Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single is an open-gear guitar tuning machine that combines classic vintage styling with modern precision engineering. Featuring a 1:18 gear ratio, it provides smooth, accurate, and reliable tuning stability for your instrument.
Crafted without synthetic polymer coatings, the ultra-precise contact surfaces deliver superior stick-slip performance and uncompromised acoustic resonance. Permanently locked and sealed fittings ensure completely wear-free and maintenance-free operation over extended use.
Designed to fit standard instrument headstock dimensions for straightforward installation and replacement, this tuning machine includes countersunk screw holes to ensure firm anchoring and optimal tone transfer.
| Brand | Schaller |
| Model | GrandTune Einzelmechanik (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.6 oz (Koa), 0.7 oz (Perloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (Butterbean) including bushing |
| Button Dimensions (W x H x D) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Mounting Screws Included | 2x M2.2 x 11 mm per single tuner |
| Bushing Included | 1x hexagonal press-in bushing (0.35 in outer diameter, 0.24 in inner diameter for solid headstocks) |





















