Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single is an open-gear guitar tuning machine designed to combine vintage styling with modern precision engineering. Featuring an open-gear configuration and worm gear drive, it delivers velvety-smooth performance and exceptional tuning stability without relying on synthetic polymer coatings.
Equipped with an 1:18 gear ratio, this tuning machine provides precise micro-tuning capabilities and long-term durability. The precision-machined contact surfaces offer wear-free interaction, allowing the tuning assembly to resonate freely with the instrument's headstock.
Built with permanently locked and sealed screw connections, the GrandTune Single guarantees maintenance-free performance while conforming to standard instrument dimensions for straightforward installation and replacement.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Gear Type
Open Gear
Weight per Single Tuner
0.6 oz (Koa), 0.7 oz (Perloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (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)
Bushing Outer Diameter
0.35 in
Bushing Inner Diameter
0.24 in
Mounting Screws
M2.2 x 11 mm
Product Weight
0.67 lb