Instruction Manual
Section Four
tightening screw and handwheel (4) Photo 6 is used to move the
motor relative to the spindle for installing and tightening the belt
Always leave enough slack in the belt tension so that the belt can
be depressed to a depth of ⅜ to ½ inch between the two pulleys on
one side. Use the edge of the wheel guard as a straight edge be-
tween the periphery of the two pulleys. Mount the V-groove pulleys
with the hub flanges on the same side Check the alignment of the
pulley grooves by running a straight edge between the two pulley
sides. To make adjustments, move the spindle relative to the spindle
bracket housing by loosening hex socket screws (2) Photo 6.
WARNING: Do not over tighten these spindle bracket screws, as
damage to the spindle bearings may result. Tighten these screws
until the spindle cannot be made to slip or rotate in the bracket
housing by hand pressure.
(b) Grinding Head Swivels: The lower swivel adjustment (6) Photo 6 is
the same as that described for the models in D-1 above. The upper
swivel on the universal head is movable when special nut (1) Photo
6 is loosened with the B855W machine wrench, The upper swivel
allows the spindle bracket housing (THUS SPINDLE AND MOTOR)
to swivel 350 degrees relative to the dovetail slide in the horizontal
plane.
(c) Dovetail Extension: The universal head is made with a dovetail slide
(13) Photo 4 which allows the movement of the spindle relative to
the column (IN ANY DIRECTION OF THE WHEELHEAD SWIVEL)
up to 6 inches. With the slide all the way to the rear of the ma-
chine, the center-line of the spindle is approximately in the vertical
plane of the edge of the column. Movement is by hand pressure
upon loosening of the two handle lock screws (8) Photo 6.
(d) Spindles and Wheel Mounting:
i. High Speed for Standard Universal Grinders with B955 Head:
The B6055B cartridge spindle (Photo 8) has a normal speed range
of 3450 to 18,400 R.P.M. Mount belt pulleys as shown in
Photo 8 at the right of the spindle. Mount the spacer washer
first, then the pulley, and then the keyed wheel flange and nut.
Use the B628 Wrench while holding the pulley by hand or holding
the shaft stationary with the B936W Spanner Wrench.
The B855F pulley and wheel arbor shown in Photo 8 attaches to
the internal taper lock at the left end of the spindle by means of
its inner hex socket screw. Always clean the taper surface prior
to mounting arbors. The S894 Hex Wrench is used for tighten-
ing this screw while the spindle shaft is held at the right end by
an open-end wrench. Using the B628 wrench, the arbor nut, and
keyed flange, any ⅝ inch bore diameter wheel can be mounted on
the arbor. Mount straight wheels of no larger diameter than
5 INCHES on this arbor. See Part I of this section for safety pre-
cautions when wheels are being mounted. NOTE: It is also pos-
sible to mount wheels at the right end of this spindle while using
the B855F arbor to hold the pulley, so that the motor can drive
the spindle from the left end. This makes it possible to mount
a wheel further away from the machine column without revers-
ing the spindle in the spindle housing bracket.
—13—
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