252102004 high pressure hose for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Part Number：252102004
Product Name：High Pressure Hose Assembly
Applicable Model：XCMG ZL50G, ZL50GL Wheel Loader
Material：Oil-resistant rubber inner tube, multi-layer steel wire reinforcement, wear-resistant outer rubber, steel crimping fitting
Rated working pressure：OEM standard working pressure
Burst pressure：Specified multiple of rated pressure
Medium：L-HM46 anti-wear hydraulic oil
Working temperature：-20℃ ~ 80℃, suitable for all-season outdoor construction
Connection form：Steel crimped joint, matched with split flange and hydraulic port
Inspection Items：Impulse test, burst pressure test, sealing test, dimensional inspection, pull-off test

Application Scenarios

It is used for high-pressure hydraulic oil transmission of 5-ton wheel loader tilt cylinder, boom cylinder and multi-way valve oil circuits, suitable for earthwork, quarry mining, sand yard and bulk cargo loading high-intensity working conditions.

• Multi-layer steel wire reinforced structure, excellent pressure resistance and impulse fatigue resistance, can withstand repeated pressure surges generated during bucket impact and limit stroke, not easy to bulge or burst.
• High-quality rubber compound, good oil resistance, aging resistance and weather resistance, outer rubber layer resists sand abrasion and mud corrosion, stable performance in dusty, humid outdoor construction sites.
• Precision crimping process for end fittings, uniform compression force between fitting and hose, high pull-out resistance, effectively preventing joint slipping and oil leakage under vibration.
• Reasonable minimum bending radius design, flexible arrangement in narrow installation space, reduce additional tension and shearing stress on the hose during equipment movement.
• Standard interface design, compatible with original split flanges and hydraulic pipe fittings, easy for spare parts stocking, convenient for rapid replacement on site.
• Strict factory impulse and burst pressure inspection, each batch sampled for fatigue test, stable quality consistency, long service life under cyclic heavy-load operation.

FAQ 

Q1: Can this high pressure hose assembly work continuously above its rated working pressure?
A1: No. Long-time overpressure operation will cause irreversible expansion of the hose tube, loose steel wire layers, sharp reduction of fatigue life, and there is a risk of sudden burst, which may lead to oil spray and safety accidents.

Q2: What are the common causes of oil leakage of the high pressure hose assembly?
A2: It may be wear and cracking of outer rubber, fatigue cracking near the crimping joint, aging of inner rubber, excessive bending during installation, or scratches from sharp rock debris cutting the hose body.

Q3: What should be noticed before installation?
A3: Check the hose surface for cracks, bulges and scratches; confirm the flow direction and installation path; reserve enough bending clearance, avoid forced stretching, twisting and sharp-angle bending during installation.

Q4: Can a slightly leaking hose be repaired and reused?
A4: It is not recommended. Local repair cannot restore the original pressure resistance and fatigue performance. Hidden damage inside the steel wire layer still exists, and burst failure is very likely to happen under pressure. It is safer to replace the whole hose assembly.

Q5: What are the requirements for the hydraulic oil used with this hose?
A5: It is recommended to use L-HM46 anti-wear hydraulic oil. Dirty, deteriorated or water-emulsified oil contains hard particles, which will abrade the inner rubber layer and accelerate rubber aging.