Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single delivers the ultimate combination of vintage aesthetic design, precise tuning accuracy, and velvet-smooth performance. Built with an open-gear architecture and precision worm gear, it delivers an ultra-exact 1:18 gear ratio for superior stability and long-lasting durability across acoustic and electric instruments.
Crafted without synthetic polymer coatings, this tuning machine features ultra-precise contact surfaces that provide flawless stick-slip action without wear or aging. Permanently locked, sealed screw joints ensure completely maintenance-free operation while recessed screw holes provide firm mounting and optimal acoustic resonance transfer.
Designed around standard production instrument dimensions for straightforward installation and replacement, each unit includes mounting screws and a hexagonal press-in bushing for solid headstocks. Its robust construction ensures optimal sound transmission and friction-free performance across diverse playing styles.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Included Bushing Outer Diameter
0.35 in
Included Bushing Inner Diameter
0.24 in
Mounting Screw Dimensions
M2.2 x 0.43 in
Weight per Machine (Butterbean)
0.06 lb
Weight per Machine (Ebony/Galalith)
0.04 lb
Weight per Machine (Koa)
0.04 lb
Weight per Machine (Perloid)
0.04 lb
Weight per Machine (Snakewood)
0.05 lb
Button Dimensions (Butterbean)
0.8 x 0.54 x 0.41 in
Button Dimensions (Standard)
0.69 x 0.54 x 0.24 in