Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. CNC-machined from premium materials with high-grade surface finishing, it ensures consistent, fine-tuned, and stable performance.
Featuring high-grade brass posts fitted precisely into the housing, this enclosed tuner guarantees maximum tuning stability and wear-free operation. Internal components are permanently lubricated with Schaller special grease for completely maintenance-free longevity.
The stepped M6 flanged washer centers the string post securely via the hollow screw, preventing tilting torque and eliminating the need for a stepped headstock bore while maintaining identical installation dimensions to previous models for direct replacement.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| 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 Borehole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Total Weight | 0.13 lb |
| Lubrication | Permanently lubricated with Schaller special grease |
