Our rubber engine hose is engineered to transmit hydraulic oil within engine assemblies and heavy-duty machinery. Built with a multi-layer composite structure, it consists of seamless inner rubber tube, two layers of high-tensile steel wire braided reinforcement and weather-resistant outer rubber cover. Manufactured strictly following international hydraulic standards, it delivers stable pressure resistance, outstanding flexibility and reliable sealing performance for automotive engines, construction machinery engines and industrial power equipment. It effectively transports hydraulic fluid while resisting oil corrosion, temperature fluctuation and continuous mechanical vibration under engine operating environments.
Product Specifications
|
Nominal Diameter |
Inside Diameter |
Reinforcement Diameter |
Outside Diameter |
Work Pressure |
Proof Pressure |
Burst Pressure |
Bend Redius |
Weight |
||
|
inch |
dash |
mm |
mm |
mm |
bar |
psi |
bar |
bar |
mm |
kgs/m |
|
3/8 |
-6 |
9.3-10.1 |
17.3-17.9 |
19.9-20.8 |
280 |
4060 |
560 |
1120 |
125 |
0.70 |
|
1/2 |
-8 |
12.3-13.5 |
20.8-21.4 |
23.4-24.2 |
280 |
4060 |
560 |
1120 |
180 |
0.83 |
|
5/8 |
-10 |
15.5-16.7 |
24.5-25.1 |
27.1-27.9 |
280 |
4060 |
560 |
1120 |
200 |
1.12 |
|
3/4 |
-12 |
18.6-19.8 |
27.8-28.4 |
30.4-31.2 |
280 |
4060 |
560 |
1120 |
240 |
1.43 |
|
1 |
-16 |
25.0926.4 |
35.1-35.7 |
38.3-39.1 |
280 |
4060 |
560 |
1120 |
300 |
2.00 |
|
1-1/4 |
-20 |
31.4-33.0 |
44.1-44.7 |
47.3-48.1 |
210 |
3045 |
420 |
840 |
420 |
2.80 |
|
1-1/2 |
-24 |
37.7-39.3 |
50.1-50.7 |
53.5-54.3 |
175 |
2540 |
350 |
700 |
500 |
3.40 |
|
2 |
-32 |
50.4-52.0 |
62.7-63.3 |
66.9-67.7 |
175 |
2540 |
350 |
700 |
630 |
4.25 |
Core Advantages
Superior Structural Flexibility
It utilizes a substrate with a low modulus of elasticity, allowing it to bend freely with minimal external force. Its dual-layer steel wire reinforcement forms a flexible support structure; during bending, the braided wires shift like hinges, thereby preventing structural failure. This characteristic enables the hose to flexibly navigate around compact engine components without the need for pre-formed elbows, facilitating flexible routing even within tight engine compartments.
Outstanding Anti-Fatigue Performance
With high elongation at break, the hose withstands continuous vibration and repeated bending during engine operation. It avoids crack formation and medium leakage under cyclic dynamic load, greatly extending service life. This characteristic makes the rubber engine hose suitable for long-term continuous operation of various power equipment.
Excellent Oil & Temperature Resistance
Specially formulated inner rubber liner offers strong resistance to engine hydraulic oil. The hose maintains stable performance under wide temperature variation generated by running engines, preventing aging, swelling or leakage caused by long-term contact with oil medium.
Durable Outer Protection
The outer rubber cover resists abrasion, ozone aging and outdoor weather erosion. It protects the steel wire reinforcement from external friction, dirt and ultraviolet damage when installed inside engine compartments.
Production Process
1. Inner Tube Extrusion: High-quality synthetic rubber raw materials are extruded to form a smooth, compact inner rubber liner, guaranteeing excellent oil resistance and medium tightness.
2. Steel Wire Braiding: Two layers of high tensile strength steel wire are precisely braided onto the inner tube under constant tension to build the pressure-bearing reinforcement layer.
3. Intermediate Rubber Coating: Adhesive rubber layer is coated between reinforcement layers to tightly combine each structural layer and avoid layer separation under pressure.
4. Outer Cover Extrusion: Wear-resistant outer rubber is extruded to fully wrap the reinforced structure.
5. Vulcanization Molding: The semi-finished hose undergoes high-temperature and high-pressure vulcanization. This process forms stable cross-linked molecular structure inside rubber, improving elasticity and structural compactness.
6. Strict Pressure Testing: Finished hoses go through proof pressure and burst pressure inspection. Unqualified products are eliminated to ensure consistent quality.
7. Cutting, Marking & Packaging: Qualified hoses are cut to customized lengths, printed with brand and specification marks, then packaged for shipment.
After-sales Service
Pre-shipment Inspection
Every batch of goods carries complete performance testing reports before delivery. We provide test documents for your customs clearance and quality verification.
Customization Support
We accept customized lengths, marking styles and matched connector solutions to satisfy diverse engine assembly demands.
Quality Feedback Support
If any quality problem caused by manufacturing defects occurs under normal working conditions, please provide photos, video and order information. Our team will respond within 24 hours and propose practical solutions.
Technical Guidance
Our engineering team offers free technical consultation about hose selection, assembly tips, installation requirements and proper operating parameters.
FAQ
Q: What working temperature range can this hose adapt to?
A: Normally, the working temperature ranges from -40℃ to +100℃. It fits most conventional engine hydraulic oil circulation environments.
Q: Can the hose be used for fuel transmission?
A: This hose is mainly designed for hydraulic oil. If you need fuel delivery hose, please consult our sales team for our dedicated fuel resistant hose model.
Q: What is the minimum bending radius during installation?
A: The minimum bending radius complies with international standard specifications. Do not bend the hose below the limited radius, otherwise internal steel wire structure may get damaged and shorten service life.
Q: Can you supply matching hose fittings together?
A: Yes. We can provide corresponding hydraulic hose fittings that perfectly match our product for one-stop procurement.
Q: How should we store unused rubber engine hoses?
A: Keep hoses in a cool, dry warehouse, away from direct sunlight, ozone sources, sharp objects and chemical solvents. Avoid heavy compression and excessive bending during storage.
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