CTD D45AX, Инструкция по эксплуатации и руководство по техническому обслуживанию, Страница: 18 / 26

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D45X Spindle Assembly & Bearing Installation Instructions:
(refer to sketch on following page.)
It is suggested that replacement spindle assemblies be purchased from CTD before disassembling. Old spindles
can be returned for bearing replacement and slinger refacing for a nominal fee. The D45X spindle assembly
provides for a
slip-fit
between the outer races of the bearing and the housing or arm casting, and a
press-fit
between
the inner race and the spindle. Great care must be taken with ball bearings or the life of the bearing will be reduced.
Disconnect power and air supply to the machine.To remove the spindle assembly;
A. Remove belts
1. Twist belt inside out by hand while rotating forward over spindle pulley
2. Once belt is inside out, pull belt off while rotating around pulleys.
3. Repeat the same procedure for second belt. (Repeat Step No. 1 & 2.)
An alternative method is to loosen the motor.
B. Remove Spindle Pulley Nut, No. 9 by holding pulley.
C. Remove Pulley, No. 8 and place Pulley Nut, No. 9 back onto spindle to protect threads.
D. With a soft hammer or rubber mallet, gently drive spindle towards blade side. Take care to protect pivot
bearings by holding arm casting on blade side to overcome effects of hammer blows.
E. Remove Pulley Nut, No. 9 once again.
F. Spindle Assembly, consisting of Spindle No. 1, Slinger No.3, and Blade Bearing No. 4 will come out of
housing. Pulley bearing will slip out. If you have purchased a replacement spindle, go to item “L”.
G. If bearing on the blade side must be replaced, an arbor press must be used to disassemble the bearing and
the slinger from the spindle. Great care must be used in disassembling, or the spindle will be scored or
stripped by the slinger. Before pressing apart, scribe a line on the face of the spindle and the slinger so
that they will be reassembled in exactly the same position in relation to each other.
H. Press off slinger and bearing from spindle.
I. Press new bearing on to spindle, making sure spindle is square to the bore.
J. Replace slinger, as above, making sure scored lines match.
K. The face of the slinger must be checked to make sure the face (next to the blade) is running true. Using a
dial indicator, the slinger should have a maximum run-out of .001 total. If it is not in tolerance, it should be
refaced. To reface, partially assemble pulley bearing on spindle. Hold outer races of both bearings gently in
a vise. Use the side of a surface grinder wheel to dress the face of the slinger by rotating spindle in bearings
slowly against the direction of the grinding wheel.
L. Make sure that Belleville Springs, No. 6 are assembled in housing as shown in sketch. To reassemble
spindle assembly, slip blade bearing into housing up to the snap ring.
M. Slide pulley bearing onto the spindle as far as it will go.
N. Slide pulley onto shaft. This will allow you to use Pulley Nut, No. 9 to press bearing on. Tighten Pulley Nut
No. 9, pushing bearing onto spindle.
O. To replace belts, reverse procedure under section “A” above. If motor was moved, the centerline of the
motor shaft and the spindle must be parallel. Both pulleys must be in line or belts will not wear evenly.
This should be checked by placing a straight edge across both pulleys. Tighten motor.
P. Belt tension is of critical importance. To obtain proper tension, press down on top of belts with a
moderate amount of pressure. Belts should deflect approximately 1/4”.
Q. Tighten set screw in both pulleys. To check assembly after tightening belts, apply pressure in the
direction of the blade on the pulley nut. A slight spring pressure should be felt. If spindle does not
spring back, the belts may be too tight.