Industry-Verified Manufacturing Data (2026)

Arm

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Arm used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Arm is characterized by the integration of Arm Cylinder Mounting Brackets and Boom Pivot Bushing. In industrial production environments, manufacturers listed on CNFX commonly emphasize High-strength steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The primary structural component of an excavator that connects the boom to the bucket and provides the main digging force.

Product Specifications

Technical details and manufacturing context for Arm

Definition
In excavators, the arm (also called the dipper arm or stick) is the intermediate structural member that connects the boom to the bucket. It pivots at the boom end and at the bucket end, allowing the operator to control the digging depth and bucket position. The arm's length and strength determine the machine's reach and digging force capabilities.
Working Principle
The arm is hydraulically actuated by one or more hydraulic cylinders mounted between the boom and the arm. When hydraulic pressure extends or retracts these cylinders, the arm rotates around its pivot point on the boom, moving the bucket closer to or farther from the machine. This provides the primary motion for digging and material placement.
Common Materials
High-strength steel
Technical Parameters
  • Length of the arm from boom pivot to bucket pivot (mm) Standard Spec
Components / BOM
  • Arm Cylinder Mounting Brackets
    Provide attachment points for hydraulic cylinders that actuate the arm
    Material: Cast steel
  • Boom Pivot Bushing
    Allows rotational movement between arm and boom
    Material: Bronze alloy
  • Bucket Linkage Mounting Points
    Provide attachment for bucket linkage mechanism
    Material: Forged steel
  • Reinforcement Plates
    Strengthen high-stress areas of the arm structure
    Material: High-strength steel plate

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Arm.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Factories Producing Arm

Verified manufacturers with capability to produce this product in China

✓ 92% Supplier Capability Match Found

S Sourcing Manager from United States Jan 23, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Procurement Specialist from United Arab Emirates Jan 20, 2026
★★★★☆
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Arm meets all ISO standards. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Australia Jan 17, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Arm arrived with full certification."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

5 sourcing managers are analyzing this specification now. Last inquiry for Arm from UAE (1h ago).

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Frequently Asked Questions

What is Arm?

In the Machinery and Equipment Manufacturing sector, Arm refers to The primary structural component of an excavator that connects the boom to the bucket and provides the main digging force..

Which factories produce Arm in China?

CNFX has identified 28 professional manufacturers for Arm.

What materials are used in Arm?

High-grade Arm models feature High-strength steel.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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