Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with its refined 1:18 gear ratio. All components are CNC-machined to exact tolerances and surface-finished, providing a self-locking drive that ensures smooth, sensitive, and highly stable performance.
Crafted with premium brass string posts precisely fitted into the housing, these tuners provide exceptional tuning stability and long-term wear resistance. The specialized stepped M6 flanged washer reliably centers the string post via the banjo bolt, eliminating tilt and removing stress from both the post and rear mounting screws.
Permanently lubricated with Schaller special grease for completely maintenance-free operation, the M6 90 shares the identical mounting dimensions of its predecessor for seamless replacement without headstock modifications.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| 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 banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Product Weight | 0.79 lb |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
