Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune represents the ultimate fusion of vintage design, precise tuning, and smooth performance. Featuring a perfected classic open-gear construction with worm drive, it provides exceptional tuning stability and longevity without synthetic coatings, allowing your instrument to resonate naturally.
With a precise 1:18 gear ratio, this machine head offers wear-free operation and ultra-precise fits that ensure stick-slip-free movement over years of use. Permanently locked, sealed screw joints ensure completely maintenance-free functionality on standard factory-dimensioned guitar headstocks.
Countersunk screw holes deliver a secure fit and optimal resonance transfer. Each unit includes recessed mounting screws and a hexagonal press-in bushing for solid headstocks, engineered to uphold the highest standards of instrument craftsmanship.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Bushing Outer Diameter
0.35 in
Bushing Inner Diameter
0.24 in
Post Fitment Diameter
0.24 in
Weight per Single Unit
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 (W x H x D)
0.8 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Total Weight
0.11 lb