Rice Combine Harvester Hydraulic Cylinder RFQ Checklist

A rice combine harvester hydraulic cylinder RFQ should describe the machine function, mounting geometry and muddy field duty. The verified product record lists multiple configurations rather than fixed dimensions, so buyers should provide the actual drawing or a complete measurement sheet instead of assuming a universal size.

Identify the Harvester and Cylinder Function

State the harvester type and model and identify the cylinder function. The verified application scope includes header lifting and field profiling, chassis steering and differential control, reel position adjustment, grain-tank tipping, threshing-drum gap adjustment and vibrating-sieve angle adjustment. Full-feed and semi-feed tracked harvesters and wheeled grain harvesters may use different arrangements.

Dimensions Required for an Accurate Quote

• Bore and rod diameters measured from the target cylinder or controlled drawing.
• Stroke, retracted length, extended length and pin-to-pin installation dimensions.
• Mounting type, pin diameters, mounting widths and end orientation.
• Port size, thread, orientation and hose-clearance limits.
• Installation envelope and nearby components through the full movement.
• Drawing number, revision and quantity for each cylinder function.

Operating Information to Include

• Normal working pressure and any known peak-pressure event.
• Push and pull loads, movement direction and machine linkage geometry.
• Extension and retraction speed, cycle frequency and seasonal duty.
• Exposure to mud, rice straw, dust, water, washdown and storage conditions.
• Ambient temperature and hydraulic-fluid information supplied by the machine owner.
• Acceptance, marking, pressure-test documentation and packaging requirements.

What the Verified Product Record Confirms

Because the source data does not provide one fixed dimensional range, an RFQ should not invent or borrow numbers from another agricultural cylinder. The supplier needs the actual application data to review a feasible configuration.

Replacement-Cylinder Data Package

Start with the original drawing and part identification if available. Otherwise, secure and isolate the machine before measuring. Photograph the cylinder in the installed position and after removal, showing mounts, ports, hose routing and both ends. Record whether corrosion, bent components or worn pin bores may have changed the measured geometry.

Muddy and High-Frequency Field Duty

The verified product description specifies a high-strength tube, wear-resistant piston rod and anti-mud, dust-proof sealing components for muddy, high-frequency farm operation. Buyers should describe the real field and cleaning conditions so the engineering review can address the intended exposure and maintenance environment.

Purchasing and Validation Details

• Prototype and production quantities.
• Destination, requested timing and seasonal deadline.
• Drawing approval and prototype machine-fit process.
• Required inspection and pressure-test records.
• Packing and corrosion protection for transport and off-season storage.

Common Specification Mistakes

Calling it only a lifting cylinder

The function name is not enough. Header, reel, steering and unloading cylinders can have different interfaces and duties.

Assuming one harvester size fits another

The verified source explicitly lists multiple configurations. Use the correct model drawing or measured target cylinder.

Leaving field conditions out of the RFQ

Mud, dust, washing and storage should be described because they define the real operating environment.

الأسئلة الشائعة

Can the cylinder be customized to a customer drawing?

Yes. The verified product record states that OEM and ODM customization is available according to customer drawings, with strict pressure testing before delivery.

What if bore, rod or pressure is unknown?

Mark the field as unknown and submit the known machine and geometry data. Do not copy a value from an unrelated harvester cylinder.

Explore the Zhenqiang hydraulic-cylinder range and prepare a separate specification sheet for each harvester function.