Ningbo Tianyu Machinery Equipment Co., Ltd.
11
2026
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03
What Is a Servo Reducing Machine in Bushing Manufacturing?
SEO Article
Automotive suspension bushings typically consist of rubber bonded between an inner metal tube and an outer sleeve.
To achieve the correct interference fit and dimensional accuracy, manufacturers often use a diameter reducing process during production.
A reducing machine compresses the outer metal sleeve, slightly decreasing its diameter and creating the required mechanical properties for installation.
In modern production lines, servo-driven reducing machines are increasingly used to improve process control and repeatability.
Principle of Diameter Reducing
During the reducing process, a tooling system applies radial compression to the outer metal sleeve of the bushing.
The compression reduces the sleeve diameter while maintaining the structural integrity of the rubber-metal bond.
The final dimensions must remain within tight tolerances to ensure proper installation in suspension arms or housings.
Advantages of Servo Reducing Machines
Servo reducing machines use servo motors to control the deformation process.
This provides several advantages compared with conventional mechanical reducing equipment.
Precise Displacement Control
Servo systems allow precise control of the reducing stroke and deformation depth.
Stable Process Repeatability
Digital motion control ensures consistent deformation results across large production batches.
Process Monitoring
Force and displacement data can be recorded to detect abnormal conditions during production.
Applications in Automotive Production
Servo reducing machines are commonly used in the production of:
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control arm bushings
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subframe bushings
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suspension mounts
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rubber-metal isolation components
Because these components directly influence vehicle NVH performance, maintaining dimensional accuracy is essential.
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