Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a benchmark in guitar tuning technology, featuring a precision 1:18 gear ratio that delivers velvet-smooth action and exact tuning control. Engineered with high-precision CNC-machined components and premium brass string posts, it ensures long-term tuning stability and wear-free operation.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies headstock installation while reliably centering the string post without requiring stepped counterbores. This design eliminates tilting torque and protects both the post and rear mounting screws from lateral stress.
Equipped with Schaller's permanent special lubricant, the sealed housing provides completely maintenance-free performance. Retaining the exact mounting dimensions of previous iterations, it serves as an effortless drop-in replacement for upgrades or vintage repairs.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Lubrication | Permanent Special Grease (Maintenance-Free) |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) driving surface |
| Product Weight | 0.79 lb |
| Weight per Single Tuner with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt |
