Enerpac ST-121 - Manual (Page 8)

INSTALLATION (continued)
Hydraulic Connections
To make port connections, install fittings rated for 5000 psi (350 bar).
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, remember to consider the factors listed in
PRELIMINARY INFORMATION on page 3 of this Instruction Sheet. For more
information about plumbing hydraulic circuits, see your Enerpac Production
Automation Catalog.
Port Identification
A
A
B
B
A
Side View Side View
Side View
Bottom View
Side View
Bottom View
Unclamp
Clamp
Clamp
Unclamp
Clamp
Clamp
Unclamp
Unclamp
Threaded Body
300 lb (1 kN)
Threaded
Body
500-2600 lb
(2,2-11,6 kN)
Upper
Flange
Body Style
(Long Stroke)
Lower
Flange
Body Style
Bottom View Bottom View
Manifold
Ports
Manifold
Ports
A
B
A
B
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. (See page 9
vent plug section.)
Cylinder Ports
Cylinder Capacity 5000 psi SAE Fitting Cylinder Capacity 5000 psi SAE Fitting
300 lbs (1,3 kN) #2 1250 lbs (5,6 kN) #4
500 lbs (2,2 kN) #2 2600 lbs (11,6 kN) #4
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