Drill Rig Hydraulic Cylinder RFQ Checklist for OEM Buyers

A drill-rig hydraulic cylinder RFQ should connect dimensions to the actual drilling function, impact environment and movement cycle. Supplying only bore and stroke can leave critical mounting, pressure, speed and contamination conditions unresolved.

Describe the Rig and Cylinder Function

Identify whether the unit is installed on a bolt drilling jumbo, rock drilling jumbo or tunnel boring drilling rig. State the cylinder function—such as feed, boom lifting or another controlled movement—and identify whether the project is a new OEM design or a replacement. Each function should have its own drawing and part reference.

Dimensional Checklist

• Bore and rod diameters with units and tolerances.
• Stroke plus retracted, extended and installation lengths.
• Mounting type, pin diameters, bearing widths and end orientation.
• Port size, thread, position and hose-clearance requirements.
• Available installation envelope and interference limits.
• Drawing revision, part number or a clearly labeled replacement measurement sheet.

Operating and Duty Data

• Normal pressure and any known peak or shock-pressure condition.
• Maximum push and pull loads with their directions and machine geometry.
• Extension and retraction speed, cycle frequency and expected operating hours.
• Ambient temperature and exposure to rock dust, mud, water and impact.
• Any position-sensing or special interface requirement that is part of the buyer’s design.
• Inspection, pressure-test, marking and packaging requirements.

Verified Drill-Rig Cylinder Range

The range is a capability reference, not a pre-approved combination. The final bore, rod, stroke and pressure must be checked against load, stability, mountings and the complete duty cycle.

What to Provide for a Replacement

Whenever possible, attach the original drawing and nameplate data. If no drawing exists, measure the cylinder only after the rig and hydraulic system are safely isolated. Record ports, pin sizes, mounting widths, full travel and installed orientation. Include photos from several angles and explain the failure mode separately from the target dimensions.

Why the Working Environment Matters

The verified product description uses a high-strength cylinder tube, wear-resistant piston rod and anti-dust sealing components for high-impact, rocky working conditions. The buyer should still identify actual dust, mud, temperature and shock exposure so the quotation is based on the real application.

Prototype and Production Scope

Separate prototype approval from production supply. State the prototype quantity, validation plan, production quantity and expected demand. Confirm whether drawing approval, machine-fit testing or specific documentation is required before volume release.

RFQ Review Questions

• Are all dimensions tied to the correct rig and cylinder function?
• Are loads identified in both direction and magnitude?
• Are pressure, speed and duty cycle stated together?
• Are unknown items clearly marked rather than copied from another machine?
• Are destination, quantity, timing and document requirements included?

FAQ

Can a drill-rig cylinder be customized from drawings?

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

Can photos replace a drawing?

Photos are valuable supporting evidence, but controlled dimensions and operating data are still needed for production review.

Review the manufacturer and product overview, then assemble one RFQ package for each cylinder function.