Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 represents precision engineering and refined performance, setting a benchmark for enclosed guitar tuning machines. Equipped with an improved 1:18 gear ratio, it delivers an ultra-smooth, delicate, and highly accurate tuning experience. Each component is CNC-machined and finished to ensure lasting durability and reliable self-locking performance.
Crafted with premium brass string posts fitted directly into the housing, this machine head provides maximum tuning stability and wear-free operation. The specialized stepped M6 flanged washer centers the string post securely through the hollow screw, preventing tilting torque, relieving pressure from the rear mounting screw, and eliminating the need for a stepped peghead bore.
Engineered for seamless upgrades, the M6 90 retains identical installation dimensions to its predecessor for direct replacement without instrument modifications. Sealed with Schaller permanent lubricating grease, these tuning machines ensure entirely maintenance-free reliability over years of playing.
| Brand | Schaller |
| Product Line | M6 Series |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| 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 | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Product Weight | 0.13 lb |
