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１． Overview
（１） This pump is an electric pump for operating a hydraulic actuator (cylinder, etc.). The pump
features automatic changeover between high pressure and low pressure. Both the high
pressure and low pressure pumps initially operate simultaneously. Once the circuit
pressure reaches 1.5 MPa, the low pressure safety valve activates and all oil flow from the
low pressure pump is then returned to the tank via the low pressure safety valve. From this
pressure (1.5MPa) only flow from the high pressure pump proceeds to the cylinder.
（２）
The pump is
not designed
for use in areas subject to
water ingress or where it is likely
to be exposed to precipitation or other
inclement weather conditions.
（３） Use in areas where the surrounding
temperature is 0 to 40 degrees Celsius.
（４）
Hydraulic equipment
used with this pump
should be
products
manufactured by Riken.
（５） Use only with a high pressure hose, or high pressure pipe and connectors that have a
maximum working pressure of 70 MPa.
（６）
Do not use in areas where severe damage may occur
should hydraulic oil leak or
escape.
Specifically, do not use near flammable materials due to the risk of injury
and fire.
（７） This pump is not spark resistant and therefore should not be used in hazardous areas.
（８）
Do not modify this pump
for usage other than the intended usage.
２． Model Explanation
SMP - 30 1 2 NV
Basic Type
3 Way Valve Manual Operation Type
Automatic Return Type
Intermediate Stop Type
3 Way Valve Manual Operation with Relief
Non-Inertia Type
Return-Hold Type
NV
B
AR
SK
BR
NE
RK
：
：
：
：
：
：
：
For Single-Acting
Cylinder
4 Way Valve Manual Operation Type
With Automatic Falling Prevention Valve
Pressure Maintenance Type
4 Way Valve Manual Operation with Relief
Center Bypass Type
P Port Block Type
Shuttle Valve Loading Type
C
DCB
DVH
CR
SW
SP
SL
：
：
：
：
：
：
：
For Double-Acting
Cylinder
Compact Electric Hydraulic Pump
30
40
Series
1：100V
2：200V
3：230V
Motor Voltage
2：2L
4：4.5L
6：6.5L
Tank Oil
Amount
