Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single Guitar Tuning Machine combines classic vintage design with precise tuning stability and ultra-smooth operation. Designed with an open-gear and worm drive mechanism, it delivers dependable mechanical performance without reliance on synthetic polymer coatings for friction-free movement.
Equipped with a precise 1:18 gear ratio, this machine head provides fine adjustments and lasting durability. The permanently locked, sealed, and covered screw connections ensure maintenance-free, wear-resistant performance while countersunk screw holes provide firm seating and optimal resonance transfer to the headstock.
Engineered to standard instrument dimensions for trouble-free installation and replacement, this tuning machine comes with mounting screws and a hexagonal press-in bushing for solid headstock installations.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Single Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.1 lb |
| Weight per Machine Head | 0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean) including bushing |
| Button Dimensions | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Included Screws | 2 x Countersunk mounting screws per unit (M2.2 x 11) |
| Included Bushing | 1 x Hexagonal press-in bushing per unit (outer diameter 0.35 in, inner diameter 0.24 in, fits 0.24 in post) |
