Schaller GrandTune Open Gear Tuning Machines (SLOTTED Headstock)

SKU: 10510123.42.20
PID: 21389127

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  • Regular price $ 150.00
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A perfected, classic tuning machine for guitars, as open-gear tuner.
Its 1:18 gear ratio offers unsurpassed precision and durability. The avoidance of synthetic coatings makes it a perfectly resonant unit on any instrument. With its wear-free interaction it will shine and sound as long as your finest guitars. Experience for yourself how sound quality, tuning stability and performance find unity in these machine heads.

Special features:

  • Their ultra-precise fits and contact surfaces, without polymer coating, produce perfect adhesive lubricity, free from wear or aging.
  • The mechanism provides permanently locked, sealed and sealed screw connections, for maintenance and wear free performance.
  • For the development, the common dimensions of series instruments were taken into account to guarantee trouble-free installation or replacement.
  • Gear ratio: 1:18, ensures exact and velvety tuning.
  • Weight single tuner: 18 g (button Koa), 19 g (Perloid), 20 g (Galalith, Ebony), 21 g (Snakewood), 25 g (Butterbean)
  • Button dimensions in mm (W × H × D): 20.4 × 13.8 × 10.4 mm (Butterbean), 17.6 × 13.7 × 6.1 mm all others

Specifications: 

  • Gear ratio: 1:18, ensures exact and velvety tuning.
  • Weight single tuner: 18 g (button Koa), 19 g (Perloid), 20 g (Galalith, Ebony), 21 g (Snakewood), 25 g (Butterbean)
  • Button dimensions in mm (W × H × D): 20.4 × 13.8 × 10.4 mm (Butterbean), 17.6 × 13.7 × 6.1 mm all others

Scope of supply:

  • 2 × mounting screws (each single tuner)
  • 1 × press-in bushing (each single tuner), hexagonal design, for mounting on solid headstocks, with outer diameter 8.8 mm, inner diameter 6.1 mm, suitable for 6.00 mm posts
  • Please note: Always use the original GrandTune bushings. The inner diameter is worked exactly for the 6 mm posts and gives the worm gear an exact alignment. Bushings with a larger inner diameter inevitably destroy the worm gear over time.