Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a benchmark for sealed guitar tuning machines, offering an advanced 1:18 gear ratio for velvety smooth, precise tuning control. All components are CNC-machined to exact tolerances, high-grade surface finished, and permanently lubricated with proprietary grease for maintenance-free operation.
Equipped with precision-turned brass string posts seated securely in the housing, this tuning machine delivers superior tuning stability and wear resistance. The specialized stepped flanged washer centers the string post through the banjo bolt without requiring a stepped peghead bore, eliminating tilting torque and protecting the post and mounting screw.
Featuring standard footprint dimensions compatible with previous models, it allows seamless replacement and upgrades on standard guitar headstocks. Built for long-term reliability and precise pitch retention, it is engineered for dependable professional performance.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| SKU | 10050270.02.35 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Weight | 0.8 lb |
| Single Unit Weight 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) |
| Button Bore Hole | 0.17 in diameter with 0.14 in driving surface |
| Lubrication | Permanently lubricated |
