Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers exceptional tuning accuracy and smooth operation with its refined 1:18 gear ratio. Engineered with high-precision CNC-machined components and high-grade brass string posts, it ensures outstanding tuning stability and long-lasting durability.
Featuring the innovative stepped M6 washer, this tuner allows effortless installation and precise centering of the string post without requiring a stepped peghead bore. This design eliminates tilting torque and reduces mechanical stress on both the post and mounting screws.
All enclosed internal gears are permanently lubricated with Schaller special grease for completely maintenance-free performance. Its identical mounting dimensions to predecessor models ensure a direct, modification-free replacement on compatible instruments.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 90 |
| SKU | 10050171.01.35 |
| Gear Ratio | 1:18 |
| String Post Material | High-Grade Brass |
| Product Weight | 0.13 lb |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Lubrication | Schaller Special Grease (Maintenance-Free) |


















