Hengshui Zhehan Rubber & Plastic Products Co., Ltd. has manufactured high-pressure hoses for construction machinery for years, supplying replacements and custom assemblies to equipment owners, service workshops, and parts distributors. This High-pressure Oil Hoses for Construction Machinery and Equipment was developed to serve a wide range of construction machines — not one specific model. It uses an HNBR inner tube that holds up better at elevated temperatures than many standard nitrile tubes, combined with a dual-layer steel wire braid that provides consistent pressure containment. We keep common inner diameters in regular stock and can build complete assemblies with the end fittings your machines require. If you want to request a sample, discuss your fleet’s hose specifications, or receive a formal quotation with lead time, send us your pressure and dimension requirements and we’ll respond with a practical recommendation.
This High-pressure Oil Hoses for Construction Machinery and Equipment is engineered around the real demands of construction equipment: heavy loads, rapid pressure fluctuations, and continuous exposure to oil, heat, and job-site conditions. It targets the failures that drive up maintenance costs — burst lines, weeping fittings, and age-related cracks — by using a reinforcement structure that handles impulse fatigue and an inner tube that resists hardening over time. The result is fewer unplanned hose changes, more predictable maintenance intervals, and lower overall ownership cost for fleets running mixed machinery.
Excavators and digging equipment – Main hydraulic circuits, boom and arm cylinder lines that see constant high-pressure pulses. The hose stays sealed through digging cycles and resists abrasion from rock debris.
Loaders and compaction equipment – Hydraulic systems on wheel loaders and rollers that deal with start-stop loads and ground vibration. The outer cover withstands scuffing in dusty, outdoor environments.
Concrete pump trucks – High-pressure delivery lines and distribution valve circuits that experience frequent pressure swings and long continuous runs. The hose holds up under sustained pumping conditions.
Cranes and lifting equipment – Hydraulic lifting and telescoping circuits where hoses must flex through multiple angles without kinking. The hose’s pressure rating supports safe operation under rated lifting loads.
The dual-layer galvanized steel wire braid provides working pressures from 35 MPa to 80 MPa, with a burst pressure exceeding 200 MPa. This gives a wide safety margin over normal system pressures and helps the hose survive the pressure spikes common in construction equipment.
The braid angle and adhesion between layers are optimized to handle cyclic loading. The hose is rated for more than 500,000 impulse cycles, reducing the fatigue-related failures that shorten hose life on machines with frequent start-stop and directional changes.
The HNBR inner tube operates reliably from -40 °C to 150 °C and resists degradation from hydraulic oils and lubricants. In outdoor storage and hot engine bay environments, the tube holds its properties longer, resisting the hardening and cracking seen in standard nitrile at elevated temperatures.
The hose is built with a controlled bend radius that makes it practical for the confined spaces on modern construction equipment. It fits the hydraulic layout of over 95% of mainstream machine models without kinking or flow restriction.
The inner tube and cover are bonded without air gaps, and the cover uses a chlorosulfonated polyethylene (CSM) compound that resists abrasion from gravel, job-site debris, and mechanical scuffing. When assembled with matched precision fittings, the hose maintains a reliable seal over its service life.
|
Parameter |
Detail |
|
Working Pressure |
35 MPa – 80 MPa (custom higher ratings available) |
|
Inner Diameter |
6 mm – 51 mm (full range of standard sizes) |
|
Length |
Standard 1 m – 20 m per piece; custom lengths on request |
|
Construction |
Inner tube: HNBR oil-resistant rubber; Reinforcement: high-strength galvanized steel wire braid; Cover: CSM weather- and abrasion-resistant rubber |
|
Temperature Range |
-40 °C to 150 °C |
Installation: Route the High-pressure Oil Hoses for Construction Machinery and Equipment without twisting, stretching, or kinking. Never exceed the rated working pressure or temperature. Check fitting tightness before commissioning, and always perform a pressure test after installation.
Routine inspection: Look for cover damage, exposed reinforcement, or swelling at fittings during regular service intervals. Replace any hose that shows these signs immediately to prevent sudden failures.
Service life extension: Keep the hose away from strong acids, alkalis, sharp edges, and open flames. Drain residual oil before long-term storage. Store hoses coiled in a dry, ventilated area. Proper care can extend hose life by 50% or more.
Protection: In areas with high abrasion or friction, add protective sleeving to prevent premature cover wear.
Q: What is the minimum order quantity?
A: For standard stock sizes, the minimum order is 10 pieces. We support small-batch purchases for trials and repairs. Bulk orders qualify for tiered pricing, and stock items normally ship within 48 hours.
Q: Do you offer custom hose assemblies?
A: Yes. We can supply the hose with the exact end fittings your equipment requires — metric, BSP, JIC, flanges, or custom adapters — and we also provide OEM services with your brand and logo printed on the cover.
Q: How do I select the right hose for my machine?
A: Our technical team can help. Provide us with your machine model, the working pressure of the circuit, or the dimensions of the existing hose (inner diameter and length), and we will recommend a suitable replacement and quote accordingly.
Q: What warranty do you provide?
A: We provide a 12-month warranty against material and manufacturing defects under proper use. If a covered quality issue occurs, we will replace the hose at no charge.
Q: Can I test a sample before placing a large order?
A: Yes. We encourage customers to test sample assemblies under their actual working conditions. Just request a sample when you contact us, and we will arrange it.
Q: How can I get a quotation or technical support?
A: Reach out by phone or email with your required inner diameter, working pressure, length, and fitting specifications. We will provide a detailed quotation and can arrange a technical discussion or on-site support if needed. Hengshui Zhehan is ready to help you keep your construction fleet running with dependable hydraulic hose assemblies.
Address
No. 7126, Zhanggehou Rubber & Plastic Base, Jingzhou Town, Jing County, Hengshui City, Hebei Province, Chinaa
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