Porting and air bleeds, Hh-6, And the – Sheffer HH SERIES User Manual
Page 7: Porting dimensions
Porting
S.A.E. Ports, located in positions 1 and
5 (See Position Diagram for Ports) are
standard and will be furnished unless
otherwise specified. Other types and
sizes of ports are available on request,
at slight additional cost.
Port Positions -
Where mounting
clearances permit, the ports can be in
any of four positions in the head and
in the cap at no extra cost. Indicate
both port positions desired by position
number. If no preference is stated, ports
will be furnished in positions 1 and 5.
NOTE: The head and cap can be rotated
in relation to each other as long as
mounting and porting are convenient
for installation.
1
2
3
4
5
6
7
STD.
MAX.
S.A.E.
S.A.E.
MAX.
MM
STD.
MAX.
ST.
THRD.
S.A.E.
ROD
NPT.
NPT.PORT
THRD.
PORT
FLG.
BORE
DIA.
PORT
HEAD
CAP
PORT
HEAD
CAP
PORT
1
1
/
8
5
/
8
STD.
1
/
4
3
/
8
*
3
/
8
*
-6
-6
-6
—
5
/
8
STD.
1
/
2
3
/
4
3
/
4
-10
-10
-10
—
1 2:1
1
/
2
3
/
4
3
/
4
-10
-10
-10
—
1 STD.
1
/
2
3
/
4
*
3
/
4
*
-10
-12*
-12*
—
1
3
/
8
2:1
1
/
2
3
/
4
*
3
/
4
*
-10
-12*
-12*
—
1 STD.
1
/
2
3
/
4
*
3
/
4
*
-10
-12
-12
3050
1
3
/
8
1
/
2
3
/
4
*
3
/
4
*
-10
-12*
-12*
3050
1
3
/
4
2:1
1
/
2
3
/
4
*
3
/
4
*
-10
-12*
-12*
3050
1
3
/
8
STD.
3
/
4
3
/
4
1*
-12
-12
-16*
3075
1
3
/
4
3
/
4
3
/
4
1*
-12
-12
-16*
3075
2 2:1
3
/
4
1*
1*
-12
-16*
-16*
3075
1
3
/
4
STD.
3
/
4
3
/
4
1*
-12
-14
-16*
3075
2
3
/
4
3
/
4
1*
-12
-14
-16*
3075
2
1
/
2
2:1
3
/
4
1*
1*
-12
-14
-16*
3075
2 STD.
3
/
4
3
/
4
1*
-12
-16*
-16*
3075
2
1
/
2
3
/
4
1*
1*
-12
-16*
-16*
3075
3
3
/
4
1*
1*
-12
-16*
-16*
3075
3
1
/
2
2:1
3
/
4
1*
1*
-12
-16*
-16*
—
2
1
/
2
STD.
1
1
1
/
4
*
1
1
/
4
*
-16
-20*
-20*
3125*
3
1
1
1
/
4
*
1
1
/
4
*
-16
-20*
-20*
3125*
3
1
/
2
1
1
1
/
4
*
1
1
/
4
*
-16
-20*
-20*
3125*
4 2:1
1
1
1
/
4
*
1
1
/
4
*
-16
-20*
-20*
—
3 STD.
1
1
/
4
1
1
/
2
1
1
/
2
-20
-24
-24
3150
3
1
/
2
1
1
/
4
1
1
/
2
1
1
/
2
-20
-24
-24
3150
4
1
1
/
4
1
1
/
2
1
1
/
2
-20
-24
-24
3150
4
1
/
2
1
1
/
4
1
1
/
2
1
1
/
2
-20
-24
-24
3150
5 2:1
1
1
/
4
1
1
/
2
1
1
/
2
-20
-24
-24
3150
3
1
/
2
STD
1
1
/
2
2
2
-24
-32*
-32*
3200
4
1
1
/
2
2
2
-24
-32*
-32*
3200
4
1
/
2
1
1
/
2
2
2
-24
-32*
-32*
3200
5
1
1
/
2
2
2
-24
-32*
-32*
3200
5
1
/
2
2:1
1
1
/
2
2
2
-24
-32*
-32*
3200
4
1
/
2
STD.
2
2
1
/
2
2
1
/
2
-32
-32
-32
3250
5
2
2
1
/
2
2
1
/
2
-32
-32
-32
3250
5
1
/
2
2
2
1
/
2
2
1
/
2
-32
-32
-32
3250
7 2:1
2
2
1
/
2
2
1
/
2
-32
-32
-32
3250
5
1
/
2
STD.
2
1
/
2
3
3
-32
-32
-32
3300
7
2
1
/
2
3
3
-32
-32
-32
3300
8 2:1
2
1
/
2
3
3
-32
-32
-32
3300
7 STD.
2
1
/
2
3
3
-32
-32
-32
3300
10 2:1
2
1
/
2
3
3
-32
-32
-32
3300
*
Y and P dimensions as shown on mounting dimensions pages must change to
accommodate these port sizes.
Position Diagram for Ports,
Air Bleeds, Cushion Adjusting
Screws and Cushion Checks
1
2
3
4
5
6
7
8
9
1
1
/
8
" THRU 14" BORES
Porting and Air Bleeds
Port Sizes
- Standard ports are S.A.E.
and sizes as shown in Column 5 on the
adjacent chart. Unless otherwise
specified, those sizes are what will be
furnished. Smaller than standard
ports can be supplied at no extra
cost. It is recommended that cylinders
be ordered with ports no larger than
needed so that the trouble and expense
of obtaining and installing reducing
fittings can be avoided. At a modest
cost, larger than standard ports, as
shown in COLUMN 6, can be
furnished. While these larger ports
can be put in a standard cylinder, it is
necessary in some cases to slightly alter
the
Y
and the
P
dimensions shown
on our mounting dimension pages.
Contact the factory for those
dimensional changes.
S.A.E. Straight Thread Ports
- This
type of port offers positive seal with full
thread engagement. It also eliminates
the problem of faulty
pipe threads since sealing takes
place independently of the thread. No
messy pipe dope to bother with or to
contaminate the hydraulic system. No
wedging, distortion, or breakage due
to over-tightening. Alignment and full
sealing are both assured since the
fittings can be tightened after lining up.
Straight thread fittings may be reused,
indefinitely. COLUMN 6 shows the
maximum size of S.A.E. port that can be
furnished in a standard cylinder. Larger
sizes accommodated with special heads
and caps.
S.A.E. Flanged Ports
- At a slight
additional cost, flanged ports can be
provided. COLUMN 7 shows the
maximum standard S.A.E. flange sizes
available.
Air Bleeds
An air bleed may be ordered at either
or both ends of the cylinder as an
option. To provide for maximum
bleeding of air from the cylinder,
Sheffer places its air bleeds in the tube
to bleed air from the tube/head or
tube/cap juncture. The air is bled from
the cylinder by backing out the straight
thread metallic seal plug to allow air to
pass by the threads. When air bubbles
stop and oil starts to flow, retighten
plug. It is recommended that bleeding
be done with pressure on the opposite
end of the cylinder so that the bleed
plug is not subjected to pump pressure
when being backed out. Air bleeds
should always be positioned at the
highest point of the cylinder tube.
Please specify positions of air bleeds by
position number from the chart.
NOTE: Since Sheffer puts air bleeds
in the cylinder tube, position can be
changed by loosening the tie rods and
rotating the tube. Photos and Line
Drawings show ports in positions 1
and 5.
1
1
/
2
2
2
1
/
2
3
1
/
4
4
5
6
7
8
10
12
14
Porting Dimensions
HH-6