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 (0.3/0.4I), 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”.
22
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