Bench Top Wrap Tester

Quality Testing For Wire Springs and Coated Metallic Wire
A benchtop testing machine designed to assess spring wire deformation and verify coating adhesion, ensuring the insulation of protected wires remains uncompromised

Product Overview

The Bench Top Wrap Tester from Sjogren Industries is expertly crafted to evaluate the ductility of spring wire and assess the adhesion of coatings on metallic wire. This precision instrument adheres to the stringent testing standards set by the American Wire Producers Association for steel products and is built to US Safety and Electrical Standards.

The Sjogren Wrap Testing Machine features an adjustable, rotating chuck and a sliding mandrel support carriage, providing operators with precise control over the wraps on the mandrel. The test consists of coiling the wire in a closely spaced helix to enable visual inspection for cracks or fractures.

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Key Benefits

Discover the key features of the Sjogren Wrap Tester using our interactive model, or scroll down to explore more about the ultimate spring and coated wire testing machine in the industry, from Sjogren Industries!

1 Wide Wire Range

Spring Wire Diameter Range:

  • .050" to .375"
  • 1,27 mm to 9,5 mm

Machine Dimensions:

  • Width: 28″ (71cm)

  • Length: 52″ (132cm)

  • Height: 22″ (56cm)

  • Weight: 400 lbs. (182 kg)

2 Mandrel Capacity

Mandrels and mandrel support bushings are not supplied as part of the standard machine but can be supplied optionally upon request. Mandrel diameters are dependent upon the exact wire diameter being tested and what specification is required for wrapping around a mandrel of 1x to 4x the diameter of the wire.

The Wrap Tester is engineered for optimal performance, accommodating mandrel diameters from .050" to 1.5" or 1.27 mm to 38 mm.

Ensure to note your requirement for mandrels spacers and bushings, and the sizes required on your form, or when speaking with a member of the Sjogren Team.

3 Drive Unit

Two standard drive units offer 50Hz and 60Hz with .5hp constant speed motors.

There is also a 124:1 gear reducer that drives the rotating chuck at an approximate speed of 13.9 RPM.

A limit switch positioned to the rear of the sliding carriage de-energizes the motor after the carriage has passed, ending the wrap cycle. A limit switch mounted above the chuck prevents machine operation if the guard is not closed.

4 Interlocked Guard

An interlocked guard keeps any flying metal from ejecting outside of the front of the machine during testing, ensuring operator safety.

Note there is a viewing window on the cover that is not shown in the interactive model.

5 Dual Operational Modes

With easy operation and optimal interchangeable mandrel set up, there are also two operational modes to ensure you get the most out of your wrap testing for absolute quality of your product.

Mode 1 utilizes the wire guide bushing in the tooling block and the wire much me drawn completely through the bushing.

Mode 2* eliminates the use of the wire guide bushing and utilizes the slotted opening of the guide bar on the tooling block to support the wire during wrapping.

*The wrapping cycle must be manually stopped before the wire sample is pulled completely through the guide bar, and then Forward/Reverse switch is used to safely remove the built up spring pressure in the wire so it can be removed from the machine.

6 Sliding Carriage

Wire guide assembly is mounted to a sliding carriage to support mandrel and control sample wrap spacing

Why Choose Sjogren's Wrap Tester?

The WT from Sjogren is designed to meet American Wire Producers Association steel products testing specifications for ultimate quality assurance.

1. Sliding Carriage

Wire guide assembly is mounted to a sliding carriage to support mandrel and control sample wrap spacing

2. Designed For Bench Setting

Install on your own bench that can hold 400lbs. (182kg) or have Sjogren's standard swivel caster rolling cart for mobility

3. Safety

Interlocked guards allow for safe visual inspection throughout testing, ensuring operator safety

4. Customized For You

Test your wire to your specs with a wide opening for a variety of mandrel, spacer and bushing kits

Industries and Applications

The Sjogren Bench Top Wrap Tester is trusted in many industries that require optimal quality assurance including:

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Industrial & Construction Manufacturing
Testing spring coils and insulated wire for industrial and construction use
Wire Processing & Wire Production
Quality is essential for processers of coated and uncoated metals and high-tensile springs
Aerospace
Critical component testing for any spring or coated wire in aerospace equipment
Medical Wire Production
Trust your vital coated wire and springs for medical equipment are strong and safe for probes, valves, tubing assemblies, and more
Automotive
Ensure any coated wire or heavy-duty spring are not compromised with a wrap test
Energy and Power
Ensure coated wiring or electrical spring can withstand tests before entering the field
Medical Wire Production
Trust your vital coated wire and springs for medical equipment are strong and safe for probes, valves, tubing assemblies, and more
Wire Processing & Wire Production
Quality is essential for processers of coated and uncoated metals and high-tensile springs
Aerospace
Critical component testing for any spring or coated wire in aerospace equipment
Medical Wire Production
Trust your vital coated wire and springs for medical equipment are strong and safe for probes, valves, tubing assemblies, and more
Automotive
Ensure any coated wire or heavy-duty spring are not compromised with a wrap test
Energy and Power
Ensure coated wiring or electrical spring can withstand tests before entering the field

Optional Standard Tooling Block Arrangements

We offer 3 tooling block arrangements covering three wire ranges. Customizations are always an option at Sjogren. Sample kits are also available that include mandrel, spacer, and bushings. The size requirements must be determined by you.

Connect With A Specialist

Work with our team of wire tooling experts to determine the ideal part for you, or let us know which you need! Our team is here to support your production in any way we can.

Tell Us Your Specs - Get Your Solution!

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Wrap Tester FAQ

Learn more from frequently asked questions and addressed common concerns about Sjogren's WT from others like you.

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