Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine features an advanced 1:18 gear ratio that delivers exceptional tuning precision and velvety-smooth operation. All components are CNC-machined to exact tolerances and surface-finished, utilizing a self-locking drive to maintain consistent and sensitive tuning stability.
Equipped with high-grade brass posts fitted precisely into the housing, this machine head provides maximum wear resistance and pitch stability. The innovative stepped M6 flanged washer centers the string post securely through the banjo bolt, eliminating tilt and removing mechanical stress without requiring stepped peghead drilling.
Permanently lubricated with Schaller special grease for maintenance-free performance, the M6 90 shares identical installation dimensions with its predecessor model for direct, seamless replacement on compatible headstocks.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| SKU | 10050170.04.53 |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Unit (Small/Large Button) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) |
| Product Weight | 0.79 lb |
| Lubrication | Permanently lubricated with Schaller special grease |
