Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents precision engineering and refined performance, setting a benchmark for closed tuners. Featuring an advanced 1:18 gear ratio, it ensures remarkably smooth, velvet-like tuning and unmatched pitch stability. High-grade CNC-machined components and surface-finished brass string posts deliver wear-free operation and exceptional longevity.
Equipped with an innovative stepped flanged washer, this tuning machine simplifies installation by reliably centering the string post via the banjo bolt. This eliminates the need for stepped peghead holes while counteracting tilt moments and reducing mechanical stress on mounting screws and posts. Each tuner is permanently lubricated with specialized Schaller grease for lifelong, maintenance-free performance.
With identical mounting dimensions to its classic predecessor, the M6 90 serves as a direct, modification-free replacement. Whether configured in standard, Locking, or TopLocking options, it delivers steadfast tuning reliability and professional craftsmanship for discerning musicians.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Weight | 0.79 lb |
| Single Tuner Weight 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 |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with drive flat 0.14 in (3.6 mm) |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Mounting Screws | M2.2 x 9.5 mm (0.37 in) |
| Lubrication | Schaller special permanent grease |
