The order picker hydraulic power unit is the most functionally complex HPU in the walkie material handling equipment category, because an order picker truck — unlike a standard pallet truck — has two independent hydraulic functions that must be controlled separately and safely: the fork lift circuit that raises and lowers the load forks, and the operator platform elevation circuit that raises and lowers the platform on which the picker operator stands to access products at height. These two circuits must operate independently — the operator may need to raise the platform without raising the forks, or lower only the forks without descending the platform — and the platform circuit must incorporate a safety valve that prevents uncontrolled platform descent in the event of a hydraulic failure, because an uncontrolled descent of a loaded operator platform is a Category 1 safety hazard under EN 1726-2 (Safety of industrial trucks — Self-propelled trucks with elevating operator position). EVER POWER has manufactured the order picker hydraulic power unit from our Hangzhou, Zhejiang Province, China facility since 2002, supplying dual-circuit HPUs to order picker and picking cart OEMs in China, Germany, the Netherlands, the United States, and Australia. View full HPU range →

The engineering challenge unique to the order picker hydraulic power unit is integrating two independently controlled hydraulic circuits — each with its own solenoid valve, pressure setting, and lowering control — into a single compact HPU assembly that fits within the order picker’s chassis envelope and draws power from a single shared DC motor and pump assembly. The most common design approach is a single motor-pump unit feeding a dual-circuit manifold with two independently controlled lowering valves and two independent relief valve settings, allowing the platform circuit to be set at a lower maximum pressure than the fork circuit since the platform carries the lighter operator-plus-picking-tote load rather than the full pallet load carried by the forks. EVER POWER’s dual-circuit order picker hydraulic power unit implements this design with two-circuit pressure setting that is factory-set and sealed, reducing the risk of field adjustment errors that could compromise platform safety lowering performance.

Why Choose EVER POWER Order Picker HPU

The order picker hydraulic power unit is a safety-critical component because it directly controls the platform on which the human operator stands. EVER POWER builds the order picker HPU to the specification that meets both the functional productivity requirements and the operator safety requirements of the order picking application.

작동 원리 및 구조

The order picker hydraulic power unit operates as a dual-function single-motor-and-pump assembly feeding two independently controlled hydraulic circuits through a circuit-select valve on the shared manifold. When the truck controller receives a fork lift or lower command, the circuit-select valve directs the pump output or the lowering return flow through the fork circuit solenoid valves. When a platform lift or lower command is received, the circuit-select valve routes flow through the platform circuit solenoid valves. Because the motor and pump are shared, only one function can be actively powered at a time in the basic circuit architecture — simultaneous fork lift and platform ascent is not typically required in order picking operation. The platform circuit safety valve remains at its normally-closed state during any platform hold condition, arresting descent and holding the operator at the commanded height until the controller actively commands lowering by energising the solenoid and the safety valve simultaneously.

The manifold block is machined from a single 6061-T6 aluminium billet on a 4-axis CNC machining centre, with all hydraulic ports, spool bores, and cartridge valve seats machined in a single setup to ensure positional accuracy and eliminate the inter-block joint faces that are potential leak sources on multi-piece manifold assemblies. The motor and pump sub-assembly is flange-mounted to the reservoir top face through an anti-vibration elastomer coupling that protects the pump drive gear from motor shaft run-out and torque impulse. Reservoir capacity is 1.5–3.0 L on standard order picker HPU configurations; hydraulic fluid is ISO VG 46 AW for standard temperature range, ISO VG 15 for cold-store order picking variants.

기술 사양

Platform safety lowering valve standard on all models. Factory-set sealed pressure adjustment. Manual emergency lowering standard. Pressure switch load-detection option. Custom circuit configuration from MOQ 10 units.

응용 프로그램 시나리오

The order picker hydraulic power unit is specified on all classes of picking cart and order picker trucks where the operator platform requires powered elevation: low-level order pickers (platform to 1.0 m), mid-level order pickers (platform to 2.5 m), and high-level order pickers (platform to 5.5 m or above). The dual-circuit HPU is the core enabling technology for the elevated platform function that differentiates an order picker from a standard pallet truck, and its reliability directly determines the availability of the machine for the picking operation it serves.

Customer Success Story

고객들이 하는 말

Hangzhou Factory & Custom Manufacturing

EVER POWER Hydraulic Machinery manufactures the order picker hydraulic power unit from our 28,000 m² integrated facility in Binjiang District, Hangzhou, Zhejiang Province, China — a nationally recognised precision hydraulic engineering hub. Our hydraulic power unit production line integrates motor testing, gear pump assembly, precision valve block machining, manifold assembly, complete system wiring, and multi-point functional testing under one roof, with annual capacity exceeding 80,000 hydraulic power units for material handling equipment OEMs. We have supplied the order picker hydraulic power unit to forklift manufacturers, AGV builders, and MHE aftermarket distributors in over 30 countries since 2002. About EVER POWER →

Custom engineering is a core service at EVER POWER. Non-standard voltage configurations (12V, 24V, 36V, 48V, 72V, 80V DC or AC), alternative motor types (DC gear, BLDC, AC induction), custom manifold port layouts, bespoke reservoir geometries, and OEM private labelling are all available from a minimum 10-unit trial batch. Our engineering team converts a customer circuit diagram, worn original unit, or dimensional sketch into a 3D model and PDF drawing within 48 hours. Frame-contract OEM customers receive a dedicated account engineer, production priority scheduling, and container-ready weekly shipment from Ningbo Port. SGS, Bureau Veritas, and TUV third-party inspection welcomed. Full HPU product range →

Quality Assurance & Certifications

Every order picker hydraulic power unit undergoes a documented multi-stage quality programme: incoming motors and pumps verified by current-draw and flow bench test; valve block spool bores measured by air gauge to ±0.01 mm; cartridge valve seat leak tested at rated pressure; manifold assembly leak-checked on nitrogen bench; complete unit functional test at rated voltage, rated load, and max pressure; no-load current, rated-load current, and full-load current recorded on test report. ISO 9001:2015 certified quality management system. CE documentation maintained for EU-bound OEM shipments. Full test report and component certificates accompany every container shipment from Ningbo Port, Zhejiang, China.

10-Step Production Process

Sourcing from Hangzhou, China

EVER POWER ships the order picker hydraulic power unit from our Hangzhou plant through Ningbo Port — 150 km away — on weekly container sailings. Standard catalogue HPUs dispatch within 7–15 working days; custom configurations within 20–35 working days. Transit: Rotterdam 28–32 days, Los Angeles 18–22 days, Sydney 16–20 days, Santos 22–28 days. Air freight samples depart Hangzhou Xiaoshan International Airport within 3 working days. Domestic Chinese OEM buyers receive dispatch in 2–3 working days. Payment: 30% TT deposit, balance against B/L copy; LC at sight above USD 30,000; Trade Assurance to USD 100,000. FOB Ningbo, CIF, and DDP all supported.