Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single Guitar Tuning Machine combines classic open-gear aesthetics with modern precision engineering. Built with an open gear and worm shaft configuration, it delivers ultra-smooth rotation and exceptional tuning stability without the use of synthetic polymer coatings.
Featuring an exact 1:18 gear ratio, this tuning machine provides nuanced control and outstanding mechanical longevity. Its precision-fitted components and permanently sealed joints ensure wear-free and maintenance-free performance, vibrating naturally with the instrument to enhance acoustic resonance.
Designed to fit standard instrument specifications, this tuner allows straightforward installation or replacement on solid and slotted headstocks. Countersunk mounting holes provide rigid coupling and direct tonal transfer to the headstock.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Weight per Single Tuner
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 (WxHxD)
0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Included Hardware
2 mounting screws (M2.2 x 11), 1 hexagonal press-in bushing (for solid headstock versions)