Schaller M6 90 Tuning Machines
The Schaller M6 90 tuning machines deliver exceptional tuning precision and stability with an advanced 1:18 gear ratio. Designed with CNC-machined components and a self-locking drive, these enclosed tuners provide smooth, velvety operation and reliable performance without requiring regular maintenance.
Featuring high-grade brass string posts engineered for wear-free durability, the M6 90 incorporates an innovative stepped flanged washer. This 0.39 in (10 mm) base washer centers the post securely through the threaded bushing without requiring stepped headstock drilling, eliminating tilting torque and reducing stress on mounting components.
Built with identical mounting dimensions to its classic predecessor, the M6 90 serves as a direct drop-in replacement. Each sealed unit comes permanently lubricated with Schaller special grease to ensure lifetime maintenance-free performance across all compatible solid and slotted headstock instruments.
| Brand | Schaller |
| Series | M6 Series |
| Model Number | 1005 |
| Product Type | Tuning Machines |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Bore Hole Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Individual Weight (Small/Large Metal) | 1.27 oz / 1.34 oz (36 g / 38 g) |
| Individual Weight (Small/Large Perloid) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Individual Weight (Small/Large Ebony) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Set Weight | 0.79 lb (0.36 kg) |
