Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune combines refined vintage aesthetics with modern engineering, featuring an open-gear design and a worm gear mechanism for velvet-smooth tuning performance. Built with a precise 1:18 gear ratio, it ensures exceptional tuning stability, accuracy, and durability across various playing styles.
Constructed without synthetic coatings, the ultra-precise contact surfaces allow natural resonance transfer and eliminate wear or aging. Permanently locked and sealed screw joints provide maintenance-free operation and long-lasting mechanical reliability on acoustic and electric instruments alike.
Designed to fit standard production instruments, it features countersunk screw holes and includes dedicated mounting hardware with a hexagonal press-in bushing for seamless installation and solid tone transmission.
Brand
Schaller
Product Type
Guitar Tuning Machine
Model
GrandTune Einzelmechanik (GT-Single)
Gear Ratio
1:18
Weight
0.1 lb
Button Dimensions
0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (Other Buttons)
Bushing Outer Diameter
0.35 in
Bushing Inner Diameter
0.24 in
String Roller Deluxe Bearing Diameter
0.39 in
String Roller Deluxe Post Diameter
0.39 in
Mounting Hardware Included
2 countersunk mounting screws (M2.2 x 11), 1 hexagonal press-in bushing