252101139 hose for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Part No：252101139
Product Type：Hydraulic Rubber Hose
Applicable Equipment：XCMG ZL50G / ZL50GL 5 Ton Wheel Loader
Core Technology：Steel wire braid reinforced multi-layer rubber composite
Material：NBR oil-resistant inner rubber, steel wire braid, CR wear-resistant outer rubber
Hose Inner Diameter：16mm
Hose Outer Diameter：26mm
Working Pressure：18MPa
Burst Pressure：54MPa
Proof Test Pressure：27MPa
Fitting Thread：G5/8 inch
Minimum Bend Radius：120mm
Working Temperature Range：-40℃ ~ +100℃
Weight：1.12kg
Oil Medium：Mineral based hydraulic oil
Application：Hydraulic oil transmission for loader cooling and hydraulic circuit

• Premium NBR inner rubber, excellent oil resistance, stable performance with long-term hydraulic oil contact, hardly swell or degrade under continuous oil immersion.
• Multi-layer steel wire braid reinforcement, good pressure resistance, capable of absorbing instantaneous pressure spikes caused by loader bucket impact during loading operation.
• Thickened outer rubber cover, outstanding wear resistance, anti-ozone and anti-UV performance, greatly slow rubber aging for long-term outdoor construction service.
• Stable composite bonding between rubber and steel wire, reduce risk of layer separation under long time vibration, avoid hidden failure inside hose.
• OEM-level dimension and end fitting specs, fully match original pipeline layout, simple installation and replacement without modifying frame or pipe route.
• Good bending flexibility, convenient routing around frame and cooling components without excessive bending stress; meets minimum bend radius requirement to extend service life.

FAQ 

Q1：What signs mean the rubber hose needs replacement?
A1：Surface cracking, blistering, oil seepage, outer rubber peeling, bulging when pressurized, steel wire exposed after rubber damage, obvious deformation after repeated pressure impact.

Q2：What should be noted during rubber hose installation?
A2：Avoid sharp bending and twisting; keep away from sharp metal edges and high-temperature parts; reserve enough space for hose movement under vibration; fix with clamps properly and check leakage after pressure test. Never install the hose under forced tension.

Q3：What are common causes of rubber hose damage?
A3：Abrasion by gravel; over-bending installation; high-temperature aging; excessive pressure impact; cuts by sharp debris; long-term ozone corrosion in open-air working environment.

Q4：Can leaking rubber hose be repaired and reused?
A4：Not recommended. Once the rubber or wire reinforcement is damaged, repair cannot restore original pressure resistance. Even temporary sealing, hidden risk of burst still exists under pressure impact. Replace with new hose directly.

Q5：How to inspect rubber hose during daily maintenance?
A5：Check hose surface for cracks, blisters and oil seepage, inspect outer rubber wear condition before heavy load work. Check whether the fixed clamp is loose. Focus on the bending section and two ends near fittings, these areas are most prone to failure.

Q6：What failures will a failed rubber hose cause?
A6：Hydraulic oil leakage leads to pressure drop, cooling and hydraulic system performance decline. Severe burst may cause sudden oil loss, resulting in loader action failure, oil contamination, and bring safety hazards for operators.