Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with its refined 1:18 gear ratio. All components are CNC-machined to exacting tolerances, surface-treated, and permanently lubricated with Schaller special grease for maintenance-free operation and smooth performance.
Equipped with high-grade brass posts fitted into the housing, this tuning machine provides maximum tuning stability and wear resistance. The innovative stepped M6 flanged washer centers the string post securely through the banjo bolt, preventing tilting and eliminating the need for a stepped peghead bore.
Engineered with identical installation dimensions to its predecessor, the M6 90 allows for direct replacement without instrument modifications. Its self-locking drive ensures consistent, delicate, and stable tuning response across various headstock configurations.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| SKU | 10050171.05.53 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Weight | 0.8 lb |
| Single Tuner Weight (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 | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) driving surface |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
