CTD DM200R, Инструкция по эксплуатации и руководство по техническому обслуживанию

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400X Spindle Assembly and Bearing Installation Instructions:
Refer to Spindle Diagram on previous page.
Spindles are assembled using a foolproof, tamper-proof snap ring assembly. The preload belleville springs automatically
provide the exact bearing preload necessary for continued high performance and long life of the bearings. There are no
adjustments needed. The outer race of the bearings are a tight slip-fit in the housing of the arm. The inner race is a press fit
on the spindle. It is suggested that replacement spindle assemblies be purchased from CTD before disassembly. The old
spindles can be returned for bearing replacement and slinger facing for a nominal charge. If replacement spindle assemblies
are not on hand, a machine shop service must be available for replacement of spindle bearings. Read and understand the
following instructions before disassembly. Great care must be taken with ball bearings or the life of the bearing will be
reduced.
To Remove Spindle Assembly :
A. Remove Nut #8 by holding pulley bushing, and remove Pulley #11. In most cases, the 400X Spindle is
assembled using a split tapered bushing which compresses onto the shaft. This bushing is bolted to the
pulley with bolts usually located at #12. These bolts also act as jackscrews. By transferring them to the
tapped holes in the bushing, they will force the pulley off of the bushing—at which time both the pulley
and bushings may be removed from the spindle. Partially re-assemble nut to protect threads on spindle.
B. With soft hammer, 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.
C. Spindle Assembly, consisting of Spindle #1, Slinger #3, and Blade Bearing #4, will come out of housing.
Pulley bearing will slip out from pulley side. Normally it is the pulley side bearing that fails first.
If replacement Spindle Assembly was purchased, go to “G”.
D. If the bearing on the blade side must be replaced, an arbor press must be used to disassemble the bearing
and slinger from the spindle. Great care must be used in disassembly or the spindle will be scored and
stripped by the slinger. Before pressing apart, scribe a line on the face of the spindle and slinger so that
they will be re-assembled exactly in the same position in relation to each other.
E. Upon re-assembly of blade bearing and slinger, the face of the slinger must be checked to make sure the
face (next to the blade) is running true.
F. If face is not running true, it should be refaced. Partially assemble pulley bearing on spindle. Hold
outer races of both bearings in vice lightly and use side of a surface grinder wheel to dress face, by
rotating spindle in bearings slowly against direction of grinding wheel.
G. Be certain before re-assembly of spindle in arm that Springs #5 are assembled as in diagram. To re-
assemble spindle assembly, slip assembly consisting of Spindle #1, Slinger #3 and Bearing #4 into
arm housing up to snap ring.
H. Install Pulley Bearing #10 onto spindle as far as possible, then Spacer #9. Make sure Belleville Springs
are assembled properly.
I. Put Pulley Key #13 into shaft keyway.
J. Place Pulley #11 onto Bushing #12 and slide onto shaft. Install Nut #8.
K. Hold pulley bushing with pipe wrench and tighten nut which will press Bearing #10 onto shaft.
L. Install three bolts to pulley bushing located at #12 in diagram. Tighten evenly.
M. Belt tension is of critical importance . To get proper tension, press down on top of belts with a
moderate amount of pressure (five pounds). The belts should deflect about 1/2 inch.
N. If motor must be moved, centerline of shaft and 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.