Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage aesthetics with precise tuning performance and velvet-smooth operation. Designed as an open-gear tuning machine with a classic worm gear mechanism, it delivers dependable functionality and authentic styling.
Featuring an ultra-precise 1:18 gear ratio, this tuning machine provides exceptional accuracy and long-term durability. The design avoids synthetic coatings to maintain natural resonance, while precision contact surfaces and permanently locked, sealed screw joints ensure smooth, wear-free performance without maintenance.
Engineered to standard instrument dimensions for straightforward installation or replacement, it includes countersunk screw holes for secure mounting and optimal acoustic transfer.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | GrandTune Einzelmechanik (GT-Single) |
| Gear Ratio | 1:18 |
| 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) 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 | 2 x countersunk mounting screws per single tuner (M2.2 x 11) |
| Counter Bearing | 1 x hexagonal press-in bushing per single tuner for solid headstocks, outer diameter 0.35 in (inner diameter 0.24 in, fits 0.24 in string post) |
| Slotted Headstock Note | Slotted headstock versions do not require and do not include bushings |
