The Bradbury Group — Factory Acceptance Testing (FAT) Explained

For high-value roll forming and coil processing systems, Factory Acceptance Testing (FAT) is one of the most critical risk-reduction stages in the entire procurement process.

FAT is the buyer’s opportunity to verify that the machine:

• Meets agreed specifications

• Functions correctly

• Produces acceptable parts

• Aligns with automation expectations

• Complies with safety requirements

Before it ships.

This page explains what FAT is, what should be tested, common buyer mistakes, and how to structure a proper acceptance process.

What Is Factory Acceptance Testing (FAT)?

Factory Acceptance Testing is a structured evaluation performed at the manufacturer’s facility before the equipment is shipped to the buyer.

It is designed to:

• ✔ Verify mechanical functionality
• ✔ Test automation logic
• ✔ Confirm safety systems
• ✔ Validate tooling performance
• ✔ Demonstrate production output

FAT acts as the final checkpoint before the machine leaves the factory.

Why FAT Is Critical for Roll Forming Equipment

Roll forming systems — especially structural or integrated lines — are:

• Engineered to order

• Custom-built

• Complex

• Expensive to modify after shipment

Once the machine is installed overseas, adjustments become far more costly.

FAT allows issues to be identified and corrected before shipment.

What Should Be Tested During FAT?

A proper FAT should include structured testing across multiple areas:

Mechanical Operation

Verify:

• Roll stands alignment

• Shaft rotation smoothness

• Gearbox noise levels

• Drive system stability

• Hydraulic performance

• Material tracking systems

Mechanical vibration, misalignment, or noise should be documented.

Automation & PLC Logic

Test:

• Start/stop logic

• Emergency stop functionality

• Safety interlocks

• Recipe storage

• Speed control

• Punch synchronization

• Cut length accuracy

Ensure alarm systems are functioning properly.

Tooling & Profile Output

Run sample material to:

• Verify profile geometry

• Check dimensional tolerances

• Confirm hole alignment

• Assess surface quality

• Evaluate spring-back behavior

Dimensional checks should be measured and recorded.

Punching & Cutting

Validate:

• Punch position accuracy

• Punch-to-feed synchronization

• Shear cut precision

• Burr levels

• Blade alignment

Punch timing errors should be corrected at factory level.

Safety Systems

Confirm:

• Emergency stops trigger correctly

• Guarding is secure

• Safety gates lock out movement

• Reset logic functions properly

Safety compliance must align with regional standards.

Electrical & Power Verification

Check:

• Voltage compatibility

• Motor current draw

• Panel wiring integrity

• Cable management

• Labeling and documentation

Electrical documentation should match physical installation.

FAT Documentation Should Include

• ✔ Signed FAT checklist
• ✔ Profile measurement reports
• ✔ Video documentation (if remote)
• ✔ Automation testing logs
• ✔ Alarm & fault testing confirmation
• ✔ Tooling verification results

Documentation protects the buyer in future disputes.

Remote FAT vs On-Site FAT

International buyers often conduct FAT in two ways:

On-Site FAT

Buyer or representative attends factory.
Most reliable method.

Remote FAT

Live video walkthrough and testing demonstration.
Useful but less comprehensive.

Whenever possible, physical presence provides stronger validation.

Common FAT Mistakes Buyers Make

• ❌ Skipping FAT entirely
• ❌ Not bringing material samples
• ❌ Not checking tolerances precisely
• ❌ Not testing multiple production speeds
• ❌ Ignoring minor punch alignment issues
• ❌ Not verifying automation alarms
• ❌ Rushing the process

Small issues left unresolved can become major post-installation problems.

When Should FAT Happen?

FAT should occur:

• After full assembly

• After control programming

• After internal manufacturer testing

• Before disassembly for shipping

It is typically scheduled 1–2 weeks before shipment.

FAT and Warranty Relationship

Important:

• Once FAT is signed off, the machine is typically considered accepted.

• Issues identified and accepted during FAT may not qualify as warranty defects later.

Buyers should ensure all deviations are documented and corrective commitments are agreed in writing.

Example FAT Checklist Structure

Category	Tested	Approved
Mechanical Alignment	✔	✔
PLC Functionality	✔	✔
Punch Timing	✔	✔
Profile Dimensions	✔	✔
Safety Interlocks	✔	✔
Electrical Compliance	✔	✔

A formal checklist reduces ambiguity.

How Machine Matcher Supports FAT

Machine Matcher assists buyers by:

• ✔ Preparing structured FAT checklists
• ✔ Reviewing profile tolerances
• ✔ Attending FAT on buyer’s behalf
• ✔ Identifying hidden technical risks
• ✔ Verifying automation logic
• ✔ Documenting deviations
• ✔ Negotiating corrective actions before shipment

Independent representation during FAT significantly reduces risk.

Buyer Preparation Checklist

Before FAT:

• ☑ Send actual production material
• ☑ Bring detailed profile drawings
• ☑ Define dimensional tolerances
• ☑ Confirm speed expectations
• ☑ Review safety standards
• ☑ Prepare punch location tolerance limits
• ☑ Allocate enough time for thorough testing

Conclusion

Factory Acceptance Testing is one of the most important stages in purchasing engineered roll forming equipment. It ensures the machine performs as specified before it leaves the factory — reducing costly surprises later.

For complex systems from manufacturers like The Bradbury Group, structured FAT procedures are essential.

Machine Matcher provides independent FAT support, helping buyers validate performance, document results, and protect their capital investment before shipment.