Overview
SIST EN ISO 18752:2025 defines international requirements for wire- or textile-reinforced rubber hoses and hose assemblies designed for hydraulic applications. Developed by the European Committee for Standardization (CEN), this standard focuses on hoses intended for single-pressure use, covering a nominal size range from 5 to 102 mm. SIST EN ISO 18752:2025 provides a structured classification system for hoses, encompassing ten pressure classes, four grades based on impulse performance, and seven types distinguished by construction.
This standard applies to hoses and hose assemblies used with various hydraulic fluids, including oil-based and water-based varieties, across typical temperature ranges. It establishes material, performance, and testing requirements but does not specify requirements for the hose fitting connection ends.
Key Topics
-
Classification System
- Ten hose classes, each identified by a single maximum working pressure across all sizes
- Four grades (A, B, C, D) denoting impulse resistance
- Seven type variants (standard and compact for each grade)
-
Material and Construction
- Hoses feature a hydraulic-fluid-resistant rubber lining, with reinforcement from steel wire or textile layers
- Ozone, abrasion, and weather-resistant rubber cover options
-
Fluid Compatibility and Temperature Ranges
- Suitability for oil-based hydraulic fluids (HH, HL, HM, HR, HV per ISO 6743-4) from −40°C to +100°C for certain types, and up to +120°C for others
- Compatibility with water-based fluids (HFC, HFAE, HFAS, HFB) from −40°C to +70°C
- Use with water between 0°C and +70°C
-
Performance Requirements and Testing
- Hydrostatic, vacuum, impulse, ozone, and abrasion resistance tests
- Verification of hose marking, minimum bend radius, adhesion strength, and fluid resistance
- Routine and type testing requirements to ensure quality and consistency
-
Marking and Identification
- Mandatory labeling of hoses and assemblies with manufacturer details, standard number, type, size, pressure rating, and date codes
Applications
SIST EN ISO 18752:2025 is essential in industries where reliable hydraulic power transmission is critical. Typical practical applications include:
- Construction Equipment
- Hydraulic systems in excavators, loaders, cranes, and other heavy machinery
- Industrial Machinery
- Manufacturing automation, presses, and specialized machinery utilizing hydraulic drives
- Agriculture
- Tractors, harvesters, and agricultural attachments with hydraulic controls
- Mining and Extraction
- Drilling rigs, hydraulic lifts, and conveying systems
- Transportation and Logistics
- Hydraulic equipment in trucks, trailers, rail, and cargo handling
By adhering to SIST EN ISO 18752:2025, operators reduce the risk of hose failure, enhance equipment safety, optimize fluid compatibility, and ensure consistent hose performance under demanding conditions.
Related Standards
SIST EN ISO 18752:2025 references and aligns with several key international standards for hydraulic hoses and their testing:
- ISO 6743-4 – Classification of lubricants, including hydraulic fluids
- ISO 1402 – Hydrostatic testing methods for hoses
- ISO 4671 – Measurement of hose dimensions and lengths
- ISO 6803 – Hydraulic-pressure impulse test procedures
- ISO 7233 – Vacuum resistance in hoses
- ISO 7326 – Ozone resistance assessment
- ISO 8033 – Adhesion testing between hose components
- ISO 10619-1/2 – Flexibility and stiffness measurements
- ISO 8331 – Guidelines on packaging and storage of hoses
Organizations selecting hydraulic hoses and assemblies in accordance with SIST EN ISO 18752:2025 are assured of alignment with up-to-date performance, safety, and reliability criteria, as set by global industry standards.
Keywords: SIST EN ISO 18752:2025, hydraulic hoses, wire-reinforced hoses, textile-reinforced hoses, hydraulic hose assemblies, CEN standards, rubber hoses for hydraulics, hydraulic fluid compatibility, hose performance testing, international standardization for hoses.
