Bending Arm for Servo Bending Units | Component Specifications

Product Specifications

Technical details and manufacturing context for Bending Arm

Definition

The Bending Arm is a critical component within the Servo Bending Unit, responsible for executing the precise bending motion on workpieces. It translates the rotational force from the servo motor into linear or angular displacement to deform materials like metal sheets, tubes, or wires to specific angles and radii as programmed. The arm is actuated by a servo motor through a linkage or gear system. It moves along a controlled path, applying force at a designated point (the bending die or tool) onto the workpiece held in position. Its motion, speed, and force are precisely regulated by the unit's control system to achieve accurate and repeatable bends. This component is typically manufactured from alloy steel or hardened tool steel, with material grades such as 42CrMo4, and surface hardness in the range of HRC 50–55 for wear resistance. The rated bending force ranges from 50 to 200 kN, and the maximum bending angle is 0–120 degrees. Positioning accuracy is ±0.05 mm, and repeatability is ±0.02 mm, both referenced to ISO 230-2. The operating pressure is 1.0–1.6 MPa, and the operating temperature range is -10 to 60 °C. The protection class is IP54–IP65 (IEC 60529). The mounting interface follows ISO 9409-1. Weight varies from 15 to 60 kg depending on size and configuration. These values are directory reference ranges and must be confirmed for the specific model and application. Always verify with the legal manufacturer or supplier.

Working Principle

The Bending Arm is driven by a servo motor through a linkage or gear system. The motor's rotational motion is converted into a controlled linear or angular movement of the arm. The arm applies force at a designated point on the workpiece, which is held in position by the bending unit. The control system regulates the arm's motion, speed, and force to achieve the desired bend angle and radius. The arm's path is precisely controlled to ensure repeatable bending accuracy.

Common Materials

Alloy Steel, Hardened Tool Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Bending Force	50–200 kN	Force range for standard bending operations
Maximum Bending Angle	0–120 °	Angle range for typical bending profiles
Positioning Accuracy	±0.05 mm	Ensures precise bending repeatabilityISO 230-2
Repeatability	±0.02 mm	Consistent performance over cyclesISO 230-2
Operating Temperature Range	-10–60 °C	Outside this range performance may degrade
Protection Class	IP54–IP65	Protection against dust and water jetsIEC 60529
Material Grade	42CrMo4	High-strength alloy steel for durabilityDIN EN 10083-3
Surface Hardness	HRC 50–55	Wear resistance for long service lifeISO 18265
Weight	15–60 kg	Depends on size and configuration
Mounting Interface	ISO 9409-1	Standardized flange for easy integrationISO 9409-1

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Arm Linkage Part
Connects the servo actuator to the bending tool, transmitting force and motion.

Material: Alloy Steel
Tool Mounting Interface Part
The standardized connection point for attaching various bending dies or tools.

Material: Hardened Steel
Position Sensor Target Part
A feature (e.g., flag, magnet) that interacts with sensors to provide real-time arm position feedback to the controller.

Material: Steel or Composite

Applied To / Applications

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

Servo Bending Unit

View system integration details

Manufacturers of Bending Arm

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Frequently Asked Questions

What materials are used for the Bending Arm?

The Bending Arm is typically made from alloy steel or hardened tool steel. A common material grade is 42CrMo4, with surface hardness in the range of HRC 50–55 for wear resistance.

What is the rated bending force range?

The rated bending force for standard operations is between 50 and 200 kN. This is a reference range; the exact value depends on the specific model and application.

What is the positioning accuracy and repeatability?

The positioning accuracy is ±0.05 mm, and repeatability is ±0.02 mm, both referenced to ISO 230-2. These values ensure precise and consistent bending results.

What standards apply to the Bending Arm?

Relevant standards include ISO 230-2 for positioning accuracy and repeatability, IEC 60529 for protection class, and ISO 9409-1 for the mounting interface. Always verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Max 300 bar
other spec:	Max bending force: 50 kN, Stroke length: 0-200 mm, Positioning accuracy: ±0.1 mm
temperature:	-20°C to 80°C

Bending Arm

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