Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine features an advanced 1:18 gear ratio, delivering unmatched precision, smooth operation, and superior tuning comfort. Engineered with high-precision CNC-machined components and self-locking drive technology, it ensures consistent stability and sensitive adjustment for demanding musicians.
Built with premium brass string posts fitted directly into the housing, this tuning machine provides maximum wear resistance and dependable pitch stability. Closed-housing construction is permanently lubricated with Schaller special grease, rendering the internal mechanism completely maintenance-free across its lifetime.
The innovative stepped M6 flanged washer centers the string post securely through the banjo bolt without requiring stepped headstock drilling. Sharing identical mounting dimensions with its predecessor, it serves as a seamless, direct drop-in replacement that eliminates tilting moments and relieves tension on mounting hardware.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb |
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
