Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with its refined 1:18 gear ratio. All components are CNC-machined to exact tolerances and finished with a durable surface coating, while high-grade brass string posts ensure wear-free operation and maximum tuning stability.
Featuring the innovative stepped flanged washer, this tuning machine aligns the post reliably through the headstock without the need for step-drilling. This design eliminates tilting torque and reduces strain on both the string post and rear mounting screws for a secure, flawless installation.
Equipped with self-locking drive mechanics and permanently lubricated with Schaller special grease, the enclosed housing provides smooth, maintenance-free performance. Designed to match the exact mounting dimensions of previous M6 models, it installs effortlessly as a direct replacement upgrade.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Weight | 0.13 lb |
| Lubrication | Schaller special grease (maintenance-free) |
