving pressure from the mounting screws.
Permanently lubricated with Schaller special grease for completely maintenance-free performance, the M6 90 shares identical mounting dimensions with its predecessor model, allowing seamless retrofitting without modifications.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including hollow screw |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb |
| Brand | Schaller |
| Model | M6 90 |
| Series | M6 Series |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
