Deluxe KeyStone Guitar Tuning Machines, 1:18 Gear Ratio

Original Deluxe KeyStone with new 1:18 gear ratio

Most common tuning pegs feature a lower gear ratio of 1:14 or 1:16, which was a standard for a long time. The introduction of the 1:18 ratio in our Schaller GrandTune and improved M6 series, has now also found its way into the classic Original Deluxe KeyStone. The higher gear ratio of 1:18 ensures a precise and velvety smooth tuning process. An investment in your guitar to improve tuning accuracy that should not be underestimated.

• They feature vintage original specs along with that classic look and feel: designed to match contemporary as well as historic guitar styles.
• Replacement machine head with 2-screws and a banjo bolt as counterfort.
• Available in single-ring (SR) and double-ring versions (DR).
• All sealed tuners are lubricated with Schaller special grease for lifetime maintenance-free service.
• All parts are precision-crafted and surface-finished, the self-locking drive ensures an even, delicate and steady tuning.
• All string posts are made of high-grade brass and fitted into the housing with utmost precision, ensuring the best possible tuning accuracy and wear resistance.

• Gear to the button made of brightly polished stainless steel so that the gear drive runs better and longer.

Instructions for toplocking screw:

• Unscrew the knurled screw on the adjusting axis anti-clockwise until the clamping ball comes off.
• Now press the strings against the clamping ball. Under pressure, it recedes. You can now put the guitar string through the adjusting axis.
• Screw the knurled screw clockwise until it is hand tight. The string is now secured by the clamping ball.
• Now you can tune your strings.
• Now featuring a metric thread and a specially developed screw locking device, so you don`t lose the screw anymore!
• When loosening the screws, turn them anticlockwise until the string is tightened into position.
• When removing the connecing screws completely  from the shafts, simply take the connecting screw out of the shaft at threshold resistance. 
• The Schaller Toplocking with fine pitch thread and pull-off locking screw.
• Fine Pitch Thread for better locking adjustment.
• Our new Toplocking screw with fine pitch thread allows the screw to be turned more precisely and the locking torque to be adjusted more accurately.
• New pull-off mechanism that makes pulling off as easy as putting back on
• To prevent the toplocking screw from coming off and getting lost in the process of string changing we designed a new mechanism keeping the loosened screw in place even when it is completely unfastened.
• To remove the Toplocking screw entirely from the string post just pull it off firmly. To put the screw back on just turn clockwise and tighten lightly.

Technical specifications:

• Gear ratio: 1:18
• Post-lenghts: 19.7, 21.7, 23.7 mm and TopLocking with 19.7 mm  
• Weight: 32 gram (DR/Toplocking), 31 gram (SR/Toplocking), 29 gram (DR, solid 21,7), 28 gram (SR/solid 21,7) per single tuner including threaded bushing