FLENDER Standard Couplings - DS TECH

FLENDER Standard Couplings
Fluid Couplings — FLUDEX Series
General information
© Siemens AG 2011
Operation of the delay chamber
Off Starting Continuous operation
Starting torque can be reduced without increasing continuous
operating slip by using a type of coupling with a delay chamber.
On these couplings part of the oil filling is initially stored inactively
in the delay chamber. The starting torque is considerably
reduced because of the thus reduced starting filling in the working
chamber of the coupling. The filling in the delay chamber
runs very slowly, mostly only at the finish of the starting operation,
from the delay chamber into the working chamber, causing
the active filling in it to rise gradually and the continuous operating
slip to reach a value corresponding to the whole filling.
G_MD10_EN_00115
(450) 655-7447
info@pt-dstech.com
www.dstech.ca
■ Technical data
Balancing FLUDEX couplings
In deviation from the balancing specifications in catalog section
2, all FLUDEX couplings complying with DIN ISO 1940 are balanced
to balancing quality G6.3 for 1800 rpm. For operating
speeds higher than 1800 rpm micro-balancing, based on operating
speed, can be requested (order code +W03 required).
Balancing is a two-level balancing with the specified oil quantity
or a 75 % filling.
For the selection of the operating oil for low temperatures, attention
must be paid to a sufficient low freezing point of the oil and
his compatibility to sealing elements.
The temperature limits of the N-EUPEX add-on coupling are
shown in part 7 of this cataloge.
If other displacement couplings are combined with a FLUDEX coupling,
their respective temperature limits must be taken into account.
13
FLUDEX couplings are balanced in accordance with the half
parallel key standard. Other balancing standards must be specified
in the order, using the product code key (see catalog section
2).
Add-on couplings are subject to the standards as set out in catalog
section 2.
Oil filling
FLUDEX couplings can be delivered with or without oil filling.
• Delivery without oil filling:
without order code
• Delivery with oil filling:
product code with -Z and order code F16 and Y90 with plain
text specification of the oil filling quantity in liters.
• Delivery without oil filling but with oil filling quantity specification:
Product code with -Z and order code Y90 with plain text
specification of the oil filling quantity in liters.
Hollow shafts of the FA, FG and FV series
Variant of FLUDEX hollow shafts only with finished bore:
Order code for bore diameter is required.
Operating temperature range of FLUDEX couplings
Operating conditions for FLUDEX couplings in potentially
explosive environments
The coupling with fusible safety plugs with identity marking T3 is
suitable for the operating conditions set out in Directive 94/9/EC:
•Equipment group II (above-ground applications) temperature class
T3 of categories 2 and 3 for environments where there are potentially
explosive gas, vapors, mist and air mixtures and for environments
where dust can form potentially explosive atmospheres.
•Equipment group I (below-ground applications) of category M2
If used in potentially explosive environments under ground,
aluminum couplings must be provided with a robust enclosure
to preclude the risk of ignition caused by e.g. friction,
impact or friction sparks. The deposit of heavy-metal oxides
(rust) on the coupling housing must be prevented by
the enclosure or other suitable means.
FLUDEX couplings can be delivered with fitted brake disk
or V-belt pulley.
Designing the belt drive or the brake disk to conform with
the guidelines is the responsibility of the subassembly supplier.
It should be noted that there is a risk from, amongst
other things, electrostatic charges and hot surfaces.
Under BGR 132 (regulations of German Institute for Occupational
Safety) the use of V-belts in conjunction with IIC
gases is not permitted.
1275 Newton, local 15
Boucherville, Qc,
Canada, J4B 5H2
FLUDEX couplings are suitable for ambient temperatures of
between -40 °C and +40 °C.
For use at temperatures below -15 °C, FLUDEX couplings are
exclusively delivered with NBR seals (Perbunan).
For use at temperatures below -20 °C, FLUDEX couplings are
generally delivered without oil filling.
13/6 Siemens MD 10.1 · 2011