Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine sets an industry benchmark for closed-type tuners, delivering velvety smooth operation and reliable tuning stability. Engineered with a refined 1:18 gear ratio and high-precision CNC-machined components, it provides fine and sensitive adjustments for any playing style.
Featuring high-grade brass string posts and permanently lubricated internal gears, this tuner ensures completely maintenance-free performance and exceptional longevity. The innovative stepped M6 flanged washer reliably centers the string post without requiring stepped headstock drilling, effectively eliminating tilt and relieving pressure on the mounting screws.
Sharing identical mounting dimensions with its predecessor model, the M6 90 serves as a seamless drop-in replacement that requires no headstock modifications. Premium finishes and solid internal engineering guarantee maximum wear resistance and stable pitch under demanding conditions.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Weight | 0.13 lb |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Lubrication | Permanently lubricated with Schaller special grease |
