Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with its improved 1:18 gear ratio. All components are high-precision CNC-machined and surface-finished, featuring a self-locking drive that provides smooth, sensitive, and reliable tuning stability.
Crafted with premium brass string posts precisely fitted into the housing, this sealed tuning machine ensures maximum wear resistance and pitch stability. The innovative stepped M6 flanged washer reliably centers the string post via the banjo bolt, eliminating tilt torque and protecting structural components without requiring a stepped peghead hole.
Permanently lubricated with Schaller special grease for completely maintenance-free operation, the M6 90 shares the exact mounting dimensions of its classic predecessor for direct drop-in replacement. Available across multiple configurations, including standard and locking post options, it offers professional-grade performance for discerning players.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Unit 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) |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
