Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents precision engineering with an advanced 1:18 gear ratio, delivering unmatched tuning accuracy and smooth operation. Designed to match the exact mounting dimensions of its predecessor, it allows for effortless replacement and upgrades without headstock modifications.
Crafted with high-precision CNC-machined components and surface finishes, the M6 90 features a self-locking drive and premium brass string posts precisely fitted into the housing for maximum tuning stability and wear resistance. Each enclosed tuner is permanently lubricated with Schaller special grease for maintenance-free performance.
Featuring the innovative stepped M6 flanged washer, this tuner reliably centers the string post via the banjo bolt, eliminating tilt torque and relieving stress on both the post and rear mounting screw without requiring stepped peghead counterbores.
| Brand | Schaller |
| Model | M6 90 |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Manufacturing | Precision CNC-Machined |
| Lubrication | Permanently Lubricated (Maintenance-Free) |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Mounting Screw Size | M2.2 x 9.5 |
| Single Tuner Weight with Button (Small/Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.79 lb |
