Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine features an upgraded 1:18 gear ratio that delivers exceptional precision and smooth tuning comfort. All components are CNC-machined with high accuracy and surface-treated to guarantee smooth, sensitive, and stable tuning through its self-locking drive.
Precision-fitted brass string posts ensure maximum tuning stability and wear resistance, while permanent lubrication with Schaller special grease keeps the closed housing completely maintenance-free. The innovative stepped M6 flanged washer reliably centers the string post via the hollow bolt, eliminating tilting friction and removing mechanical stress without requiring stepped headstock holes.
Designed with identical mounting dimensions to its classic predecessor, the M6 90 serves as a direct drop-in replacement without requiring guitar modifications. It offers reliable tuning precision for standard solid, slotted, or locking configurations.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| 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 bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Product Weight | 0.13 lb |
