Crimp hydraulic fittings are permanent connection components for flexible hydraulic hoses, consisting of a precision-machined stem and a crimp sleeve. When radially compressed by a crimping machine, internal barbs bite deep into the hose reinforcement layer to form a high-strength mechanical interlock and full-circumference seal. They are the standard choice for high-pressure, high-vibration systems, delivering far better reliability than reusable fittings.
● Ultra-high pull-out resistance: Optimized multi-row barbs penetrate uniformly; pull-out strength exceeds hose burst rating, eliminating catastrophic blow-off hazards.
● Thick seamless sleeve: One-piece thick-walled sleeve ensures even crimp deformation with zero spring-back, maintaining stable clamping force under pressure pulsation.
● Long impulse fatigue life: Passes 1,000,000+ pressure impulse cycles, suitable for long-term heavy-duty operation.
● Precision sealing: Ground sealing cones and faces guarantee zero leakage at mating connections.
● Ready-to-use crimp data: Matched crimp diameter charts for all major hose brands, ensuring correct first-time assembly.
Construction machinery, mining equipment, injection molding machines, agricultural machinery, marine hydraulics, hydraulic power units.
Domestic top-3 excavator OEM: 400,000+ pcs supplied annually. Field failure rate stands at 0.018%, 85% lower than the industry average.
Australian mining fleet retrofit: Replaced budget crimp fittings. Average hose assembly service life extended from 7 to 19 months, cutting maintenance cost by 60%.
Q: Can Crimp Hydraulic Fittings be used with any hydraulic hose?
A: They fit standard-dimension hoses. Always confirm crimp specs for your specific hose model. We can help verify compatibility.
Q: Can crimp fittings be reused?
A: No. The sleeve is permanently deformed after crimping and cannot be safely reused on a new hose.
Q: What is the maximum working pressure?
A: Depends on size and hose type. Small 2-wire hose assemblies typically reach 350–400bar. Always follow the lowest-rated component in the system.
Q: What is the difference between crimp fittings and reusable fittings?
A: Crimp fittings are permanently deformed onto the hose using a crimping machine, providing superior pull-out strength, impulse resistance, and sealing reliability. Reusable fittings can be assembled with hand tools and are removable, but they offer lower pressure ratings and are more prone to loosening under vibration. For high-pressure, high-vibration systems, crimp fittings are the recommended choice.
Q: What is the difference between JIC 37° and DIN 24° crimp fittings?
A: JIC 37° flare is the American standard with a 37° sealing angle, widely used in North American hydraulic systems. DIN 24° cone is the German standard with a 24° sealing angle, common in European and Asian machinery. Both provide reliable metal-to-metal sealing when properly tightened. We offer both standards to suit your regional requirements.
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