Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets the benchmark for enclosed guitar tuning machines, offering an upgraded 1:18 gear ratio for velvety smooth, ultra-precise tuning feel and exceptional stability. Precision CNC-machined components and high-grade brass posts ensure wear-free longevity and peak performance on stage and in the studio.
Featuring the innovative stepped M6 flanged washer, this tuning machine reliably centers the string post without requiring a stepped headstock hole. This mechanism eliminates tilting torque and distributes pressure away from both the string post and rear fixing screw for seamless installation.
Every closed M6 unit comes permanently lubricated with Schaller special grease for completely maintenance-free operation. Built to standard mounting specifications, it serves as a direct drop-in replacement for original M6 models without requiring headstock modifications.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Post Material | Brass |
| Product Weight | 0.13 lb (0.06 kg) |
| Lubrication | Permanent Schaller Special Grease |
