Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precise tuning comfort and reliable performance with an upgraded 1:18 gear ratio. Designed with CNC-machined components and surface finishes, it features a self-locking drive mechanism that ensures smooth, responsive, and stable tuning.
Equipped with high-grade brass posts precisely fitted into the housing, this tuning machine provides maximum tuning stability and wear resistance. The innovative stepped M6 flanged washer eliminates tilt torque, protects the string post, and centers the assembly without requiring stepped peghead drilling.
Permanently lubricated with Schaller special grease for completely maintenance-free operation, the M6 90 matches standard installation dimensions for straightforward replacement and setup.
| Brand | Schaller |
| Series | M6 Series |
| 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) flat |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Product Weight | 0.13 lb |
| Lubrication | Schaller Special Grease (Maintenance-Free) |




















