Description
Utilux UT#21 Crimper
The Utilux UT#21 crimper, also commonly referenced as the Utilux #21, is a hand-operated mechanical lever tool designed for crimping uninsulated copper lugs and links from 6–50mm².
Unlike crimping tools that require separate removable dies, the UT#21 features a built-in selectable crimp die set. The operator selects the appropriate crimp size on the tool for the connector and conductor being terminated.
The tool produces a hexagonal crimp, making it suitable for compatible Utilux copper compression lugs and links within its specified size range. Engineering Supplies lists the UT#21 as a 6–50mm², 410mm long hexagonal crimper.
Utilux #21 Crimping Tool Features
- Hand-operated mechanical lever crimper
- Designed for copper lugs and links
- 6–50mm² crimping range
- Hexagonal crimp profile
- Built-in selectable die set
- No separate loose die set required for its specified range
- 410mm overall length
- Approx. 1.4kg weight
- Manual operation
- No battery or hydraulic equipment required
- Suitable for workshop and field use
- Commonly referenced as UT#21 / #21
Utilux distributor data likewise specifies a 6–50mm² range, hexagonal crimp, 410mm length and 1.4kg tool weight.
Built-In Selectable Hex Crimp Dies
A key advantage of the UT#21 is its integrated selectable die system.
Rather than installing and removing individual die sets, the operator selects the appropriate crimp position for the required lug or link size. This makes the tool particularly convenient for electricians and maintenance personnel working across several conductor sizes.
Always confirm the connector, conductor and selected crimp size before completing the termination.
Copper Lugs & Links from 6–50mm²
The UT#21 is intended for compatible uninsulated copper compression connectors.
Engineering Supplies carries a broad range of Utilux copper lugs and links, including standard copper crimp lugs, butt links, reducing links, flared lugs and solid-barrier links.
This makes the #21 a useful manual crimping option for common copper conductor sizes used in:
- Switchboards
- Control panels
- Industrial machinery
- Electrical distribution
- Mining equipment
- Utilities
- Infrastructure
- Electrical maintenance
- Automotive and mobile equipment
- OEM manufacturing
Utilux UT#21 Specifications
| Specification | UT#21 |
|---|---|
| Tool Type | Mechanical lever crimper |
| Connector Type | Copper lugs and links |
| Crimping Range | 6–50mm² |
| Crimp Profile | Hexagonal |
| Die System | Built-in selectable |
| Length | 410mm |
| Weight | Approx. 1.4kg |
| Operation | Manual |
| Reference | UT#21 / #21 |
UT#21 vs UT#22
The UT#21 and UT#22 use a similar hand-operated mechanical lever design but cover different conductor ranges.
The UT#21 covers 6–50mm², while the UT#22 extends the range to 6–120mm². Both use built-in selectable dies and produce a hexagonal crimp.
For larger copper lugs and links, the Utilux UT#22 may therefore be the more appropriate manual tool.
For still larger or higher-volume crimping applications, the Utilux UT#38C/1 hydraulic crimper accepts interchangeable Utilux 38 Series dies.
Choosing the Correct Utilux Crimping Tool
Different Utilux tools suit different connector types and conductor ranges.
The UT#21 crimper is specifically intended for compatible copper lugs and links within its 6–50mm² range.
For smaller uninsulated copper connectors, the UT#103 provides a compact indent-crimping option up to 16mm², while the UT#102 is designed for red, blue and yellow pre-insulated and SuperGrip terminals.
Selecting the correct tool and crimp profile is important because conductor size alone does not determine tool compatibility.
Utilux Application Tooling
Utilux is a TE Connectivity brand with a range of electrical compression connectors and associated application tooling.
For information on the wider Utilux connector and tooling range, visit the TE Connectivity Utilux product range.
TE’s current Utilux product information confirms its copper compression connector ranges use hexagonal crimping, consistent with the crimp profile used by the UT#21.
Buy Utilux UT#21 Crimpers in Australia
Engineering Supplies stocks the Utilux UT#21 crimper for electrical contractors, switchboard builders, mining companies, utilities, OEMs and industrial maintenance teams throughout Australia.
The built-in selectable die system makes the #21 a particularly convenient manual tool for customers regularly terminating copper lugs and links between 6 and 50mm².
For pricing, stock availability or assistance matching a Utilux lug or link with the correct crimping tool, contact Engineering Supplies on (08) 9258 8444 or email sales@engsup.com.au.
