Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents the benchmark for enclosed tuners, featuring an upgraded 1:18 gear ratio that ensures ultra-precise and smooth tuning action. Each component is CNC-machined to exact tolerances and permanently lubricated with Schaller special grease for completely maintenance-free operation.
Equipped with high-grade brass string posts engineered seamlessly into the housing, the M6 90 guarantees exceptional tuning stability and maximum wear resistance. The innovative stepped M6 flanged washer centers the string post securely through the threaded bushing, eliminating tilting torque and protecting mounting hardware without requiring stepped headstock holes.
Designed with standard mounting dimensions identical to its predecessor, this tuner offers an effortless drop-in replacement without headstock modifications. Self-locking drive mechanics ensure velvety, sensitive, and rock-solid pitch retention for high-demand musicians.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| 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 threaded bushing |
| Total Product Weight | 0.8 lb |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| String Post Material | High-Grade Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Series | M6 Series |
