Enerpac ST-202 - Manual (Page 5)

Before a swing cylinder can be manifold mounted, the
port screw plugs must be removed. The o-rings provided
should be lubricated and installed in the counter-bore
around the port prior to mounting and bolting down the
swing cylinder.
Be sure that the o-ring does not get pinched or damaged
during mounting as leakage could result. To prevent
leakage from the manifold mounting, provide a fixture
mounting surface with latness within 0,08 mm (0.003 in)
and a surface roughness not to exceed Ra 1,6
6.0 INSTALLATION
6.1 Hydraulic Connections
To make port connections, install fittings rated for 350
bar (5000 psi).
DO NOT use thread sealant. Sealing is accomplished by
using an o-ring on the fitting boss. Lubricate the o-ring
prior to assembly.
When designing your hydraulic circuit, consider the
factors listed in PRELIMINARY INFORMATION on page
3. For more information about plumbing hydraulic
circuits, see your Enerpac Production Automation
Catalog.
6.2 Port Identification
6.3 Vent Plug
Single-acting cylinders have a vented plug on the left
side of the cylinder when you are facing the hydraulic
ports. To prevent entry of chips and coolant, the vent
plug must not be removed. If the vent plug is subjected
to a continuous coolant flood condition, attach tubing to
the port using a BSPP fitting, and run the tubing to a non-
contaminated area of the fixture. Cylinder Ports
Cylinder Capacity 350 bar
BSPP Fitting
9,0 kN (2024 lb) G 1 / 4
18,8 kN (3900 lb) G 1 /
4
35,0 kN (7600 lb) G 1 / 4
5
KEY
A Port: Plunger rotates 90 ° and clamps
B Port: Double-acting -- Plunger unclamps and
rotates -90 °
Single-acting -- Vent Port
Do not remove vent plug except to attach tubing.
Upper flange
Remove port
screw plug
Remove port
screw plug
Lower flange
O-ring
O-ring
Unclamp
Clamp
Unclamp
Clamp
Upper flange
body style
(long stroke)
Side view Side view
Bottom view Bottom view
Manifold
ports
A
B
A
B
Unclamp
Clamp
Lower flange
body style
Manifold
ports
A
B
Bottom view
Threaded
Body
Side view
Threaded
Body