Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with an upgraded 1:18 gear ratio. CNC-machined components and high-grade brass string posts provide exceptional durability, smooth action, and long-lasting tuning stability.
Featuring the innovative stepped M6 flanged washer, this tuning machine centers the string post securely through the banjo bolt without requiring a stepped headstock bore. This design eliminates tilting torque and reduces strain on both the string post and rear mounting screw.
Permanently lubricated with Schaller special grease for maintenance-free operation, the closed housing design maintains identical installation dimensions to its predecessor for direct replacement without instrument modification.
| Gear Ratio | 1:18 |
| Weight per Tuner (Small/Large Button) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) flat |
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Housing Design | Sealed / Closed |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
