Maintenance
Maintenance intervals
Cardan shafts are used in a great variety of industrial
plants with very different operating coditions.
We recommend inspections at regular intervals and, it
possible, to coordinate it with maintenance work on other
parts of the equipment. However maintenance work should
be carried out once a year at least.
Inspection
 Check the flange bolts for tightness and
retighten them with the
prescribed torque (see
Flange boltings).
Backlash inspection. By lifting the joints
and the length compensatian check
the visible or tangible backlash.
Check the cardan shaft for any unusual noise, vibration
or abnormal behaviour and repair the damage, if any.
Lubrication
DANA cardan shafts are lubricated with grease and ready
for installation.
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For the
re-lubrication of cardan shafts use a standard
grease acc. To STD 4006-000 as for example a
lithium
complex grease of the following
specification only: DIN 51502 acc. To DIN
51818-KP2N-20.
Do not use grease with molycote additives!
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Clean the grease
nipples before relubricating. |
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Do not grease
with too high pressure or hard jerks.
Max. permissible lubricating pressure 15 bar (15
x 10 Pa). |
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Cardan shafts
that have been stored for more than 6 months must
be regreased before use. |
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When cleaning
cardan shafts, do not use aggressive chemical
detergents or pressurized water or steam jets
because the seals may be damaged and dirt or
water may penetrate. After a cleaning the cardan
shaft must be regreased until the grease escapes
out from the seals. |
Journal cross assemblies
The journal cross assemblies may be relubricated via a
conical grease nipple (DIN 71412) located in the middle
of the cross or at the bottom of the bush.
| Central
lubrication |
Bush
lubrication |
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 |
The seals of the journal
cross bearings must be lubricated until the grease passes
through from the seals of the bearings.
Cardan shafts of the series 498 (in special cases also
the series 390, 392, 393, 492) must be lubricated via a
fIat grease nipple according to DIN 3404. The illustrated
adapter pipe can be used as adapter between a conical
grease nipple at the cardan shaft (acc. to DIN 71412) and
a flat grease nipple connection at the grease pump (see
illustration).
| Order
No.: |
86 05 006 ( 90 mm
length)
86 05 025 (300 mm length) |
Length compensation
The length compensation of the standard version of the
serie 687 is maintenance-free. The length compensation of
the series 390, 392, 393, 492, 190 and 587.50/.55/.60 as
weIl as special designs of the serie 687 is lubricated
via a combined grease and air-relief valve with a conical
grease nipple according to DIN 71472.
The length compensation of the series 498 is lubricated
via a flat grease nipple according to DIN 3404.
Grease and air-relief valves must not be
removed or replaced by standard
grease nipples.
Protection caps should be removed from the
grease nipples before operation.
Relubricating should be done at the shortest
compressed length Lz of the shaft.
Recommended regreasing intervals
We recommend the following inspection and regreasing
intervals.
| Series |
Regreasing intervals |
| Joints |
Length
compensation |
| 587 |
6
month |
6
month 1) |
| 687 |
6
month |
maintenance-free
12 month 1) |
| 190 |
6
month |
6
month |
| 390 |
6
month |
6
month |
| 392
/ 393 |
6
month |
6
month |
| 498
/ 492 |
3
month |
3
month |
1) for greasable length compensation
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Unfavourable
effects like temperature, dirt and water may
necessitate shorter lubricating intervals.
Principally we recommend adapting the lubricating
intervals to the individual operating conditions.
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For cardan shafts
with plastic-coated splines (on request) the
relubricating intervals may be extended,
dependent on the application, to 12 month. |
Repair
For safety reasons, cardan shafts should only be repaired
by DANA or by DANA-approved repair shops.
The repair of cardan shafts is carried in a professional
manner by our cardan shaft service experts. The shafts
are overhauled with original spare parts. The repair of
cardan shafts by the user should only be made in
emergency cases and only for such equipment where the
operating speed of the shaft does not exceed 500 rpm. If
the speed exceeds 500 rpm, the cardan shaft must be
rebalanced.
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If journal cross
assemblies are to be replaced, we recommend also
to replace the bearing cap screws of shafts of
the series with split yokes. Observe our
installation and repair instructions. please
contact us. |
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DANA
Industrial Drive Shafts Catalogue