Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single is an open-gear guitar tuning machine designed to combine vintage aesthetics with ultra-precise tuning stability. Engineered with a 1:18 gear ratio, it provides smooth, velvety performance and pinpoint accuracy for acoustic, classical, or electric instruments.
Constructed without synthetic polymer coatings, this tuning machine features precision-fitted contact surfaces that ensure zero-wear operation and natural acoustic resonance. Its permanently locked and sealed screw joints deliver maintenance-free reliability throughout the life of your guitar.
Built to standard serially manufactured instrument dimensions, the GrandTune Single allows for straightforward installation and direct replacement. Countersunk screw holes ensure secure mounting and optimal acoustic coupling to the headstock.
Brand
Schaller
Model
GrandTune Einzelmechanik (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Button Dimensions (Butterbean)
0.80 x 0.54 x 0.41 in
Button Dimensions (Standard)
0.69 x 0.54 x 0.24 in
Weight per Single Tuner
0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean)
Included Bushing Outer Diameter
0.35 in
Included Bushing Inner Diameter
0.24 in
Mounting Screws Included
2x Countersunk screws (M2.2 x 11 mm)