Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precise and smooth tuning performance with its refined 1:18 gear ratio. All components are CNC-machined to exact tolerances and finished for long-term tuning stability and wear-free operation.
Featuring high-grade brass string posts engineered into a durable enclosed housing, these tuners are permanently lubricated with Schaller special grease for maintenance-free use. The innovative stepped M6 flanged washer ensures proper alignment and direct installation without requiring stepped headstock boreholes.
Designed with identical mounting dimensions to its classic predecessor, the M6 90 offers a seamless drop-in replacement while eliminating tilting torque and reducing pressure on mounting screws.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Mounting Screws | M2.2 x 9.5 mm (0.37 in) |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| 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 |
| Product Weight | 0.79 lb |
