Editorial Technical Reference

Blade Holder/Bracket

This page explains how Blade Holder/Bracket 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

A structural component that securely mounts and positions the blade within a scraper or plow assembly.

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Blade Holder/Bracket in a manufacturing environment
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Product Specifications

Technical details and manufacturing context for Blade Holder/Bracket

Definition
The blade holder or bracket is a critical mounting component within a scraper or plow assembly. It provides rigid support and precise positioning for the cutting or scraping blade, ensuring proper alignment and maintaining the blade's operational geometry during use. This component transfers operational forces from the blade to the main assembly structure, distributing cutting and scraping loads effectively. It also facilitates blade replacement or adjustment, allowing for efficient maintenance and reduced downtime.

Typical materials for this component include carbon steel and alloy steel, with a common material grade being QT450-10 ductile iron, which offers strength and wear resistance. Surface treatment often includes zinc plating with a thickness of 8–12 μm for corrosion protection, suitable for outdoor use. The mounting hole diameter ranges from 10.5 to 13.5 mm to fit standard blade bolts. The blade width compatibility is 100–200 mm, and the center distance between mounting holes ranges from 80 to 160 mm, determining the bolt pattern spacing.

The load capacity of the bracket is typically 5–15 kN, and it operates effectively in temperatures from -40°C to 85°C. Tensile strength ranges from 450 to 600 MPa, and hardness is 160–210 HB, balancing wear resistance and machinability. The weight is 1.5–3.5 kg, affecting handling and installation. Surface roughness is Ra 3.2–6.3 μm to ensure proper seating of the blade, and dimensional tolerance is ±0.5 mm to ensure interchangeability.

These specifications are reference ranges and must be verified for the specific model and application. Standards such as GB/T 1348, ASTM B633, ISO 1302, and ISO 2768-m are listed as procurement references. Always confirm model-specific values and standards with the legal manufacturer or supplier before purchase.
Working Principle
The holder/bracket mechanically clamps or fastens the blade in place using bolts, clamps, or other locking mechanisms. It acts as an interface between the blade and the main assembly frame, distributing cutting/scraping forces and maintaining the blade's operational geometry during use. The bracket ensures that the blade remains securely positioned under load, preventing movement that could affect performance or safety. It also allows for adjustment or replacement of the blade when necessary, simplifying maintenance procedures.
Common Materials
Carbon Steel, Alloy Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Material GradeQT450-10Ductile iron for strength and wear resistanceGB/T 1348
Surface TreatmentZinc-plated 8–12 μmCorrosion protection for outdoor useASTM B633
Mounting Hole Diameter10.5–13.5 mmFits standard blade bolts
Blade Width Compatibility100–200 mmMatches common scraper blade widths
Center Distance80–160 mmDetermines bolt pattern spacing
Load Capacity5–15 kNMaximum force the bracket can withstand
Operating Temperature-40–85 °CSuitable for extreme environments
Tensile Strength450–600 MPaEnsures structural integrityGB/T 1348
Hardness160–210 HBBalances wear resistance and machinabilityGB/T 231.1
Weight1.5–3.5 kgAffects handling and installation
Surface RoughnessRa 3.2–6.3 μmEnsures proper seating of bladeISO 1302
Dimensional Tolerance±0.5 mmEnsures interchangeabilityISO 2768-m

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
  • Mounting Plate Part
    Primary structural plate that interfaces with the assembly frame
    Material: steel
  • Clamping Mechanism
    Bolts, wedges, or levers that secure the blade in position
    Material: steel
  • Alignment Features Part
    Pins, slots, or guides that ensure proper blade positioning
    Material: steel

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 MPa (static), 2 MPa (dynamic)
other spec: Slurry concentration up to 60% solids by weight, max abrasion index 0.8
temperature: -40°C to 150°C
Media Compatibility
✓ Coal slurry ✓ Mineral tailings ✓ Industrial wastewater
Unsuitable: Hydrochloric acid environments (pH < 2)
Sizing Data Required
  • Blade width (mm)
  • Required clamping force (kN)
  • Scraper/plow assembly mounting pattern

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic loading from blade vibration and centrifugal forces leading to stress concentration at geometric discontinuities or weld joints
Corrosion-induced weakening
Cause: Exposure to moisture, chemicals, or salt-laden environments causing pitting, galvanic corrosion, or stress corrosion cracking
Maintenance Indicators
  • Visible cracks or deformation at mounting points or stress concentration areas
  • Abnormal vibration patterns or audible rattling during operation indicating loosening or structural compromise
Engineering Tips
  • Implement regular non-destructive testing (NDT) such as dye penetrant or ultrasonic inspection to detect early-stage cracks
  • Apply protective coatings and ensure proper material selection (e.g., corrosion-resistant alloys) with controlled environmental exposure

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
ANSI B11.19 - Performance Requirements for Safeguarding DIN EN 1090-2 - Execution of steel structures and aluminium structures

Quoted from the published standard.

Manufacturing Precision
  • Bore Diameter: +/-0.025mm
  • Mounting Surface Flatness: 0.08mm
Quality Inspection
  • Dimensional Verification with CMM
  • Magnetic Particle Inspection for Surface Cracks
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Inspection readiness
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Manufacturers of Blade Holder/Bracket

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Frequently Asked Questions

What materials are commonly used for blade holders/brackets?

Common materials include carbon steel and alloy steel. A typical material grade is QT450-10 ductile iron, which provides strength and wear resistance. Surface treatment often includes zinc plating (8–12 μm) for corrosion protection.

What are the typical mounting hole diameters and center distances?

Mounting hole diameters typically range from 10.5 to 13.5 mm to fit standard blade bolts. Center distances between mounting holes range from 80 to 160 mm, determining the bolt pattern spacing. These values should be verified for the specific model.

What is the load capacity and operating temperature range?

The load capacity is typically 5–15 kN, and the operating temperature range is -40°C to 85°C. These are reference ranges; confirm the exact values for your application with the manufacturer.

Which standards apply to this component?

Relevant standards include GB/T 1348 for material grade and tensile strength, ASTM B633 for zinc plating, ISO 1302 for surface roughness, and ISO 2768-m for dimensional tolerance. These are procurement references and do not guarantee compliance.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

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

Scraper/Plow Assembly
View system integration details

Industrial Ecosystem & Supply Chain Structure

Data Basis

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

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 12 October 2026

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