Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a benchmark in guitar tuning technology with an upgraded 1:18 gear ratio that provides velvety-smooth action and pinpoint tuning precision. Built with precision CNC-machined components, self-locking drives, and wear-free brass string posts, it ensures uncompromised tuning stability and long-lasting performance.
Featuring the innovative stepped M6 flanged collar, this machine head reliably centers the string post through the hollow screw without requiring stepped headstock boreholes. This design eliminates tilting torque and significantly reduces physical stress on both the string post and rear mounting screws.
All enclosed components are lubricated for life with specialized Schaller grease for entirely maintenance-free operation. Engineered with the identical installation dimensions as its classic predecessor, it serves as a seamless replacement with no guitar modifications required.
| Brand | Schaller |
| Model Number | 1005 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive surface |
| Flanged Collar Diameter | 0.39 in (10 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) |
| Product Weight | 0.79 lb |
| Lubrication | Schaller special grease, maintenance-free |
