Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine features a refined 1:18 gear ratio that ensures velvet-smooth operation and precise, stable tuning. Precision CNC-machined components and a self-locking drive deliver exceptionally sensitive adjustments and reliable long-term performance.
Crafted with premium brass string posts precisely fitted into sealed housings, each unit is permanently lubricated with Schaller special grease for completely maintenance-free operation. The innovative stepped M6 flanged washer centers the string post without requiring stepped headstock drilling, effectively eliminating tilt momentum.
Engineered with identical mounting dimensions to its classic predecessor, the M6 90 allows for seamless direct replacement on solid or slotted headstocks without instrument modifications.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Housing Type | Sealed |
| Lubrication | Permanent Special Grease |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Product Weight | 0.79 lb |
