Gilbert rollers are made from Delrin, a super tough, low friction
plastic that turns exceptionally smoothly and silently against the
wood of a head stock, so bushings or bearings at the ends of the
rollers are unnecessary.
In terms of quality, function, and feel, Gilbert tuners are second to
none.What makes their design unique are the black worm gear retainer
pieces fastened with screws onto the base plates. These pieces enable
the classical
guitar tuners to have absolutely no backlash,
an amazingly smooth response when tuning, and a perfectly uniform
resistance on all of the knobs. After several years of use, if the
moving parts of classical
guitar machine heads have worn a little,
the black worm retainers can be readjusted to take care of any
backlash, and to equalize the resistance on all of the knobs. To
avoid damaging the small screw threads or black retainer pieces, this
adjustment should only be made by the manufacturer.See more
information visit : Guitar
machine heads
