Gauge Finger: Width 10-25mm, Length 50-300mm, Height 15-40mm

Component Specifications

Definition

The gauge finger is a critical component of back gauge systems used in press brakes and sheet metal bending equipment. It serves as a physical stop or reference point that positions metal sheets accurately before bending operations. Typically mounted on a movable carriage, it ensures consistent bend lines by providing repeatable positioning through mechanical or electronic control systems.

Working Principle

The gauge finger operates by establishing a fixed reference plane against which sheet metal is positioned. When the back gauge carriage moves to a programmed position, the gauge finger creates a precise stopping point. The sheet metal is pushed against this finger, ensuring accurate alignment before the bending ram descends. Modern systems may incorporate sensors to verify contact and positioning accuracy.

Materials

Typically made from hardened tool steel (AISI D2, A2, or similar grades) or carbide-tipped for wear resistance. Some applications use aluminum alloys with hardened inserts for lightweight applications.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	10-25mm
Height	15-40mm
Length	50-300mm
Hardness	58-62 HRC
Mounting Type	T-slot or bolt-on
Surface Finish	Ra 0.4-0.8 μm

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

Back Gauge

A positioning device on a hydraulic press brake that controls the bending position of sheet metal.

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Back Gauge System

A positioning system that controls the distance from the bending line to the material edge in metal bending presses.

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Engineering Analysis

Risks & Mitigation

Wear and dimensional inaccuracy
Improper installation causing misalignment
Material fatigue from repeated impact
Contamination affecting positioning accuracy

FMEA Triads

Trigger: Abrasive wear from sheet metal contact
Failure: Dimensional inaccuracy exceeding tolerance limits
Mitigation: Regular inspection and replacement schedules, use of wear-resistant materials, proper lubrication of contact surfaces

Trigger: Improper mounting torque
Failure: Component loosening during operation
Mitigation: Use calibrated torque wrenches during installation, implement regular maintenance checks, use thread-locking compounds

Trigger: Metal fatigue from cyclic loading
Failure: Component fracture under operational stress
Mitigation: Regular non-destructive testing, proper material selection, stress analysis during design phase

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05mm positioning accuracy

Test Method

Coordinate measuring machine (CMM) verification, laser alignment systems, go/no-go gauge testing

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

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Manufacturers of Gauge Finger

Manufacturer profiles associated with Gauge Finger.

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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

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Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Frequently Asked Questions

What is the primary function of a gauge finger?

The gauge finger provides precise positioning reference points for sheet metal in bending operations, ensuring accurate bend lines and consistent part dimensions.

How often should gauge fingers be inspected for wear?

Inspect gauge fingers every 500 operating hours or monthly in high-production environments. Replace when wear exceeds 0.1mm from original dimensions.

Can gauge fingers be customized for specific applications?

Yes, gauge fingers can be custom manufactured with specific lengths, materials, and mounting configurations to match unique machine requirements or specialized bending applications.

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.

Gauge Finger