Mounting Bolts,
Subplates and Manifold
Blocks
Mounting Bolts
The length of mounting bolt used to
install a SystemStak assembly is
dependent on the number of valves
being used, plus the length needed for
mounting other valves in the assembly,
such as:
–
solenoid operated, or other type of
directional valve
–
tapping plate
–
blanking or crossover plate.
Vickers offers a large selection of bolt
kits (one bolt kit for these SystemStak
valves comprises 4 bolts) in metric and
inch sizes as listed. To determine your
needs, use the following guide for bolt
length calculation.
Further Information
A
= Bolt clamp length in directional valve, blanking
plate, crossover plate, etc.
B
= Height of intermediate valve stack, comprising
Vickers SystemStak valve(s) plus tapping
plates, etc.
C = Depth of thread engagement in sub-plate/
manifold block:
8/10 mm (0.3/0.4
I
), valid for:
315 bar (4500 psi) when using cast iron or
steel subplates/manifold blocks, or 210 bar
(3045 psi) when using Vickers aluminium
alloy manifold blocks.
L
= Required bolt length; select from the table.
Notes
1. Bolts should be torqued to 7-9 Nm (63-80 lbf in)
with threads lubricated.
2. If not using Vickers bolt kits, bolts must be to
Grade 12.9 (ISO 898) or better.
A
B
C
L
Bolt Kit Selection
Metric: M5-6g
Inch: 10-24 UNC-3A
Length
Vickers bolt
Length
Vickers bolt
(mm)
kit number
(in)
kit number
50
BKDG3699M
2.0
BKDG3698
60
BK466836M
2.375
BK466849
70
BK464125M
2.75
BK870017
80
BK466837M
3.125
BK466850
90
BK466838M
3.5
BK466851
100
BK466839M
3.937
BK466852
110
BK466840M
4.312
BK466853
120
BK466841M
4.75
BK466854
130
BK466842M
5.125
BK466855
140
BK466843M
5.5
BK466856
150
BK466844M
5.937
BK466857
160
BK466845M
6.312
BK466858
170
BK466846M
6.687
BK466859
Subplates and Manifold Blocks
See
“
Subplates and Auxiliary
Connection Plates
”
catalog 2425.
Hydraulic Fluids
Materials and seals used in these valves
are compatible with :
Anti-wear petroleum oils
L-HM
. . . . . . . .
Water glycols
L-HFC
. . . . . . . . . . . . . . . .
Invert emulsions
L-HFB
. . . . . . . . . . . . . .
Non-alkyl based
phosphate esters
L-HFD
. . . . . . . . . . . . .
The extreme operating range is 500 to
13 cSt (270 to 70 SUS) but the
recommended running range is 54 to 13
cSt (245 to 70 SUS). For further
technical information about fluids see
694.
Filtration Requirements
Recommendations on filtration methods
and the selection of products to control
fluid condition are included in Vickers
publication 561 or 9132. For products in
this catalog the recommended fluid
cleanliness levels are:
Up to 210 bar (3050 psi)
18/16/13
. . . . .
Above 210 bar (3050 psi)
17/15/12
. . . .
Temperature Limits
Ambient range
–
20
_
C to +80
_
C
. . . . . . .
(
–
4
_
F to +176
_
F)
Fluid temperatures
Petroleum
Water-
oil
containing
Min.
–
20
_
C
+10
_
C
(
–
4
_
F)
(+50
_
F)
Max.*
+80
_
C
+54
_
C
(+176
_
F)
(+129
_
F)
*
To obtain optimum service life from both fluid and
hydraulic system, 65
_
C (150
_
F) is the
recommended maximum fluid temperature, except
for water-containing fluids.
For other fluids where limits are outside
those of petroleum oil, consult fluid
manufacturer or Vickers representative.
Whatever the actual temperature range,
ensure that viscosities stay within those
specified under
“
Hydraulic Fluids
”
.
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