Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune offers the ultimate combination of stylish vintage design, precise tuning accuracy, and velvet-smooth performance. Featuring a perfected open-gear architecture with a precision worm gear, its 1:18 gear ratio delivers unmatched tuning stability and longevity across all musical applications.
Crafted without synthetic polymer coatings, this tuning machine establishes a pure, resonant connection with the instrument wood. Ultra-precise contact surfaces ensure optimal stick-slip performance that remains completely wear-free over time, preserving tone and mechanical integrity.
Permanently locked and sealed screw joints provide maintenance-free operation. Standard production instrument dimensions and countersunk screw holes ensure effortless installation, optimal resonance transfer, and flawless performance on any compatible headstock.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Gear Type
Open Gear
Weight per Single Tuner
0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean) including bushing
Button Dimensions (W x H x D)
0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Mounting Screws
2 x M2.2 x 11 mm countersunk screws per tuner
Bushing Outer Diameter
0.35 in
Bushing Inner Diameter
0.24 in
Post Compatibility
0.24 in post diameter
Item Weight
0.11 lb