Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine offers unparalleled tuning comfort and precision engineered for guitarists. Featuring a refined 1:18 gear ratio, this closed-gear design delivers velvety smooth operation and reliable tuning stability. Every individual component is CNC-machined to exacting tolerances and permanently lubricated with Schaller special grease for entirely maintenance-free performance.
Crafted with premium high-grade brass string posts, the M6 90 eliminates mechanical wear and fits precisely within its housing. The innovative stepped flanged washer centers the string post securely over the banjo bolt, eliminating tilt and removing excess pressure from both the post and the rear mounting screw without requiring stepped peghead drilling.
Built to match the exact mounting dimensions of previous generations, the M6 90 allows for direct, seamless replacement and installation. Its robust self-locking drive ensures consistent, sensitive adjustments across all styles of play.
| Brand | Schaller |
| Series | M6 Series |
| 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 banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with drive flat 0.14 in (3.6 mm) |
| Post Material | High-Grade Brass |
| Item Weight | 0.13 lb |
