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 Anti-static / flameproof couplings
ATEX certificated
to Directive: 94/9/EC II2GD-IM2-T6
Harmonised standards: EN13463-4, EN13463-5, EN50303, EN13463-1 |
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ATEX compliant
'JXL' torsionally resilient couplings, of pin and bush design,
comprise two fully machined steel flanges which are coupled via
a series of drive pins and 'hytrel' flexible elements. The elements
have the ability to absorb shock loads and dampen vibration.
The couplings
do not
produce static
and do
not sustain burning.
Maximum shaft diameters up to 400mm with torques of 300,000Nm
and speeds upto 11,000rpm can be accommodated.
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The JXL range of resilient couplings is able
to accept angular, radial and axial misalignment, they are torsionally
resilient, non-lubricating and capable of operating between temperatures
of –50°C and +105 °C.
The elements are flame resistant, anti-static and have NCB acceptance
for use underground in coal mines number A2032.
All JXL couplings are capable of accepting a momentary overload
of twice nominal torque. ATEX certificate |
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Couplings are
selected (see selection
notes)
on their ability to transmit torque between rotating shafts,
with restricting factors being maximum speed and shaft diameter.
Torque
in Nm (Newton metres) = Power (Kw) X 9550
Speed
(RPM)
Example
18.5 kW at 1500 rpm = 18.5 x 9550 = 117.783 Nm
1500
Calculate the
torque to be transmitted, determine the required service factor
with reference to the duty factor chart, multiply the relevant
duty factors together to give the required service factor, multiply
the calculated torque by this factor to give the required coupling
rating.
Select the coupling size with reference to the continuous value,
taking into account the bore diameters required.
Selection Notes for
JXL Couplings & Cast Iron Bellhousings
This is intended as a guide for the selection of bellhousings
and couplings for the use in hazardous areas.
» Consider motor power
and speed against coupling nominal torque.
If the resilient bushes fail, metal-to-metal contact could occur,
in order to minimise the risk of this situation, we recommend
that the end user carry out periodic inspection of the coupling
assembly with particular attention being applied to the resilient
bushes. This can be further enhanced by the application of a
large service factor to the coupling at the selection stage.
By the nature of the design of JXL couplings, a large service
factor is easy to achieve, as a general rule, a full compliment
of resilient bushes with each coupling selection will naturally
give a high service factor.
» Consider the site of
the housing and coupling assembly.
If the assembly is to be positioned in an inaccessible area where
periodic inspection will be difficult to achieve or may be ‘overlooked’
a high service factor will be very desirable, in many cases the
provision of a dia 50mm inspection hole in the bellhousing will
save time when inspecting the coupling.
» Consider coupling clearance.
When selecting JXL couplings for use inside bellhousings, consideration
must be given to clearances between rotating and non-rotating
parts, based on BSI 9-2000 EN50019: 2000-173, we recommend that
this clearance be a minimum of 5.0 mm in all cases, however the
standard this information is derived from advises that clearance
shall be 1/100 of the maximum diameter (rotating component),
but in no case shall the clearance be less than 1.0mm, reference
to this could be used in special circumstances, however it is
envisaged that 5.0mm should be possible in all cases.
» Consider vertical mounting.
JXL coupling hubs are machined with an additional grub screw
at 90 degrees to the grub screw over the key slot, this is to
provide additional security against the hubs creeping down one
or other shaft when mounted vertically, we strongly recommend
the use of this additional grub screw in vertical installations,
however, if the additional grub screw is not to be used, it must
be removed from the coupling hub and an alternate method sought,
eg pinning of shaft keys, spacers or clamp design hubs.
» Consider mining applications.
In mining applications, it is not permitted to allow dust to
enter equipment supplied, therefore any inspection holes in bellhousings
must be fitted with solid covers.
» Consider pump removal.
GGR bellhousings will be fitted with a centring to enable the
pump to be removed without removal of the coupling hub from the
pump shaft as standard, where the centring will not interfere
with the pump fixing holes. In instances where the diameter of
the centring would interfere with the pump fixing holes, provision
of a removable pump face on the bellhousing may be required in
order to assist with pump removal.
This should be requested at time of quotation.
Prime Mover
Factor
|
|
Gas
or Oil Engine |
|
Motor
or Turbine |
Steam
Engine Water Turbine |
1 or
3 Cylinders |
2 or
4 Cylinders |
|
1.00 |
1.25 |
2.00 |
1.50 |
Duty Factors (reversing factor
1.25)
|
Duty
Factor |
|
Duty
Factor |
| Cranes
& Hoists |
|
Agitators |
|
| Main
Hoist |
2.5 |
Vertical & Horizontal Screw, Propeller,
Paddle |
1 |
| Skip
Hoist |
2.5 |
Blowers |
|
| Slope |
2 |
Centrifugal |
0.75 |
| Bridge,
Travel or Trolley |
2 |
Lobe or Vane |
1.25 |
| Dynamometer |
1 |
Clarifier or Classifier |
1 |
| Elevators |
|
Compressors |
|
| Bucket,
Centrifugal Discharge |
1.25 |
Centrifugal |
0.75 |
| Freight
or Passenger |
2 |
Lobe or Rotary |
1.25 |
| Gravity
Discharge |
1.25 |
Reciprocating with Flywheel & Gear
between Compressor & Prime Mover |
|
| Escalators |
1 |
1 cylinder, single acting |
3 |
| Exciter,
Generator |
1 |
1 cylinder, double acting |
3 |
| Extruder,
Plastic Fans |
|
2 cylinders, single acting |
3 |
| Centrifugal |
0.75 |
2 cylinders, double acting |
3 |
| Cooling
Tower |
2 |
3 cylinders, single acting |
3 |
| Forced
Draught -Across the Line start |
1.5 |
3 cylinders, double acting |
2 |
| Forced
Draught Motor Driven through fluid or electric slip clutch |
1 |
4 or more cylinders, single acting |
1.75 |
| Gas
Recirculating |
1.5 |
4 or more cylinders, double acting |
1.75 |
| Induced
Draught with Damper Control or Blade Cleaner |
1.25 |
Conveyors |
|
| Induced
Draught without Controls |
2 |
Apron, Assembly, Belt, Chain, Flight,
Screw |
1 |
| Mine
Ventilation -Surface |
2 |
Bucket |
1.25 |
| Mine
Ventilation -Underground |
2.5 |
Live Roll, Shaker & Reciprocating |
3 |
| Mixers
(See Agitators) |
|
Feeders |
|
| Concrete |
1.75 |
Apron, Belt, Disc, Screw |
1 |
| Muller |
1.5 |
Reciprocating |
2.5 |
| Press,
Printing |
1.5 |
Generators |
|
| Pug
Mill |
1.75 |
Even Load |
0.75 |
| Pulverizers |
|
Hoist or Railway Service |
1.5 |
| Hammermill |
1.75 |
Welder Load |
2 |
| Hog |
1.75 |
Hammermill |
1.75 |
| Roller |
1.5 |
Laundry Washer or Tumbler |
2 |
| Pumps |
|
Line Shafts |
|
| Centrifugal |
0.75 |
Any processing Machinery |
1.5 |
| Descaling,
with Accumulators |
1.25 |
Machine Tools |
|
| Gear,
Rotary or Vane |
1.25 |
Auxilliary Drive |
1 |
| Reciprocating |
|
Bending Roll, Notching Press, Punch
Press, Planer, Plate Reversing |
1.75 |
| 1
cylinder, single or double acting |
2 |
Main Drive |
1.5 |
| 2
cylinder, single acting |
2 |
Traverse Drive |
1 |
| 2
cylinder, double acting |
1.75 |
Metal Forming Machines |
|
| 3
or more cylinders |
1.5 |
Draw Bench Carriage & Main Drive |
2 |
| Screens |
|
Extruder |
2 |
| Air
Washing |
1 |
Forming Machine & Forming Mills |
2 |
| Grizzly |
2 |
Slitters |
1 |
| Rotary
Coal or Sand |
1.5 |
Wire Drawing or Flattening |
1.75 |
| Vibrating |
2.5 |
Wire Winder |
1.5 |
| Water |
1 |
Coilers & Uncoilers |
1.5 |
| Woodworking
Machinery |
1 |
|
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Technical Data for the JXL anti-static
/ flameproof ATEX coupling range
| Type |
Number of Pins |
Torque Nm. |
Maximum Power Kw |
Maximum Speed RPM |
| Cont. |
Max. |
|
JXL
25 |
2 |
23.88 |
47.74 |
55.00 |
11,000 |
| 4 |
47.75 |
95.50 |
110.00 |
| 6 |
71.63 |
143.20 |
164.94 |
| 8 |
95.50 |
191.00 |
220.00 |
|
JXL
32 |
3 |
40.59 |
81.18 |
82.46 |
9700 |
| 6 |
81.18 |
162.35 |
164.90 |
| 9 |
121.76 |
243.53 |
247.36 |
| 12 |
162.35 |
324.70 |
329.80 |
|
JXL 42 |
3 |
104.57 |
209.15 |
166.44 |
7600 |
| 6 |
209.15 |
418.29 |
332.88 |
| 9 |
313.72 |
627.44 |
499.32 |
| 12 |
418.29 |
836.58 |
665.76 |
|
JXL 55 |
3 |
122.24 |
244.48 |
166.40 |
6500 |
| 6 |
244.48 |
488.96 |
332.80 |
| 9 |
366.72 |
733.44 |
499.20 |
| 12 |
488.96 |
977.92 |
665.60 |
|
JXL 65 |
4 |
184.79 |
369.59 |
224.46 |
5800 |
| 8 |
370.06 |
740.13 |
449.50 |
| 12 |
554.86 |
1109.71 |
673.96 |
| 16 |
740.13 |
1480.25 |
899.00 |
|
JXL 80 |
4 |
371.97 |
743.95 |
366.13 |
4700 |
| 8 |
743.95 |
1487.89 |
732.26 |
| 12 |
1115.92 |
2231.84 |
1098.39 |
| 16 |
1487.89 |
2975.78 |
1464.52 |
|
JXL 90 |
4 |
774.03 |
1548.06 |
664.61 |
4100 |
| 8 |
1548.06 |
3096.11 |
1329.22 |
| 12 |
2322.08 |
4644.17 |
1993.83 |
| 16 |
3096.11 |
6192.22 |
2658.44 |
|
JXL 100 |
4 |
1074.38 |
2148.75 |
832.50 |
3700 |
| 8 |
2148.75 |
4297.50 |
1665.00 |
| 12 |
3223.13 |
6446.25 |
2497.50 |
| 16 |
4297.50 |
8596.00 |
3330.00 |
|
JXL 120 |
4 |
1504.13 |
3008.25 |
1039.50 |
3300 |
| 8 |
3008.25 |
6016.50 |
2097.00 |
| 12 |
4512.38 |
9024.75 |
3118.50 |
| 16 |
6016.50 |
12033.0 |
4158.00 |
| Type |
Number of Pins |
Cont. |
Max. |
Maximum Power Kw |
Maximum Speed RPM |
| Torque Nm. |
|
|
| Type |
Number of Pins |
Torque Nm. |
Maximum Power Kw |
Maximum Speed RPM |
| Cont. |
Max. |
|
JXL 148 |
4 |
2912.75 |
5825.50 |
15886.00 |
2600 |
| 8 |
5825.50 |
11651.00 |
3172.00 |
| 12 |
8738.25 |
17476.50 |
4758.00 |
| 16 |
11651.00 |
13302.00 |
6344.00 |
|
JXL 160 |
4 |
3127.63 |
6255.25 |
1637.50 |
2500 |
| 8 |
6255.25 |
12510.50 |
3275.00 |
| 12 |
9259.00 |
18718.00 |
4900.00 |
| 16 |
12510.50 |
250021.00 |
6550.00 |
|
JXL 170 |
4 |
4655.63 |
9311.25 |
1852.50 |
1900 |
| 8 |
9311.25 |
18622.50 |
3705.00 |
| 12 |
13966.88 |
27933.75 |
5557.50 |
| 16 |
18622.50 |
37245.00 |
7410.00 |
|
JXL 190 |
4 |
7401.25 |
14802.50 |
2790.00 |
1800 |
| 8 |
14802.50 |
29605.00 |
5580.00 |
| 12 |
22203.75 |
44407.50 |
8370.00 |
| 16 |
29605.00 |
59210.00 |
11160.00 |
|
JXL 210 |
4 |
8595.00 |
17190.00 |
2880.00 |
1600 |
| 8 |
17190.00 |
34380.00 |
5760.00 |
| 12 |
25785.00 |
51570.00 |
8640.00 |
| 16 |
3438.00 |
68760.00 |
11520.00 |
|
JXL 240 |
4 |
15518.75 |
31037.50 |
4550.00 |
1400 |
| 8 |
31037.50 |
62075.00 |
9100.00 |
| 12 |
46556.25 |
93112.50 |
13650.00 |
| 16 |
62075.00 |
124150.00 |
18200.00 |
|
JXL 270 |
4 |
19338.75 |
38677.50 |
4860.00 |
1200 |
| 8 |
38677.50 |
77355.00 |
9720.00 |
| 12 |
58016.25 |
116032.00 |
14579.94 |
| 16 |
77355.00 |
154710.00 |
19440.00 |
|
JXL 300 |
5 |
26453.50 |
52907.00 |
5540.00 |
1000 |
| 10 |
52907.00 |
105814.00 |
11080.00 |
| 15 |
79398.70 |
158797.40 |
16628.00 |
| 20 |
105909.50 |
211819.00 |
22180.00 |
|
JXL 340 |
6 |
38677.50 |
77355.00 |
7290.00 |
900 |
| 12 |
77355.00 |
154710.00 |
14580.00 |
| 18 |
116032.50 |
232065.00 |
21870.00 |
| 24 |
154710.00 |
309420.00 |
29160.00 |
| Type |
Number of Pins |
Cont. |
Max. |
Maximum Power Kw |
Maximum Speed RPM |
| Torque Nm. |
|
JXL coupling
installation
when
a bellhousing is not used.
This guide is for the installation of JXL couplings when a bellhousing
is not used and covers the assembly of the coupling individual
components.
Ensure each flange is clean. Fit each flange to their respective
shafts. Line-up coupling flanges by checking dimensions between
flange faces at 90°
intervals and by using a straight edge across the outside diameter
of flanges at 90° intervals. If possible a dial test indicator
may be used to give accurate details of alignment. The flanges
should be aligned to within the following tolerances noting that
where one misalignment is present then the others must be reduced
proportionally. Careful alignment will extend coupling life.
Parallel
Misalignment
JXL 25
JXL 32 |
JXL 42
JXL 65 |
JXL 80
JXL 120 |
JXL 148
JXL 160 |
JXL 170
JXL 240 |
JXL 270
JXL 340 |
|
0.12 |
0.25 |
0.37 |
0.50 |
0.62 |
0.72 |
Angular Misalignment
All
couplings, plus or minus 0.375° per hub maximum, 0.75°
total.
Axial
Misalignment
All
couplings, plus or minus 50% of flange gap (dimension 'C' below)
When the coupling
hubs are within the correct alignment fit the coupling pins,
liners and resilient elements ensuring that each pin assembly
has three
washers fitted; one under the cap screw head and one at either
end of the element. The pins should be fitted with the self locking
nut adjacent to the resilient element. Where half or less number
of pin assemblies are being used, all elements should be fitted
into one flange. When all pin assemblies are fitted tighten the
self locking nuts in pairs at 180° to each other to the correct
torque.
Tightening
torques for the jbj 'JXL' resilient couplings maintenance
|
Coupling Size |
Screw Size |
Tightening Torque |
Coupling Size |
Screw Size |
Tightening Torque |
|
Nm |
lb/ft |
Nm |
lb/ft |
|
25 » |
M5 |
5.08 |
3.75 |
148 » |
M16 |
187 |
138 |
|
32 » |
M5 |
5.08 |
3.75 |
160 » |
M16 |
187 |
138 |
|
42 » |
M6 |
9.20 |
6.80 |
170 » |
M16 |
187 |
138 |
|
55 » |
M6 |
9.20 |
6.80 |
190 » |
M20 |
337 |
249 |
|
65 » |
M6 |
9.20 |
6.80 |
210 » |
M20 |
337 |
249 |
|
80 » |
M10 |
41.00 |
30.00 |
240 » |
M24 |
568 |
419 |
|
90 » |
M10 |
41.00 |
30.00 |
270 » |
M30 |
1144 |
835 |
|
100 » |
M12 |
77.00 |
57.00 |
300 » |
M30 |
1144 |
835 |
|
120 » |
M12 |
77.00 |
57.00 |
340 » |
M30 |
1144 |
835 |
Periodically check flange alignment and resilient elements for
wear.
Note
JXL couplings are capable of accepting a momentary overload of
twice nominal torque and have an operating temperature range
of -50°C to +105°C.
JXL coupling
installation
when
a bellhousing is used.
This guide is for the installation of JXL couplings when a bellhousing
is used.
Coupling pins are tightened to the correct torque prior to leaving
our premises; these values should be re-checked prior to installation.
Under no circumstances should the couplings be assembled with
the pins tightened to any torque other than the specified values.
Fit the relevant coupling hub onto the motor shaft. As a general
rule the face of the coupling flange will be flush with the end
of the motor shaft with
any necessary offset being applied to the hub fitted to the pump
shaft. In any case the correct setting distance must be maintained,
tighten grub
screw(s) and re-check the setting distance.
Fit the pump centring to the pump (when supplied) then fit the
relevant coupling hub to the pump shaft, position the hub suitably
to obtain the correct setting distance, tighten grub screw(s)
or clamp screw(s) if the pump has a spline shaft, and re-check
the setting distance.
When the coupling assembly is to be mounted in a vertical position,
we strongly recommend the use of the additional grub screw positioned
at 90° to the key slot, to reduce the risk of the coupling
hubs creeping down the shafts.
If the
additional grub screw is not to be used it must be removed from
the coupling hub.
Assemble the pump and motor to the bell housing ensuring that
there is no loose matter i.e. grub screws washers etc remaining
inside the housing and that no rotating component is within 5.0mm
of any non rotating part.
Tighten all bolts to the correct torque values. We recommend
the use of shake proof washers with all bolts.
Axial
Misalignment
All
couplings, plus or minus 50% of flange gap (dimension 'C' below)
Tightening
torques for the jbj 'JXL' resilient couplings maintenance
|
Coupling Size |
Screw Size |
Tightening Torque |
Coupling Size |
Screw Size |
Tightening Torque |
|
Nm |
lb/ft |
Nm |
lb/ft |
|
25 » |
M5 |
5.08 |
3.75 |
148 » |
M16 |
187 |
138 |
|
32 » |
M5 |
5.08 |
3.75 |
160 » |
M16 |
187 |
138 |
|
42 » |
M6 |
9.20 |
6.80 |
170 » |
M16 |
187 |
138 |
|
55 » |
M6 |
9.20 |
6.80 |
190 » |
M20 |
337 |
249 |
|
65 » |
M6 |
9.20 |
6.80 |
210 » |
M20 |
337 |
249 |
|
80 » |
M10 |
41.00 |
30.00 |
240 » |
M24 |
568 |
419 |
|
90 » |
M10 |
41.00 |
30.00 |
270 » |
M30 |
1144 |
835 |
|
100 » |
M12 |
77.00 |
57.00 |
300 » |
M30 |
1144 |
835 |
|
120 » |
M12 |
77.00 |
57.00 |
340 » |
M30 |
1144 |
835 |
Periodically check flange alignment and resilient elements for
wear.
Note
JXL couplings are capable of accepting a momentary overload of
twice nominal torque and have an operating temperature range
of -50°C to +105°C.
JXL coupling
dimensions
|
Type |
Minimum
Bore G |
Maximum
Bore G |
A |
B |
C |
D |
E |
H |
Inertia kg/m²
unbored |
Weight kg |
|
JXL 25 |
12 |
28 |
53 |
25 |
3 |
15 |
80 |
40 |
0.0038 |
1.36 |
|
JXL 32 |
16 |
38 |
63 |
30 |
3 |
15 |
90 |
50 |
0.0065 |
1.93 |
|
JXL 42 |
18 |
48 |
85 |
40 |
5 |
25 |
115 |
65 |
0.0186 |
3.69 |
|
JXL 55 |
20 |
60 |
105 |
50 |
5 |
25 |
135 |
80 |
0.0560 |
7.45 |
|
JXL 65 |
30 |
73 |
125 |
60 |
5 |
25 |
150 |
95 |
0.0937 |
10.64 |
|
JXL 80 |
35 |
90 |
155 |
75 |
5 |
30 |
185 |
120 |
0.269 |
20.34 |
|
JXL 90 |
45 |
100 |
165 |
80 |
5 |
40 |
210 |
135 |
0.552 |
30.26 |
|
JXL100 |
50 |
110 |
185 |
90 |
5 |
50 |
235 |
150 |
0.895 |
40.53 |
|
JXL 120 |
60 |
130 |
225 |
110 |
5 |
50 |
260 |
175 |
1.727 |
63.35 |
|
JXL 148 |
70 |
155 |
256 |
125 |
6 |
65 |
330 |
215 |
5.334 |
116.82 |
|
JXL 160 |
75 |
170 |
276 |
135 |
6 |
65 |
350 |
235 |
6.920 |
138.03 |
|
JXL 170 |
75 |
200 |
326 |
160 |
6 |
70 |
430 |
280 |
17.88 |
243 |
|
JXL 190 |
85 |
220 |
386 |
190 |
6 |
80 |
480 |
310 |
31.87 |
353 |
|
JXL 210 |
95 |
245 |
406 |
200 |
6 |
80 |
540 |
345 |
51.64 |
458 |
|
JXL 240 |
110 |
280 |
510 |
250 |
10 |
100 |
610 |
395 |
106.25 |
737 |
|
JXL 270 |
120 |
320 |
570 |
280 |
10 |
105 |
665 |
450 |
168.40 |
996 |
|
JXL 300 |
135 |
350 |
630 |
310 |
10 |
105 |
715 |
490 |
238.40 |
1252 |
|
JXL 340 |
150 |
400 |
710 |
350 |
10 |
105 |
845 |
560 |
471.60 |
1846 |
 |
|
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