Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an optimized 1:18 gear ratio. Designed with precision CNC-machined components and high-grade surface finishes, it ensures consistent, sensitive, and stable string tuning.
Equipped with high-quality brass string posts and permanently lubricated with Schaller special grease, each enclosed tuner offers completely maintenance-free operation and maximum tuning stability. The stepped M6 flanged washer reliably centers the string post without requiring stepped headstock drilling, eliminating tilt torque and protecting mounting hardware.
Featuring identical installation dimensions to its predecessor, the M6 90 enables direct retrofitting without instrument modification. High-tolerance engineering and premium materials ensure long-lasting wear resistance and dependable performance.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| 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) |
| Mounting Screw Size | M2.2 x 0.37 in (9.5 mm) |
| Total Weight | 0.79 lb |
