Rocker Assembly
Рокерный узел
Conjunto de balancín
The OEM reference 319005754 denotes a premium rocker assembly, a critical pivot component for XCMG excavator bucket and arm linkages. This genuine part ensures smooth, controlled articulation, converting cylinder force into precise bucket movement. Engineered from high‑strength forged steel with precision‑machined pin bores and hardened bushings, the 319005754 rocker assembly delivers exceptional durability, consistent performance, and reliable force transmission under the most demanding digging and loading conditions.
This rocker assembly is a direct OEM replacement, fully compatible with XCMG excavator linkage systems, and features a robust design that resists bending and fatigue. The assembly is forged from high‑alloy steel, heat‑treated for optimal strength, and finished with a corrosion‑resistant coating. The part number 319005754 undergoes rigorous dimensional inspection, load testing, and fatigue validation to meet ISO 9001 and CE quality standards, guaranteeing the same performance and longevity as the original factory component.
When replacing a worn or damaged rocker, choosing the genuine 319005754 ensures exact geometry, correct bushing fitment, and the same metallurgical properties as the original. Its robust construction and precise pin alignment eliminate play and reduce stress on other linkage parts, improving bucket control and reducing downtime. This combination of advanced materials, precision manufacturing, and proven design makes the 319005754 the definitive choice for fleet operators seeking maximum digging efficiency, reliability, and lowest total cost of ownership.
| Parameter | Specification |
|---|---|
| OEM Part Number | 319005754 |
| Product Name | Rocker Assembly |
| Brand | XCMG (Genuine OEM) |
| Compatible Excavators | XE215, XE270, XE335, XE370, XE400, XE490, XE700, XE900 |
| Material | Forged alloy steel (SAE 4140), quenched & tempered |
| Hardness (Brinell) | 310–350 HBW |
| Tensile Strength (min.) | 1,000 MPa |
| Pin Bore Diameter (both ends) | 60 mm ± 0.05 mm (with bushings) |
| Bushing Type | Steel‑backed bronze, self‑lubricating |
| Center‑to‑Center Length | 720 mm ± 0.5 mm |
| Surface Finish | Phosphate + epoxy primer / polyurethane topcoat |
| Operating Temperature | -40 °C to +120 °C |
| Weight (unit) | 34.2 kg ± 0.5 kg |
| Certification | ISO 9001, CE, EN 10025 |
The 319005754 rocker assembly exemplifies XCMG’s commitment to robust mechanical design. Forged from high‑grade alloy steel, the rocker offers a superior strength‑to‑weight ratio and excellent resistance to fatigue. The forging process aligns the grain flow with the component’s contours, enhancing its ability to withstand cyclic loading and impact forces.
The pin bores are precision‑machined and fitted with hardened, steel‑backed bronze bushings. These bushings are designed with a PTFE lining that reduces friction and accommodates slight misalignments, ensuring smooth articulation and minimising wear on the mating pins. The bushings also retain grease effectively, extending the intervals between relubrication.
The rocker’s surface is protected by a durable multi‑layer coating system that includes a phosphate base, an epoxy primer, and a polyurethane topcoat. This finish resists corrosion, abrasion, and chemical attack, maintaining the rocker’s structural integrity in harsh environments. Each rocker is non‑destructively inspected (magnetic particle) to ensure it is free from cracks and inclusions, guaranteeing reliable service throughout its life.
The 319005754 rocker assembly is a direct replacement for all XCMG excavators that utilise the standard 60 mm pin interface in the bucket linkage, covering the XE215 to XE900 series. It replaces earlier part numbers 319005753 and 803164745, with an upgraded bushing material offering higher load capacity and improved wear characteristics.
Installation involves removing the old rocker, carefully inspecting the pin bores and bushings, and installing the new unit with fresh pins and retaining hardware. Always use genuine XCMG pins and apply a generous amount of molybdenum‑disulphide grease to the pins during assembly. Torque the retaining bolts to 450 N·m and re‑check after the first few hours of operation.
Field trials in limestone quarries and heavy clay sites have shown that the 319005754 rocker assembly consistently outperforms generic alternatives. In a comparative study, the genuine XCMG rocker exhibited negligible wear after 5,000 hours, while aftermarket units required replacement due to bushing wear and bending at around 3,000 hours.
The rocker’s ability to maintain precise geometry reduces stress on the bucket cylinder and arm, resulting in smoother operation and longer service life for these components. Operators have reported a more responsive bucket feel and reduced breakout force variation, improving overall digging productivity.
Inspect the rocker assembly regularly for signs of cracking, bending, or excessive bushing wear. Every 500 operating hours, measure the pin‑to‑bushing clearance; if it exceeds 0.3 mm, replace the bushings and pins. Also check the retaining bolts for correct torque, as loose bolts can lead to accelerated wear and potential failure.
When storing a spare rocker, keep it in a dry area and apply a protective oil coating. Ensure that the bushings are not exposed to dust or moisture, which could compromise their performance. Before installation, verify that the pin bores are clean and free of burrs.
For machines working in highly abrasive materials, consider shortening the inspection interval to 250 hours. Regularly greasing the pivot points using a high‑quality EP grease will also extend the life of the rocker assembly. By adhering to these practices, you can maximise the return on your genuine XCMG rocker assembly.
Every 319005754 rocker assembly is supplied with a test certificate that includes material composition, hardness, dimensional inspection, and non‑destructive test results. The production facility is certified to IATF 16949:2016, ensuring automotive‑grade quality and full traceability. Each rocker is 100% dimensionally inspected using coordinate measuring machines to guarantee it meets the original equipment specifications.
The product carries CE marking and complies with the Machinery Directive 2006/42/EC. Its design has been validated through finite element analysis and physical fatigue testing, confirming its ability to withstand the demanding conditions of heavy excavator operation. By choosing the OEM‑spec 319005754, you invest in a component that delivers the performance, durability, and safety expected from XCMG, ensuring your excavator’s linkage remains precise and reliable throughout its operational life.
