Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single Guitar Tuning Machine combines classic vintage aesthetics with precise tuning performance and ultra-smooth operation. Designed with an open-gear configuration and precision worm drive, it delivers exceptional resonance and tuning accuracy without relying on polymer coatings.
Featuring an 18:1 gear ratio, this tuning machine provides meticulous tuning stability and wear-free longevity. Its permanently locked, sealed screw joints ensure maintenance-free performance while preserving direct tone transmission between the instrument and hardware.
Engineered to standard instrument dimensions for effortless installation and replacement, each unit includes countersunk screw holes and mounting hardware suited for solid or slotted headstocks.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 18:1 |
| Configuration | Single Open-Gear Machine |
| Weight per Unit | 0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean) |
| Button Dimensions (Butterbean) | 0.80 x 0.54 x 0.41 in (20.4 x 13.8 x 10.4 mm) |
| Button Dimensions (Standard) | 0.69 x 0.54 x 0.24 in (17.6 x 13.7 x 6.1 mm) |
| Press-In Bushing Outer Diameter | 0.35 in (8.8 mm) |
| Press-In Bushing Inner Diameter | 0.24 in (6.1 mm) |
| Compatible Post Diameter | 0.24 in (6.0 mm) |
| Mounting Screws | 2 x Countersunk M2.2 x 11 mm per single tuner |
| Product Weight | 0.11 lb |
