On the market, shock absorber bottom cap sealing equipment usually falls into three groups: dedicated tooling, automated control systems, and fixed-point press sealing.
Dedicated Sealing Tooling
Sichuan Ningjiang Shanchuan Machinery Co., Ltd. makes a shock absorber sealing tooling that includes a frame, load table, sealing mechanism, and lifting mechanism. By changing sealing rollers with different sealing face shapes, the machine can stamp the end face of the shock absorber oil reservoir into a positive-angle, flat-angle, or negative-angle flange. It is mainly used to seal the port end of the shock absorber oil reservoir.
Automated Control Sealing Devices
A PLC-controlled shock absorber sealing device with an elastic buffer base uses a PLC system to automate sealing. This raises production efficiency and seal quality. The elastic buffer base adapts to shock absorber assemblies of different lengths and absorbs the impact from sealing pressure, which helps prevent the bottom cap and bottom valve from deforming under load. A split sleeve drives a movable ring to clamp and position the part. This improves seal tightness and reduces oil leakage.
A shock absorber sealing device jointly developed by Wanxiang Qianchao Co., Ltd. and Zhejiang Wanxiang Marelli Shock Absorber Co., Ltd. includes a drive unit, mounting seat, flattening unit, and bending unit. It addresses poor sealing, complex sealing structures, and complex processes.
Fixed-Point Press Sealing Equipment
Four-point press sealing equipment places the shock absorber assembly on the sealing machine base. A cutter disc rack moves the cutter disc down, and the cutter heads press to complete the seal.
If sealing rollers, pressure heads, or fixture parts wear out, Hansheng Automation can machine replacements from customer drawings in single pieces or small batches.


