Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents closed-type tuning technology engineered for supreme stability and smooth performance. Featuring an enhanced 1:18 gear ratio, it provides unmatched precision and fine-tuning control across diverse instrument setups.
Precision CNC-machined components and surface finishes pair with wear-free, precision-fitted brass string posts to ensure lasting tuning stability. Each enclosed unit is permanently lubricated with Schaller special grease, rendering the entire mechanism completely maintenance-free.
Equipped with the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post without requiring stepped headstock boreholes. It shares identical mounting dimensions with its predecessor, allowing seamless drop-in replacement on standard headstocks.
| Brand | Schaller |
| Manufacturer | Schaller GmbH |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Single Tuner Weight 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 Hole Bore | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Post Material | High-grade brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Mounting Compatibility | Direct replacement for previous M6 90 footprint |
