Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine features a refined 1:18 gear ratio, delivering precise, velvety smooth tuning comfort and exceptional tuning stability. Built with CNC-machined components and high-grade brass posts, every unit is engineered for long-lasting, wear-free performance.
An innovative stepped M6 flanged washer reliably centers the string post via the banjo bolt, eliminating the need for a stepped hole in the headstock. This smart design prevents tilting moments and relieves mechanical strain on both the string post and rear mounting screws.
All enclosed machine heads are permanently lubricated with specialized Schaller grease for completely maintenance-free operation. Featuring identical installation dimensions to its predecessor, it serves as a seamless direct replacement on compatible instruments.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive surface |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
