Primary Suspension by HAMM Mount
The primary suspension is the lower stage of a railway bogie suspension system, connecting the wheelset axle boxes to the bogie frame. HAMM Mount specializes in all rubber element types used in this critical location: chevron spring stacks, conical rubber springs, cylindrical rubber bushings, and rubber-metal sandwich elements. The primary suspension must carry the full vehicle weight plus dynamic loads from track irregularities while providing spring and damping functions that ensure safe vehicle dynamics including hunting stability, curving performance, and derailment resistance. Our primary suspension elements are designed and tested to meet the requirements of EN 13913 (rubber springs for railway vehicles) and EN 45545-2 (fire protection on railway vehicles). We supply primary suspension elements for bogie platforms manufactured by Alstom, Siemens, Stadler, CRRC, TMH, and other major rolling stock builders.
Key Performance Characteristics
- Superior Vibration Damping: Optimized rubber compounds for maximum isolation efficiency
- High Load Capacity: Engineered for heavy-duty applications with consistent spring rates
- Wide Temperature Range: -45°C to +85°C operational capability
- Extended Fatigue Life: Exceeding 2.5 million cycles under standard testing
- Chemical Resistance: Resistant to oils, fuels, and common industrial chemicals
- Fire Safety: EN 45545-2 certified for railway applications
Applications
- Railway & Transit: Primary suspension, secondary suspension, bogie components
- Construction Equipment: Caterpillar, Komatsu, Volvo - excavators, bulldozers, loaders
- Mining & Heavy Industry: Mining trucks, crushers, conveyors, processing equipment
- Automotive: Engine mounts, transmission mounts, suspension components
- Marine & Power Generation: Engine mounting, generator set isolation
Quality & Certifications
- ISO 9001:2015 - Quality Management System
- EN 45545-2 - Railway Fire Safety (HL2 & HL3)
- ASTM Standards - Material testing compliance
- EN 13913 - Rubber springs for railway vehicles
