Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune combines refined vintage aesthetics with precise tuning performance and velvet-smooth operation. Designed as a perfected open-gear tuning machine, it features an exposed gear and worm drive engineered for enduring stability and resonance.
A precise 1:18 gear ratio delivers fine tuning control and extended durability. Crafted without synthetic polymer coatings, the ultra-precise contact surfaces provide optimal stick-slip performance while allowing the instrument's headstock to resonate naturally without wear or acoustic dampening.
Built with permanently locked and sealed screw joints, this tuning machine provides maintenance-free operation over long-term use. Standardized dimensions allow straightforward installation or retrofitting across conventional instrument headstocks.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Gear Ratio
1:18
Design
Open-Gear
Button Dimensions
0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (Other Buttons)
Weight
0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean)
Mounting Hardware Included
2 x Countersunk Screws (M2.2 x 11), 1 x Press-In Bushing (Solid Headstock)