Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high-precision engineering with an advanced 1:18 gear ratio, delivering ultra-smooth and accurate tuning performance. Every component is CNC-machined to exacting standards and surface-finished, featuring self-locking mechanics that ensure long-lasting tuning stability.
Equipped with high-grade brass posts fitted seamlessly into the housing, these tuners resist wear while offering effortless operation. All enclosed mechanisms come permanently lubricated with Schaller special grease, rendering them completely maintenance-free across extended use.
Installation is straightforward thanks to the stepped M6 collar washer with a 0.39-inch (10 mm) base diameter, which centers the string post securely without requiring stepped peghead drilling. This design eliminates tilting torque and reduces strain on both the post and rear mounting screws.
| Brand | Schaller |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Permanent Special Grease (Maintenance-Free) |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Collar Washer Diameter | 0.39 in (10 mm) |
| Weight per Single Tuner with Button (Small / Large) | Metal: 0.08 lb / 0.08 lb (36 g / 38 g), Perloid: 0.07 lb / 0.07 lb (30 g / 31 g), Ebony: 0.07 lb / 0.07 lb (30 g / 31 g) |
| Product Weight | 0.79 lb |
