Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high-precision German engineering, setting standards for enclosed tuners with an advanced 1:18 gear ratio for smooth, accurate, and stable tuning. Each component is CNC-machined to exacting tolerances and features self-locking drive mechanics to ensure sensitive adjustment and lasting pitch stability.
Equipped with high-grade brass string posts engineered seamlessly into the housing, this tuning machine delivers wear-free operation and exceptional longevity. The innovative stepped M6 flanged washer centers the string post reliably via the threaded bushing, eliminating tilt moment and eliminating the need for stepped peghead holes.
Permanently lubricated with Schaller special grease for completely maintenance-free performance, the M6 90 shares the identical installation footprint with its predecessor for effortless drop-in replacement on electric and acoustic guitars.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Lubrication | Maintenance-free Schaller Special Grease |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb |
| Mounting Type | 90 Degree |




















