Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents precision engineering and refined performance, building on the legacy that set the global benchmark for closed tuners in 1966. Featuring an upgraded 1:18 gear ratio, it ensures exceptionally smooth, accurate, and stable tuning comfort across all playing conditions.
Crafted with premium CNC-machined components and high-grade brass posts fitted seamlessly into the housing, this tuning machine delivers unmatched tuning stability and wear-free operation. Every sealed unit is permanently lubricated with Schaller special grease for a completely maintenance-free experience.
Installation is effortless and modification-free thanks to identical mounting dimensions as its predecessor, complemented by the innovative stepped M6 flanged collar. This specialized collar accurately centers the string post via the threaded bushing without requiring stepped headstock drilling, eliminating tilt torque and taking pressure off both the post and rear mounting screw.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | High-Grade Brass |
| Button Bore Hole | 0.17 in diameter with 0.14 in drive flat |
| Weight per Tuner (Small / Large Button) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including threaded bushing |
| Product Weight | 0.79 lb |
| Lubrication | Permanently lubricated with Schaller special grease |
