Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a benchmark for closed guitar tuning machines with its precision 1:18 gear ratio, delivering ultra-smooth and accurate tuning performance. Every component is CNC-machined to exact tolerances and permanently lubricated with Schaller special grease for maintenance-free operation and long-lasting stability.
Equipped with high-grade brass string posts engineered for wear resistance, this tuner features the innovative stepped M6 flanged washer (10 mm diameter). This design centers the post securely through the banjo bolt, eliminating tilt torque and removing the need for a stepped peghead bore while protecting the mounting screws from excess stress.
Featuring the exact installation dimensions of its predecessor for drop-in replacement, the M6 90 ensures maximum tuning stability and effortless installation on modern solid and slotted guitar headstocks.
| Gear Ratio | 1:18 |
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Post Material | High-Grade Brass |
| Button Bore Hole | Diameter 4.2 mm (0.17 in) with 3.6 mm (0.14 in) driving flat |
| Lubrication | Permanently lubricated with Schaller special grease |
| Flanged Washer Diameter | 10 mm (0.39 in) with step |
| Mounting Screw Size | M2.2 x 9.5 mm (0.37 in) |
| Weight per Single Tuner with Button | Metal: 1.27 oz / 1.34 oz (36 g / 38 g), Perloid: 1.06 oz / 1.09 oz (30 g / 31 g), Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.79 lb (0.36 kg) |
