Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine features a refined 1:18 gear ratio, delivering precise, velvety-smooth tuning comfort and exceptional tuning stability. Built with high-precision CNC-machined components and a self-locking drive, it provides uniform, sensitive adjustment for demanding musicians.
Crafted with premium brass string posts precision-fitted into the housing, the M6 90 ensures maximum wear resistance. The innovative stepped M6 flanged washer reliably centers the string post without requiring a stepped headstock bore, effectively eliminating tilting torque and reducing strain on mounting hardware.
Each closed machine is permanently lubricated with Schaller special grease for maintenance-free operation. Featuring identical mounting dimensions to its classic predecessor, the M6 90 serves as a seamless, modification-free upgrade or replacement.
| 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 hollow screw |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Product Weight | 0.79 lb |
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Post Material | Brass |
| Housing Type | Closed / Sealed |
| Lubrication | Permanent Schaller Special Grease |
