Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single combines refined vintage styling with ultra-precise tuning performance and exceptionally smooth action. Engineered with an open gear and worm design, it provides classic aesthetics while meeting the demands of modern instrument builders and players.
Featuring a precise 1:18 gear ratio, this tuning machine ensures lasting accuracy and stability without synthetic polymer coatings, allowing your instrument's natural resonance to shine through. The ultra-precise contact surfaces offer wear-free performance for optimal sound transmission and durability.
Engineered to standard instrument dimensions for straightforward replacement or new builds, the GrandTune Single includes countersunk screw holes and permanently sealed joints for maintenance-free reliability across a wide range of guitars.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Weight
0.11 lb
Unit Weight
0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean)
Button Dimensions
0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (Other Buttons)
Press-In Bushing Outer Diameter
0.35 in
Press-In Bushing Inner Diameter
0.24 in