Editorial Technical Reference

Bending Arm Frame

This page explains how Bending Arm Frame is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The structural support component of a bending arm assembly that provides rigidity and mounting points for other parts.

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Product Specifications

Technical details and manufacturing context for Bending Arm Frame

Definition
The Bending Arm Frame is the foundational structural element within a Bending Arm Assembly, serving as the main chassis that supports and aligns all other components. It provides the necessary rigidity to withstand bending forces while offering precise mounting locations for the bending mechanism, hydraulic/pneumatic systems, and control components. The frame acts as a stationary or semi-stationary structural foundation that absorbs and distributes the reaction forces generated during the bending operation. It maintains geometric stability while other components (like the bending arm, dies, and actuators) perform the actual metal forming work. Typical materials include structural steel and cast iron. Key parameters to verify for a specific application include rated load capacity (500–2000 kg), bending arm length (300–1200 mm), frame width (150–500 mm), frame height (200–600 mm), material grade (Q235–Q345 per GB/T 700), surface treatment (hot-dip galvanizing 20–40 μm per ISO 1461), mounting hole diameter (10–20 mm), mounting hole tolerance (±0.1 mm per ISO 2768-m), flatness tolerance (0.5–1.0 mm per ISO 2768-m), weight (50–300 kg), operating temperature (-20 to 80 °C), and surface hardness (150–250 HB per ISO 6506-1). These values are reference ranges; always confirm model-specific values with the legal manufacturer or supplier. The frame's design must ensure proper alignment and load distribution to prevent premature wear or failure. Regular inspection for cracks, deformation, or corrosion is recommended. If any parameter is outside the specified range, consult the manufacturer before use.
Working Principle
The frame acts as a stationary or semi-stationary structural foundation that absorbs and distributes the reaction forces generated during the bending operation. It maintains geometric stability while other components (like the bending arm, dies, and actuators) perform the actual metal forming work. The frame's rigidity and precise mounting points ensure that the bending forces are transmitted correctly, preventing misalignment and ensuring consistent bending quality. The frame also provides a reference for the positioning of other components, contributing to the overall accuracy of the assembly.
Common Materials
Structural steel, Cast iron
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Load Capacity500–2000 kgMaximum load the frame can support without permanent deformation
Bending Arm Length300–1200 mmDetermines reach and bending capacity
Frame Width150–500 mmAffects mounting compatibility
Frame Height200–600 mmAffects mounting compatibility
Material GradeQ235–Q345Higher grade for higher strength requirementsGB/T 700
Surface Treatment20–40 μmHot-dip galvanizing thickness for corrosion resistanceISO 1461
Mounting Hole Diameter10–20 mmMust match mating components
Mounting Hole Tolerance±0.1 mmEnsures proper fitISO 2768-m
Flatness Tolerance0.5–1.0 mmCritical for even load distributionISO 2768-m
Weight50–300 kgAffects handling and installation
Operating Temperature-20–80 °CBeyond this range material properties may degrade
Surface Hardness150–250 HBResistance to wear and indentationISO 6506-1

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
  • Base Plate Part
    Primary load-bearing surface that distributes forces to the foundation
    Material: Structural steel
  • Vertical Supports Part
    Provide height and vertical stability to the bending mechanism
    Material: Structural steel
  • Cross Braces Part
    Add torsional rigidity and prevent frame deformation under load
    Material: Structural steel
  • Mounting Brackets Part
    Provide attachment points for hydraulic cylinders, guides, and other components
    Material: Steel plate

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 MPa (static load)
other spec: Max dynamic load: 5 kN, Vibration tolerance: 5-200 Hz at 0.5g max
temperature: -40°C to 150°C
Media Compatibility
✓ Hydraulic fluid systems ✓ Industrial lubricants ✓ Dry inert gas environments
Unsuitable: High-concentration abrasive slurry (>15% solids by weight)
Sizing Data Required
  • Maximum bending moment (Nm)
  • Required mounting interface dimensions (mm)
  • Environmental exposure class (e.g., ISO 12944 C4)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic loading from repeated bending operations leading to stress concentration at weld joints or geometric transitions
Bearing seizure
Cause: Inadequate lubrication or contamination ingress causing excessive friction and heat buildup in pivot points
Maintenance Indicators
  • Visible cracks or deformation at weld joints or high-stress areas
  • Unusual grinding or squealing noises during operation indicating bearing wear or misalignment
Engineering Tips
  • Implement regular non-destructive testing (ultrasonic or magnetic particle) to detect early-stage fatigue cracks before propagation
  • Establish a precision lubrication program with contamination control and proper regreasing intervals for all pivot bearings

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 2768-1: General tolerances for linear and angular dimensions ANSI B4.1: Preferred Limits and Fits for Cylindrical Parts DIN 6930: Cold bending of steel sections - Tolerances

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.02mm
  • Frame flatness: 0.1mm per meter
Quality Inspection
  • Dye Penetrant Test for surface cracks
  • Coordinate Measuring Machine (CMM) verification of critical dimensions

Manufacturers of Bending Arm Frame

Manufacturer profiles associated with Bending Arm Frame.

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Frequently Asked Questions

What is the primary function of a Bending Arm Frame?

The primary function is to provide a rigid structural foundation that supports and aligns all other components of a bending arm assembly, ensuring accurate and stable bending operations.

What materials are commonly used for Bending Arm Frames?

Common materials include structural steel and cast iron, as listed in the product data. The specific material grade should be confirmed with the manufacturer for the intended application.

What are the typical load capacity ranges for Bending Arm Frames?

The rated load capacity typically ranges from 500 to 2000 kg, but this is a reference range. Always verify the exact capacity for the specific model with the manufacturer.

How should I verify the specifications of a Bending Arm Frame?

Check the product datasheet for parameters such as dimensions, tolerances, material grade, and surface treatment. Confirm that these values meet your application requirements and consult the manufacturer for any clarifications.

Data Basis

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

Preliminary Technical Classification
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