Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single delivers a refined blend of vintage aesthetics, precision tuning, and ultra-smooth operation. Designed as an open-gear tuning machine, it features a 1:18 gear ratio that provides exact response and long-lasting durability.
Engineered without synthetic polymer coatings, the GrandTune creates optimal resonance and stick-slip friction resistance across metal contact points. Its permanently locked, sealed screw joints ensure zero-play performance without wear or maintenance over time.
Designed to fit standard production instruments, it features countersunk screw holes for enhanced acoustic coupling and secure attachment. It offers an ideal upgrade or replacement for acoustic, electric, and classical instruments.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Gear Ratio
1:18
Product Weight
0.11 lb
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)
Button Dimensions
0.8 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Mounting Hardware
2 countersunk mounting screws per single tuner (M2.2 x 11 mm)
Bushing Specifications
1 hexagonal press-in bushing per tuner, outer diameter 0.35 in (inner diameter 0.24 in)