Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets the benchmark for closed guitar tuning machines with an improved 1:18 gear ratio that provides velvety smooth operation and precise tuning comfort. Every component is CNC-machined to exacting tolerances and permanently lubricated with Schaller special grease for completely maintenance-free performance.
Equipped with high-grade brass string posts precisely fitted to the housing, these tuners ensure outstanding tuning stability and wear resistance. The innovative stepped M6 flanged washer reliably centers the string post without requiring a stepped headstock bore, eliminating tilting torque and reducing stress on the rear mounting screw.
Engineered with the identical installation dimensions as its classic predecessor, the M6 90 allows for seamless replacement on existing instruments without modification. Self-locking drive mechanics and versatile post configurations provide consistent, dependable tension control for any playing style.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Product Weight | 0.79 lb |
| Lubrication | Schaller Special Grease (Permanently Lubricated) |
