Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high precision and reliable tuning comfort. Engineered with a refined 1:18 gear ratio, it ensures an exceptionally smooth, accurate, and stable tuning performance. All components are CNC-machined with high precision and finished with self-locking drives to provide consistent feel and zero play.
Crafted with premium brass string posts precisely fitted into the housing, these tuners deliver maximum tuning stability and wear resistance. The innovative stepped M6 flanged washer centers the string post securely via the hollow screw, eliminating tilting torque and removing unnecessary strain from both the post and rear mounting screws without requiring stepped headstock drilling.
Permanently lubricated with Schaller special grease for completely maintenance-free operation, the M6 90 shares the exact mounting dimensions of its predecessor for effortless, drop-in replacement. Each set comes complete with banjo bolts, stepped flanged washers, and mounting screws for secure installation.
| Brand | Schaller |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Product Weight | 0.79 lb |
| Post Material | Brass |
| Mounting Screw Type | M2, 2 x 9.5 |
