Backgauge Fingers: Load Capacity 50-500 kg, Width 20-80 mm

Component Specifications

Definition

Backgauge fingers are mechanical components mounted on the backgauge system of press brakes and sheet metal bending machines. They serve as adjustable stops that contact the sheet metal workpiece to establish precise positioning relative to the bending tool. These fingers move along the backgauge beam to accommodate different material sizes and bending positions, ensuring repeatable accuracy in metal forming operations. They typically feature hardened contact surfaces and may include measurement scales or digital readouts for positioning verification.

Working Principle

Backgauge fingers operate by moving along the backgauge beam to predetermined positions based on programmed bending parameters. When the sheet metal is loaded, it contacts the fingers' surfaces, establishing a fixed reference point. During bending operations, the fingers maintain consistent positioning through mechanical locking mechanisms or servo-controlled systems, ensuring the material remains properly aligned with the bending tool throughout the forming process.

Materials

Typically manufactured from hardened tool steel (A2, D2, or similar grades) or carbide-tipped for wear resistance. Some applications use aluminum alloy bodies with steel inserts. Surface treatments may include nitriding, chrome plating, or titanium nitride coating for enhanced durability.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	20-80 mm
Thickness	10-40 mm
Height Range	50-200 mm
Load Capacity	50-500 kg
Mounting Type	T-slot, dovetail, or bolt-on
Surface Hardness	58-62 HRC
Positioning Accuracy	±0.01-0.05 mm

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

Standards

ISO 9001, DIN 8586

Parent Products

This component is used in the following industrial products

Backgauge System

A positioning system on a CNC press brake that controls the distance between the bending line and the material edge.

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Engineering Analysis

Risks & Mitigation

Wear and tear reducing positioning accuracy
Improper installation causing misalignment
Material buildup on contact surfaces affecting precision
Mechanical failure during high-cycle operations

FMEA Triads

Trigger: Abrasive wear from repeated material contact
Failure: Reduced positioning accuracy leading to bent part rejection
Mitigation: Implement regular inspection schedules, use hardened or coated surfaces, and establish preventive replacement intervals

Trigger: Loose mounting hardware
Failure: Finger movement during operation causing inconsistent bends
Mitigation: Use proper torque specifications during installation, implement regular fastener checks, and consider thread-locking compounds

Trigger: Contamination on contact surfaces
Failure: Inaccurate material positioning and surface damage
Mitigation: Establish cleaning protocols, use protective covers when not in operation, and implement material handling procedures to minimize debris

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Positioning tolerance typically ±0.02 mm, surface flatness within 0.01 mm per 100 mm

Test Method

Coordinate measuring machine (CMM) verification, laser alignment systems, precision gauge block comparison

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Backgauge Fingers

Manufacturer profiles associated with Backgauge Fingers.

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Frequently Asked Questions

What is the purpose of backgauge fingers in metal bending?

Backgauge fingers provide precise material positioning against the backgauge system, ensuring accurate and repeatable bends in sheet metal fabrication.

How do I maintain backgauge fingers for optimal performance?

Regularly clean contact surfaces, check for wear or damage, lubricate moving parts according to manufacturer specifications, and verify positioning accuracy with calibration tools.

Can backgauge fingers be customized for specific applications?

Yes, manufacturers often offer custom finger designs with specialized shapes, materials, or mounting configurations to accommodate unique workpiece geometries or production requirements.

Data Basis

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

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.

Backgauge Fingers