STONES-
Seat grind-
ing stones are general purpose stones with 9/16"-16
thread steel inserts. Use the same stone for roughing
and finishing cast iron, soft and alloy valve seats. (For
rapid roughing of Stellite faced valve seats,
use special 9/16"-16 thread insert stones). Diameter,
angle, catalog number and bushing thread size appear
on stone blotter.
CAUTION: Never use stones rated under 12,000 RPM.
STONE SLEEVES-
Any of the four auto-
motive stone sleeves
will fit any of the automotive
seat grinding stones
. All have 9/16"-16 threads.
contains a
The upper end of all stone sleeves
hexagon socket (except fig. B which can also be had
with a spline socket to receive a splined driver) which
forms a universal joint with hex-ball end of the driver
spindle.
The standard and short standard stone sleeves
have long bronze bushings accurately reamed to fit
the upper shank of all pilots.
The ball-bearing stone sleeve
minimizes wear
and preserves accuracy for longer periods by incor-
porating ball-bearing races between inner and outer
sleeves. The inner sleeve is held on the
pilot by a retainer ball fitting in the pilot
groove and does not revolve with the outer sleeve
which carriers the stone.
VALVE STONE DRESSING
STAND-Cat.
No.
57646
accurately and
The valve stone dressing stand
safely cleans and trims all sizes and angles of
stones up to 6" diameter. Equip-
ped with an accurate diamond feed, a horizontal
adjustment for various stone sizes, and an angle
indicator marked from 0 to 90 in 1 steps
with numbers at 15, 30, 45 and 90 for the
most common angle settings. Stand is complete
with a diamond nib and a stone sleeve mandrel.
Rugged cast iron base for extra strength.
5