Schaller GrandTune Single Guitar Tuning Machine 10510170.44.12
The Schaller GrandTune combines refined vintage aesthetics with modern tuning precision and exceptionally smooth action. Designed with an open-gear architecture and precision worm gear mechanism, it delivers dependable performance and classic styling.
Featuring an 1:18 gear ratio, this tuning machine provides exact, velvet-smooth tuning and long-term tuning stability. Crafted without synthetic polymer coatings, it enables natural acoustic resonance while ensuring wear-free operation across years of play.
Permanently locked and sealed screw connections deliver zero-maintenance longevity, while countersunk screw holes provide rigid mechanical coupling and optimal acoustic energy transfer to the headstock.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Part Number / SKU | 10510170.44.12 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Design | Open Gear |
| 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 (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 Countersunk Screws (M2.2 x 11) |
| Press-In Bushing Outer Diameter | 0.35 in |
| Press-In Bushing Inner Diameter | 0.24 in |





















