Spring Pin for Vibration-Proof Positioning

With elastic shrinkage during installation and automatic rebound expansion after entering the hole, Wanluo factory’s Spring Pin for Vibration-Proof Positioning forms a tight interference fit with the pin hole, realizing zero-clearance self-locking positioning without auxiliary locking parts. Featuring automatic tolerance adaptation, strong vibration resistance, fatigue resistance and high assembly efficiency, it perfectly solves the problems of loose fitting of rigid pins and complex installation of traditional locking fasteners. It is a core standardized fastener widely used for mechanical transmission positioning, component anti-offset and dynamic structure fastening.

Structural Features & Manufacturing Technology

The Spring Pin for Vibration-Proof Positioning integral high-precision strip stamping and rounding forming process, with a continuous longitudinal slit on the pin body and a complete cylindrical elastic structure. Both ends are precisely chamfered and smoothly polished, which is convenient for rapid press-in installation and avoids scratching the inner wall of the pin hole. The elastic pin body has excellent shrinkage and rebound performance, which can adapt to slight hole diameter tolerance errors and achieve close interference fit positioning. Made of high-quality high-carbon spring steel, manganese steel and stainless steel materials, the products undergo integral quenching and tempering heat treatment to ensure high surface hardness and core toughness. The surface is finely treated with anti-corrosion and anti-rust processes, with smooth texture and no burrs. The overall structure features uniform elasticity, stable mechanical performance, not easy to deform or fail after long-term repeated extrusion and vibration, meeting high-standard industrial assembly requirements.

Product Parameter

Core Advantages & Industrial Applications

1. Innovative elastic self-locking design, no need for auxiliary split pins, nuts or other anti-loosening accessories. The automatic rebound interference fit forms permanent tight positioning, effectively solving the loosening problem of fasteners in long-term vibration working conditions.

2. Strong tolerance adaptability, which can adapt to minor errors in the aperture of processed parts. Compared with rigid parallel pins with extremely high hole precision requirements, spring pins have lower assembly difficulty and higher on-site fault tolerance, greatly improving installation efficiency.

3. Excellent mechanical comprehensive performance. After special spring steel heat treatment, the pin body has both high hardness and elastic toughness, with strong shear resistance and impact resistance. It will not break or deform during frequent mechanical operation and repeated disassembly.

4. Integrated positioning and anti-loosening function, compact structure and no assembly interference. It simplifies the traditional combined positioning and locking structure, reduces the number of parts, and optimizes the overall assembly space of mechanical equipment.

5. Spring Pin for Vibration-Proof Positioning ia wide industrial application range, suitable for various dynamic mechanical assembly scenarios, widely used in automobile manufacturing, engineering machinery, hydraulic pneumatic components, mold accessories, electrical equipment and automated production equipment.

Global Logistics Service System

We provide full-chain universal logistics solutions for all product orders:

1. Multiple Shipping Methods : Sea freight, Air freight, International Express and Railway freight for different cycle demands

2. Professional Export Packaging : Moisture-proof, rust-proof and collision-proof export carton + pallet packaging, suitable for long-distance ocean transportation

3. Consolidated Shipment Service : Support mixed loading of bolts, nuts, rigging parts and customized hardware in one container, save your logistics cost

4. Full Tracking Service : Provide whole-process cargo tracking, customs clearance assistance and shipment progress notification