HC8: 5 different intensification factors
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A Model = Without Dump Valves
B Model = With Dump Valves
G Model = Direct Proportionally Controlled
The HC8 is developed for applications where intensified pressure up to 2,000 bar are required. Operating like the HC2, the HC8 is a unique, self-contained device which, boosts inlet pressure by up to a 20:1 ratio without the use of an external power source.
In addition, the HC8 maintains high pressure by automatically compensating for consumption of oil on the high-pressure side. High pressure is directly proportional to inlet pressure. The HC8 is a compact unit weighing 4.5 kg. The HC8 works at inlet pressure from 20 to 200 bar. Higher pressure is available on special request.
The basic operation is illustrated in the function diagram. Oil is fed through the directional valve CV to the IN port, flowing freely through the check valves KV1, KV2 and DV to the high-pressure side H. In this condition, maximum flow through the booster is achieved, giving a fast-forward function.
When pump pressure is reached on the high-pressure side H, valves KV1, KV2 and DV will close. The end pressure will be achieved by the oscillating pump unit OP. The unit will automatically stall when end pressure on the high-pressure side H is reached. If a pressure drop on the high-pressure side exists due to consumption or leakage, the OP valve will automatically operate to maintain the end pressure.
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|PART NUMBER||INTENSIFICATION FACTOR||DUMP VALVE||CONNECTION||PRICE inc. VAT||PRICE exc. VAT||ADD TO MY PARTS LIST|
|HC8 - 5.0 - A - 1||HC850A1||5.0||A||1||£ 1,087.63||£ 906.36||ADD|
|HC8 - 6.6 - A - 1||HC866A1||6.6||A||1||£ 1,087.63||£ 906.36||ADD|
|HC8 - 9.0 - A - 1||HC890A1||9.0||A||1||£ 1,087.63||£ 906.36||ADD|
|HC8 - 13.0 - A - 1||HC8130A1||13.0||A||1||£ 1,087.63||£ 906.36||ADD|
|HC8 - 20.0 - A - 1||HC8200A1||20.0||A||1||£ 1,087.63||£ 906.36||ADD|
|HC8 - 5.0 - B - 1||HC850B1||5.0||B||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 6.6 - B - 1||HC866B1||6.6||B||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 9.0 - B - 1||HC890B1||9.0||B||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 13.0 - B - 1||HC8130B1||13.0||B||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 20.0 - B - 1||HC8200B1||20.0||B||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 5.0 - G - 1||HC850G1||5.0||G||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 6.6 - G - 1||HC866G1||6.6||G||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 9.0 - G - 1||HC890G1||9.0||G||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 13.0 - G - 1||HC8130G1||13.0||G||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 20.0 - G - 1||HC8200G1||20.0||G||1||£ 1,158.54||£ 965.45||ADD|
|HC8 - 5.0 - A - 2||HC850A2||5.0||A||2||£ 1,087.63||£ 906.36||ADD|
|HC8 - 6.6 - A - 2||HC866A2||6.6||A||2||£ 1,087.63||£ 906.36||ADD|
|HC8 - 9.0 - A - 2||HC890A2||9.0||A||2||£ 1,087.63||£ 906.36||ADD|
|HC8 - 13.0 - A - 2||HC8130A2||13.0||A||2||£ 1,087.63||£ 906.36||ADD|
|HC8 - 20.0 - A - 2||HC8200A2||20.0||A||2||£ 1,087.63||£ 906.36||ADD|
|HC8 - 5.0 - B - 2||HC850B2||5.0||B||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 6.6 - B - 2||HC866B2||6.6||B||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 9.0 - B - 2||HC890B2||9.0||B||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 13.0 - B - 2||HC8130B2||13.0||B||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 20.0 - B - 2||HC8200B2||20.0||B||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 5.0 - G - 2||HC850G2||5.0||G||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 6.6 - G - 2||HC866G2||6.6||G||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 9.0 - G - 2||HC890G2||9.0||G||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 13.0 - G - 2||HC8130G2||13.0||G||2||£ 1,158.54||£ 965.45||ADD|
|HC8 - 20.0 - G - 2||HC8200G2||20.0||G||2||£ 1,158.54||£ 965.45||ADD|
High Pressure Plate
High-pressure plate ordering code and specification can be seen from the table in the PDF-file here.
Ordering example of an HC8 with i = 13.0, DV incorporated and BSPP connections, mounted with high-pressure plate with HP-connection 1/4" BSPP, PG-connection 9/16-18 UNF:
HC8 - 13.0 - B - 1 with 8-285
Without Dump Valve
High pressure is relieved externally. This is achieved in most cases by the use of a pilot operated check valve.
With Dump Valve
Allows the high pressure side to be relieved. When port 'R' is pressurised and port 'IN' is open to tank.
With RV Valve
The RV valve allows you to control the high-pressure side proportionally controlled directly from the low-pressure side.
As shown in the chart Minibooster has a dual flow/pressure feature. Initially when fluid is supplied to the booster it flows straight through to the high pressure side. At this point all the supplied flow (up to the max. allowed inlet flow) goes to the actuator allowing it to operate fast in the desired direction. As soon as inlet pressure is reached in the actuator, the flow will then be supplied via the high pressure piston until intensified pressure is reached.
Temperature range oil: -40 °C to +120 °C
Temperature range water: +3 °C to +50 °C
Maximum inlet flow: See performance data for each model
Inlet pressure: Min. 20 bar (290 psi), max. 200 bar (2900 psi)
Note: Outlet pressure must never exceed 800 bar (11600 psi ), except for the HC7, HC8 + HC9
Filtration: 10 micron nominal; max. 19/16 according to ISO 4406
Connections: See data for each model.
Typical clamping circuit
0-103 Model - Example with single-acting cylinder
The HC2 is used to boost the pressure in an existing hydraulic circuit, e.g. in a machining centre to ensure a sufficient clamping force. As the HC2 can be directly fitted into the workholding system, high-pressure connections can be avoided.
Applications with larger flowrates
0-104 Model - Example with external pilot-operated check valve
In applications where the pump supplies a flow exceeding the maximum permissible supplied flow to the HC2, the HC2 is installed in parallel with a pilot-operated check valve. This check valve is dimensioned to allow for all the flow supplied from the pump. The inlet flow to the HC2 is limited to the maximum permissible flow for the particular intensification ratio.
As the cylinder moves forward, all the flow from the pump is used. When the pump pressure is established in the cylinder the check valve closes, and the end pressure builds up through the HC2. The cylinder is retracted by changing the position of the directional valve, whereby the pump is connected to the other side of the cylinder and the DV opens, allowing the fluid to return to the tank.
Dynamic seals for dual media boosters: