Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high-precision engineering with an advanced 1:18 gear ratio for smooth, accurate tuning. CNC-machined parts and a self-locking drive ensure outstanding tuning stability, delicate adjustment, and lasting wear resistance.
Equipped with high-grade brass string posts precisely fitted into the housing, this enclosed machine head provides reliable performance. The innovative stepped M6 flanged washer centers the string post securely without requiring stepped peghead drilling, eliminating tilt torque and taking pressure off both the post and fixing screw.
Featuring permanent internal lubrication with Schaller special grease, the M6 90 is completely maintenance-free. It shares identical mounting dimensions with its predecessor model, allowing for direct replacement and effortless installation on compatible instruments.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Weight per Single Unit (Small / Large Button) | 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) |
| Weight | 0.79 lb |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
