Flexdeburr Installation and Operation Manual
Document: 9610-50-1007-11
Pinnacle Park
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1031 Goodworth Drive
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Apex, NC 27539
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Tel: 919.772.0115
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Fax: 919.772.8259
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www.ati-ia.com
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Email: [email protected]
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Install the spindle air supply fitting in the air motor using non-hardening thread
sealant.
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Insure that the spindle air supply fitting is centered in the housing (side boot) opening
before tightening the fastener in the pivot post.
5.3 Pivot Bearing Replacement
The pivot bearing allows articulation of the motor assembly. The pivot bearing is subject to
wear and should be replaced when excessive spindle motion is observed. Contact between the
motor air supply fitting and the main housing indicates pivot bearing wear which should be
corrected. To minimize possible downtime, the pivot bearing should be replaced any time the
air motor is replaced. Early Flexdeburr units can be identified by their lack of radial and axial
tapped holes for the pivot bearing keying dowel (see Figure 5.3). During maintenance of these
units the customer should replace the entire rear housing assembly to upgrade the deburring
tool. The early style of pivot bearing and rear housing are not currently supported.
The pivot bearing may be replaced in one of two ways. For quick repairs with minimal downtime
the user is encouraged to replace the entire rear housing assembly. When a spare unit can be
placed into service or downtime is not an issue a new pivot bearing can be installed in an
existing rear housing.
Refer to the steps below to replace the pivot bearing.
Rear Housing Assembly Replacement
1.
Remove the brass plug or hex socket screw from the center of the deburring unit's rear
housing.
2.
Remove the socket head screws securing the rear housing to the deburring tool's front
housing.
3.
Remove the rear cover complete with the pivot bearing. Retain the small o-ring and
dowel pin between the cover and housing for reuse if desired.
4.
The new rear housing assembly will be provided with new fasteners and a new o-ring.
Reassembly is the reversal of the previous steps with the following points:
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Insure the dowel pin and small o-ring that go between the housing and the rear cover
are in place before refitting the rear cover.
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Use liquid thread locker on all the socket head screws, but NOT on the brass pivot
post plug (where applicable).
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Insure that the spindle air supply fitting is centered in the housing (side boot) opening
prior to tightening the fastener in the pivot bearing post.
Pivot Bearing & Keying Dowel Replacement
(NOTE: Always replace the pivot bearing keying dowel when the bearing is replaced).
1.
Remove the rear housing assembly as described above.
2.
Remove the three socket head screws securing the pivot bearing in the center of the rear
housing.
3.
Remove the large clamping washer which rests on top of the pivot bearing.
4.
Locate and loosen the radially tapped bearing preload set screw in the rear housing.
5.
Locate the two set screws securing the pivot bearing keying dowel in the rear housing.
One will be radially tapped in the rear housing and the second will be axially tapped on
the rear mounting surface. Remove both screws.
6.
Use a small diameter magnet or a powerful magnet attached to the side of a hex key to
reach inside the keying dowel pin hole and remove the keying dowel pin from the rear
housing.
7.
With the dowel pin removed the old pivot bearing can be pressed from the rear housing.
8.
Reassembly is the reversal of the previous steps with the following points:
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Insure that the hole in the outer race of the new pivot bearing lines up with the radial
dowel pin hole in the rear housing and insert the pivot bearing in the rear housing
bore.