Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune represents the ultimate fusion of vintage design, precise tuning, and smooth performance. Featuring a classic open-gear architecture with a worm gear mechanism, this tuning machine delivers exceptional tuning accuracy with its 1:18 gear ratio.
Crafted without synthetic polymer coatings, the GrandTune creates optimal stick-slip movement between high-precision contact surfaces for wear-free and resonant operation. Permanently locked, sealed, and covered screw joints ensure maintenance-free performance and exceptional longevity.
Designed to fit standard production instruments, it features countersunk screw holes for solid mounting and direct acoustic transfer. Each single tuner comes complete with mounting screws and standard press-in bushings for solid headstock installations.
Brand
Schaller
Model
GrandTune (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Configuration
Open Gear
Bushing Outer Diameter
0.35 in
Bushing Inner Diameter
0.24 in
Compatible Post Diameter
0.24 in
Mounting Screws Included
2x M2.2 x 11 mm per tuner
Weight per Tuner
0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean)
Butterbean Button Dimensions (W x H x D)
0.8 x 0.54 x 0.41 in
Standard Button Dimensions (W x H x D)
0.69 x 0.54 x 0.24 in