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, surface-finished, and permanently lubricated with Schaller special grease for maintenance-free, self-locking performance.
Equipped with high-grade brass string posts engineered for maximum tuning stability, each unit fits snugly into the housing to prevent wear. The innovative stepped M6 flanged washer centers the post securely through the threaded bushing without requiring stepped peghead holes, eliminating tilting torque.
Featuring the exact installation dimensions of its predecessor, the M6 90 offers seamless drop-in replacement on standard headstocks. Premium engineering ensures durable, smooth operation across diverse playing demands.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including threaded bushing |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
