Pin Shaft

This China Pin shaft produced by YS STEEL is subjected to continuous shear force, alternating impact, and friction loss during operation. If its performance is insufficient, it will directly cause the joint clearance to increase, abnormal running sounds, and in severe cases, even lead to fracture and shutdown.

The mechanical components of YS STEEL's engineering machinery, such as the pin shaft, are produced through their own metal processing lines and cover various structures including straight rod pin shafts, stepped pin shafts, pin shafts with holes, and flange pin shafts. They have a wide size range and can be adapted to different tonnage engineering and mining equipment.

Process Advantages

1. Differentiated forging and heat treatment

The overall quenching and tempering of the alloy steel ensures the core part's toughness, while the induction hardening of the working surface enhances the surface hardness. This avoids the core part being too brittle and reduces the risk of fracture under heavy-load impact.

2. Precise grinding of the mating surface, strict control of assembly clearance

The key hinge joint surfaces are precisely ground, and the size tolerances are strictly controlled to reduce joint shaking and abnormal sounds, reduce abnormal wear of the pin shaft and bushing, and extend the component's lifespan.

3. Non-destructive testing to eliminate internal defects

Magnetic particle testing screens for microcracks and layers generated during forging and heat treatment, intercepting defective parts at the factory, and reducing sudden failures on the construction site.

4. Multiple surface treatments suitable for multiple working conditions

This Pin shaft supports blackening, galvanizing, and chroming processes, and is suitable for ordinary construction sites, humid corrosive, and dusty mining environments, delaying component rusting and wear.

5. Customized non-standard development

It can be processed with oil grooves, oil holes, special steps, and is produced based on drawings or old parts samples, meeting the needs of importing parts substitution and developing new machine parts.

Notes for Attention

1. Clean the debris and burrs inside the pin holes before assembly.

2. Ensure that the hinge parts are continuously lubricated with grease.

3. Strictly control the actual load of the equipment and prohibit long-term operation beyond the equipment's rated load.

4. Confirm the hardness match between the pin shaft and the bushing during selection.

5. Conduct regular inspections of the hinge parts.

6. Apply anti-rust oil during storage and ensure proper moisture-proof packaging.

Our Services

1. Flexible supply model

Standard parts are available for immediate delivery. We support sample orders, batch frame orders, and can supply either the pin shaft alone or in combination with hinge accessories for export packaging.

2. Non-standard measurement and customization

You can have the parts manufactured based on the old parts alone, without the need for complete drawings. Customizable tolerances, oil grooves, oil holes, and anti-corrosion surface processes can be provided.

3. Full set of project documentation support

We can provide material, heat treatment, and flaw detection reports. We support third-party testing to meet the requirements of overseas projects.

4. Export packaging and documents

Anti-rust treatment, export packaging with wooden boxes or iron pallets, and provide a complete set of customs clearance documents, suitable for sea and air transportation.

Product Core Specifications

Successful Cases

• Southeast‑Asia Construction‑Machinery OEM Project (2025): 138 tons of multi‑size alloy‑steel pins were supplied to OEM machinery manufacturers in Thailand and Vietnam for excavator and loader hinge joints. Stable dimension and qualified service‑life performance secured a long‑term OEM supply agreement.

• Middle‑East Mining‑Crusher Spare‑Parts Project (2025): 112 tons of crusher‑ and mining‑machine‑special pins were delivered to machinery traders in Saudi Arabia and Jordan for heavy‑load dusty conditions. Complete inspection documents and stable lead‑time drive steady repeat‑order volume.

• African Construction‑Equipment Repair‑Parts Project (2024): 86 tons of standard & non‑standard pins were provided for spare‑part traders in Nigeria as cost‑effective alternatives to imported repair parts, lowering total maintenance cost and triggering follow‑on bulk orders.