Manual Hydraulic Pump

A Power Source With No Hook-Up

The Manual Hydraulic Pump produces high-pressure oil purely by hand lever, reaching 63 MPa, and drives cable tensioners, destressing jacks, and cutters without electricity or compressed air. It is the cheapest and most self-contained option for remote headings, goaf edges, and temporary repair points, and the company has built these pumps since 2007.

The pump is two-stage: the low-pressure stage delivers 14.5 mL per stroke for fast empty-stroke advance, then the high-pressure stage cuts in at 2.3 mL per stroke once the load contacts, capping at 63 MPa with about 350 N hand force. SYB-2S is a dual-circuit pump for tools with two oil ports, such as tensioning and destressing jacks, and weighs 10 kg. SYB-2 is a single-circuit pump for spring-return tools such as the LDZ bolt tension testers, at 8 kg. Both carry a 2.0 L tank.

There is no motor and no air motor, just a plunger and a few valves, so failure points are few and underground crews can replace seals themselves. The purchase cost sits well below pneumatic or electric pumps, which suits small development teams and low-frequency use.

MOQ is one unit; buyers choose the single or double circuit to match their tool. Because there is no motor and no air motor, failure points are few, and underground crews can replace seals themselves without a specialist. The purchase price sits well below pneumatic or electric pumps, which is why small development teams and private coal mines keep choosing it for occasional and remote work. The high-pressure stage delivers 2.3 mL per stroke and the low-pressure stage 14.5 mL, at about 350 N hand force, so crews reach pressure without tiring quickly. Both versions carry a 2.0 L oil tank. The company has built these hand pumps since 2007, so the design is mature and the seals are easy to source.

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