Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine series sets an industry standard for sealed tuners, featuring an upgraded 1:18 gear ratio for velvety smooth and highly precise tuning action. Each component is CNC-machined to exact tolerances and engineered with a self-locking drive mechanism to deliver unwavering tuning stability.
Equipped with high-grade brass string posts fitted directly into the sealed housing, these tuners resist wear and maintain strict alignment under continuous tension. The innovative stepped M6 flanged collar simplifies mounting, securely centers the string post through the threaded bushing, and removes tilting torque without requiring stepped peghead counterbores.
Permanently lubricated with Schaller special grease, these maintenance-free tuning machines retain identical mounting dimensions to legacy models for effortless, modification-free drop-in replacement on solid and slotted headstocks.
| Gear Ratio | 1:18 |
| Weight per Single Tuner (Small/Large Button) | 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 | 0.17 in diameter with 0.14 in driving surface |
| Product Weight | 0.79 lb |
| Housing Type | Sealed |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
