Hydraulic Drilling Rig

Jiangsu Hengcai Hydraulic Mechanical Co., Ltd. is a Hydraulic Drilling Rig manufacturer and custom hydraulic cylinder source factory in Jianhu County, Yancheng, Jiangsu Province, China. Since 1988, we have focused on the research and manufacture of hydraulic cylinders for mining, construction, marine, logistics and industrial equipment. Our Hydraulic Drilling Rig cylinders are engineered for anchor drilling rigs, rock drilling rigs and tunnel drilling rigs.

Cylinders Built for Underground Drilling Equipment

Drilling rig cylinders work below ground for long periods. They see rock dust, water spray, vibration impact, strong side loads and limited maintenance access. Our design combines reliable sealing, accurate stroke feedback and a rod surface that can tolerate abrasive conditions.

• High-precision displacement sensor: The sensor is built into the cylinder and transmits digital-analog signals to the rig controller. It detects cylinder stroke in real time and helps combined cylinders operate synchronously.
• Anti-bias guide sleeve: An innovative copper piling inside the guide sleeve inner hole gives the cylinder higher resistance to off-center loads and reduces wear caused by side forces.
• Wear-resistant rod finish: The rod outer surface is high-frequency quenched and finished with nickel-chromium or multi-layer chromium composite electroplating for wear, impact and corrosion resistance.

Where the Cylinder Fits on the Rig

• Anchor drilling rigs: Cylinders control feed, bolting and mesh support functions. Displacement feedback helps the operator confirm anchor hole depth and bolt position.
• Rock drilling rigs: High thrust is needed to hold the drill string against hard rock. The guide sleeve and hardened rod protect the cylinder from lateral vibration and abrasive cuttings.
• Tunnel drilling rigs: Multi-cylinder booms and feed slides must extend and retract in sequence. Synchronous movement reduces frame twisting and improves drilling accuracy.

Specifications and Performance Range

Configuration and Automation Integration

Because the cylinder is fitted to a specific rig model, we treat each inquiry as an engineering project. We confirm the working pressure, required stroke, mounting envelope, rod end load and sensor output before locking the design.

• Cylinder bore, rod diameter, stroke and mounting style are machined from the rig builder's drawings or measured from an original sample.
• Sensor output is configured to match the rig controller, using digital-analog transmission for stroke feedback and multi-cylinder synchronization.
• Rod finish is selected according to underground water, dust, rock impact and planned maintenance intervals.
• Port positions and hose connections are arranged to avoid interference with the rig frame, booms and guarding.

Manufacturing, Quality Control and Testing

Hengcai is the source factory for this range. Core processes are produced internally to control quality stability: welding, heat treatment, electroplating and electrostatic coating. The company has 22 manufacturing processes and 109 processing capabilities, with a self-made parts rate of about 70%. Annual output exceeds 80,000 hydraulic cylinders, covering both series production and replacement programs.

Quality evidence is generated during production with durability testing on a 2P-2F test bench, reciprocating and buffer performance testing, plus physical-chemical and metallographic laboratory checks. Management system certificates include ISO9001, ISO14001 and CE. For related underground equipment, we also manufacture the Hydraulic Support Cylinder and Head Machine Hydraulic Cylinder.

Installation, Commissioning and Maintenance

Every drilling rig cylinder leaves our factory with installation, commissioning and training support. If a problem appears during use, our after-sales team responds within 24 hours and works toward a diagnosis and action plan within 3-5 days. Cylinders under the one-year warranty are replaced with a new unit or the customer receives a discount on the next order.

We also supply long-term spare parts for cylinders we produce, including metal parts, pipe joints, sealing rings and rubber parts. This keeps maintenance planning simple for mine sites and rig builders.

Information We Use to Configure Your Solution

Frequently Asked Questions

What is the typical operating range of a Hengcai Hydraulic Drilling Rig cylinder?

Our range covers bore diameter 30-250 mm, rod diameter 10-180 mm, stroke 10-2000 mm, working pressure 5-35 MPa and working temperature -40 to 100 °C. Push force can reach 1750 kN and pull force 1100 kN.

How does the cylinder help multiple booms work together?

We build a high-precision displacement sensor into the cylinder. It detects stroke in real time and transmits digital-analog signals to the rig controller. That feedback keeps paired cylinders synchronized and reduces deviation caused by asynchrony.

Can Hengcai make cylinders from our drawings?

Yes. We are a source factory and develop products according to customer drawings or samples. We need the mounting geometry, bore, rod, stroke, pressure, sensor interface and operating environment to prepare a design.

What after-sales support is included?

Installation, commissioning and training are part of our service. We respond within 24 hours, work toward a diagnosis and plan within 3-5 days, and offer one-year warranty terms with replacement or next-order discount.

Which applications use this cylinder?

The Hydraulic Drilling Rig cylinder is used on anchor drilling rigs, rock drilling rigs and tunnel drilling rigs for mine drilling, bolting, mesh support and mine exploring.