The primary suspension of a railway bogie is the stage that connects the axle boxes (wheel bearing housings) to the bogie frame. Rubber primary suspension elements at this interface manage vertical wheel loads, lateral guidance forces, and longitudinal traction/braking forces while providing noise and vibration isolation. Our rubber primary suspension components are engineered to meet EN 45545-2 fire safety requirements and are applicable to US transit procurement under FTA rolling stock technical requirements.
A rubber primary suspension element must simultaneously manage multiple load cases:
See our related products: Chevron Springs provide an alternative primary suspension solution with integrated lateral guidance. Railway Bogie Spare Parts covers the broader bogie component range.
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