129883A1 Boom Assembly – Case 580 L / 580 L Series 2 / 580 M

The 129883A1 Boom Assembly is a high-strength replacement boom designed for Case 580 L, Case 580 L Series 2, and Case 580 M backhoe loaders.
This heavy-duty boom is engineered for digging, lifting, trenching, demolition, and material handling, providing excellent durability and performance under tough jobsite conditions.

Built with reinforced high-tensile steel, this boom assembly offers long service life, stable structural integrity, and reliable performance for all types of groundwork and excavation tasks.

Function of the Boom Assembly

The boom is one of the most critical structures of a backhoe. It performs:

• Lifting and lowering of the dipper/stick

• Providing reach and depth for excavation

• Supporting hydraulic cylinders

• Transferring digging force to the ground

• Stabilizing the backhoe during heavy digging

• Handling trenching, loading, and demolition loads

A strong boom ensures safe, stable, and efficient operation.

Key Features & Advantages

• Heavy-duty reinforced structure for long-term durability

• Built with high-tensile alloy steel

• Precision-aligned pivot points for smooth operation

• Designed to handle high torque & digging force

• Strong welds and reinforced boom sections

• Compatible with Case original pins & bushings

• Suitable for all ground conditions – soil, clay, sand, rock (soft/medium)

• Improves digging stability & lifting performance

� Common Symptoms Indicating Boom Needs Replacement

Replace the boom assembly if you notice:

• Major cracks or structural fractures

• Bent boom arms due to overload

• Severe wear at boom-to-dipper pivot points

• Weld joint failure

• Reduced digging stability

• Excessive play in boom movement

• Hydraulics cannot maintain proper force due to structural issues

A damaged boom is unsafe and may lead to machine collapse or hydraulic failure.

Why Choose HSA Boom Assembly?

• High-quality HSA-manufactured / reinforced structure

• Designed according to Case 580 OEM dimensions

• Stronger durability than many aftermarket brands

• Heavy-duty construction for construction, roadwork, agricultural & industrial use

• Reliable, stable, and ready for long-term operation

• Direct replacement – no modification needed

Compatible Models

• Case 580 L

• Case 580 L Series 2

• Case 580 M

Ideal for:

• Boom replacement

• Backhoe refurbishment

• Structural component repair

• Machine rebuilding

中文（长详情）

129883A1 原厂规格挖臂总成（Boom Assembly）– Case 580 L / 580 L2 / 580 M

129883A1 挖臂总成专为 Case 580 L、580 L Series 2、580 M 机型设计。
采用 高强度钢材 + 加固焊接结构，适合长期用于挖掘、起重、挖沟、拆除、装载等各种重型作业。

挖臂是挖掘机后臂结构的核心部件，承受巨大的挖掘力与扭力，因此品质必须达到高标准。

挖臂主要功能

• 支撑挖斗杆（Dipper / Stick）

• 提供挖掘深度与作业半径

• 承受挖掘时的垂直/水平扭力

• 传递液压缸力量至地面

• 稳定整台挖掘装载机

• 提供起重、挖沟、装载等功能

挖臂结构强度直接影响机器安全与效率。

产品优势

• 重型结构（Heavy Duty）强化版

• 高张力钢材制造，抗弯抗扭

• 精准加工的销孔位置，动作顺畅

• 焊接加强，不易裂开

• 与原厂 Case 销子、衬套完全匹配

• 适用各种工地：泥土、粘土、沙地、碎石

• 提升挖掘稳定性和吊重能力

� 挖臂需要更换的症状

• 挖臂出现裂纹、断裂

• 结构变形、弯曲

• 销孔磨损严重、间隙大

• 焊缝损坏

• 整机挖掘时不稳定

• 挖掘力明显下降

损坏的挖臂使用会造成严重安全隐患。

为什么选择 HSA 出品？

• 高品质加固结构

• 严格按 Case 原厂尺寸制造

• 适合长期重载作业

• 强度高、寿命长

• 安装直接替换，无需修改

适用机型

• Case 580 L

• Case 580 L Series 2

• Case 580 M

适用于挖臂更换、整机翻新、结构维修。