Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 represents precision engineering with an advanced 1:18 gear ratio, delivering smooth tuning and exceptional pitch stability. Built with CNC-machined components and a self-locking drive, this closed guitar machine head ensures consistent, sensitive, and reliable operation.
Featuring high-grade brass string posts precisely fitted into the housing, the M6 90 offers wear-free performance. The innovative stepped M6 flanged washer centers the string post securely over the banjo bolt, eliminating tilting moment and removing the need for a stepped peghead hole.
Permanently lubricated with Schaller special grease, these maintenance-free tuning machines share identical installation dimensions with predecessor models for direct, modification-free replacement.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Button Hole | Diameter 4.2 mm with driving flat 3.6 mm |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
