Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 Guitar Tuning Machine represents precision engineering and modern innovation in closed tuning machine heads. Featuring an enhanced 1:18 gear ratio, it provides exceptionally smooth, accurate, and stable tuning control. Every component is CNC-machined to exact tolerances and permanently lubricated with Schaller special grease for a completely maintenance-free lifespan.
Crafted with premium brass string posts fitted precisely into the housing, this tuning machine delivers high tuning stability and wear resistance. The innovative stepped M6 flanged washer reliably centers the string post without requiring a stepped peghead bore, eliminating tilting torque and reducing pressure on both the post and the rear mounting screw.
Designed with identical installation dimensions to its predecessor model, the M6 90 allows for seamless direct replacement without headstock modifications. It accommodates solid headstocks, slotted headstocks, and locking setups for effortless string changes and dependable performance.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| 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 | 0.17 in diameter with 0.14 in driving surface |
| Post Material | High-grade brass |
| Lubrication | Schaller special grease (permanently lubricated) |
| Mounting Washer | Stepped M6 flanged washer (0.39 in diameter) |
| Mounting Screws | M2.2 x 0.37 in |
