Warner Electric H420 User Manual
P-2067-WE
SM320gb - rev 02/09
Hydraulic Multi-Disc Brake
H420
Service Manual
We, WARNER ELECTRIC EUROPE, 7, rue Champfleur, B.P. 20095, F-49182 St Barthélemy d’Anjou Cedex
declare that the brakes made in our factories from St Barthélemy d’Anjou,
and hereafter designated : H420
are intended to be incorporated in an installation or to be assembled with other machinery with a view to constituting a machine to which
direc tive 98/37/EC.
Drawn up in St Barthélemy d’Anjou, July 2002
E. PRAT, General Managing Director
CONTENTS
1 Technical specification 2
2 Precautions and restrictions on use 2
2.1 Restrictions on use 2
2.2 Precautions in use 2
and safety measures
3 Installation 3
3.1 Transport - storage 3
3.2 Handling 3
3.3 Installation 3
3.4 Manual release 3
4 Maintenance 3
4.1 Maintenance 3
4.2 Spare parts 3
4.3 Dismantling / reassembling 3-4
5 Hydraulic connection 4
5.1 Important recommendations 4
5.2 Hydraulic oils 4
5.3 Connection diagrams 5
6 Appendix 6
7 Troubleshooting 6
1 Technical specifications
STANDARD Size 90 150 250 550 1000 3200 6400 12800
Max speed min
P min. bar
VAR 00VAR 01
P max. bar
-1
5000
29
320
5000
24
320”
4200
21
320
3500
“23
320
2500
22
320
1700
22
350
1400
35
350
HIGH TORQUE Size 150 220 330 730 1600
Max speed min
P min. bar
P max. bar
Hydraulic connection NF E03-004 Locking screws (909) Tightening torque Nm
Releasing screw Length mm
Oil change, ling and oil level cap -
-1
5000
48
320
RP 1/8”
12 x M8
38
2 x M6
20
2 x M8
5000
36
320
RP 1/8”
12 x M8
38
3 x M6
20
3 x M8
4200
28
320
RP 1/4”
12 x M8
38
3 x M6
25
3 x M8
3500
31
320
RP 1/4”
12 x M10
75
3 x M8
30
3 x M12
2500
36
320
RP 1/4”
12 x M12
130
3 x M8
30
3 x M12
RP 3/8”
12 x M16
325
3 x M10
35
3 x M14
RP 1/2”
12 x M20
637
3 x M16
40
3 x M20
(936, 937, 939)
Weight Kg
6,0
8,2
12,0”
20,0
37,5
119
196
1100
35
350
RP 1/2”
12 x M24
700
6 x M16
80
3 x M20
360
NB: Data for catalogue equipment Table 1
2 Precautions and restrictions on use
Symbol designating an action that
might damage the apparatus
2.1 Restrictions on use
This equipment is designed for the disc stack to run
in oil. Dry operation is possible, but only in a
static application.
2.2 Precautions in use and safety measures
During maintenance, ensure that the mechanism
Symbol designating an action that
might be dangerous to human safety
to be braked by the equipment is at rest and
that there is no risk of accidental start-up.
All intervention have to be made by qualified
Exceeding the maximum rotation speed stated in the
catalogue invalidates the warranty.
This equipment is designed to run with the shaft
horizontal.
personnel, owning this manual.
Any modification made to the brake without
the express authorisation of a representative of
Warner Electric, in the same way than any use
out of the contrac tual specifications accepted by
“Warner Electric”, will result in the warranty being
invalidated and Warner Electric will no longer be
liable in any way with regard to conformity.
2 Warner Electric Europe • +33 (0)2 41 21 24 24 P-2067-WE • 2/13
3 Installation
In the case of operation in oil only:
3.1 Transport / storage
The brakes are supplied in packaging
guaranteeing a preservation period of 6 months
with land or air transport, or after transport by
ship to neighbouring continents (with out crossing
the tropics).
3.2 Handling
The brake is supplied assembled, the hub (515)
pre centred in place.
Be careful not to release the disk stack before
assembly.
Avoid any impacts on the equipment so as not to
alter their performance.
3.3 Installation
The hub (515) is normally supplied to H7
tolerances for bore and P9 for the width of the
keyway (in accordance with NF E 22-175 / DIN
6885 / BS 4235 / ISO R773).
• Locate the hub on the shaft (after adjusting the
key) and fix it axially
NB: For VAR00 sizes 90 / 150 / 250 and VAR01
sizes 150 / 220 / 330, the hub (515) should be
fitted in the right direction: the largest diameter
towards the shoulder of the shaft.
• Slide the equipment into position in the
centring provided, having first directed the
supply to the top position of the vertical axis,
while presenting the hollows of the steel or
sintered inner disc (308) or (309) opposite to
the hub teeth (515)
• Pivot the assembly until the fixing holes
coincide with the bolt ways in the brake.
• Fix the brake with the bolts provided for the
purpose
Do not forget to tighten the locking screws (909)
to the torque (table 1) and to secure them with a
Loctite 243 type or equivalent product.
• Connect the hydraulics (see table 1)
• Remove the filling cap (937) and oil level cap
(939) (the lowest of the plugs located at the
back). Pour in the oil (see chap. 5 for the
choice) up to the level required. Replace the
caps
3.4 Manual Release
Brakes in the H420 range can be released
manually so as to put the brake out of operation,
in the event of a fault in the hydraulic circuit
or for maintenance. To do this, the caps (939)
must be removed so as to access the tapped
holes provided in the piston (402). Fit a set of
bolts (given in table 1) and screw them right in to
compress the springs.
4 Maintenance
4.1 Maintenance
There is practically no wear on the discs of units
in the H420 range if the running conditions are
complied with (operation in oil, oil temperature,
rotation speed, etc.). Disc wear is automatically
compensated for, up to the wear limit, by the
movement of the piston. It is however necessary
to:
• Regularly check the piston seal (402) and in the
event of a leak or after 5 years use, change the
seals (703, 704) and back-up rings (722, 723)
In the case of operation in oil only:
• Change the oil after 40 h running from first use,
then every year of normal running.
4.2 Spare parts
For all orders of spare parts, state the size of the
equipment with its code number, the part number
(see Appendix) and the quantity required.
4.3 Dismantling / reassembling
During the maintenance period, ensure that the
mechanism to be braked by the equipment is at
rest and that there is no risk of accidental start-
up. Also ensure that the hydraulic supply is shut
off.
Warner Electric Europe • +33 (0)2 41 21 24 24 P-2067-WE • 2/13 3
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