Primary Conical Spring

The multi-layer conical metal rubber spring was developed for the development and popularization of light-duty pinless bogies used in suburban rolling stock.
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The multi-layer conical metal rubber spring was developed for the development and popularization of light-duty pinless bogies used in suburban rolling stock.

The structural feature of the conical rubber spring is that the rubber washer is combined with the metal ring. The advantage of this structure is that the size and mass are reduced, so there is no need to use a steel spring in this case, Hydraulic shock absorbers and spring guide cylinders; can also reduce the cost of technical repairs and maintenance in this area.

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