Start with the connector manufacturer's table
If your work is dominated by a known lug/splice family, let its published tooling and die index drive the tool decision.
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Hydraulic electrical crimping
Hydraulic Crimping Tool Guide
Hydraulic crimpers range from self-contained hand tools to remote 10,000-psi heads and battery-powered 6T/12T systems. Choose by the connector and head/die architecture before comparing power source or price.
Crimping evidence chain
Tool → head/jaw → die family → conductor → connector → die/index → documented approval or classification. Physical fit alone is not enough.
Last technical review: August 26, 2026.
Hydraulic describes the force system—not the compatibility system
A hydraulic crimping tool can be manual, remote-pump or battery-powered. What determines whether it can make a particular electrical connection is the combination of output force, head opening, die architecture, connector/conductor range and the published installation system.
Three common hydraulic workflows
| Type | Example | What it changes | What it does not change |
|---|---|---|---|
| Self-contained hand hydraulic | Burndy Y750HSXT | No battery or remote pump; 12T C-head and U dies in one tool. | Still requires the correct U die and connector/conductor combination. |
| Remote hydraulic head | Burndy Y750BHXT; Greenlee RK12CX | Head connects to an external hydraulic source; useful for positioning and multi-purpose systems. | 10,000 psi system compatibility, adapters and dies remain model-specific. |
| Battery hydraulic | Milwaukee 2678/2778, Greenlee EK-series, Burndy PAT750 | Motor drives the hydraulic pump; cycle verification and data logging may be integrated. | Battery platform does not determine die/connector approval. |
Head architecture matters as much as force
Burndy's Y750HSXT and Y750BHXT are 12-ton C-head tools using U dies. Greenlee's RK12CX is a 24,000-lb remote multi-purpose head and requires the UA12T adapter when the job calls for 12-ton U dies. Milwaukee's 2678-20 is a 6-ton platform built around interchangeable jaws, while the 2778-20 is a 12-ton U-die crimper.
Those systems overlap in some die forms, but they are not interchangeable simply because all are hydraulic.
How to choose a hydraulic crimper without overbuying
Head opening and rotation can be decisive
Large C-head openings and rotating heads help around installed conductors; remote heads can separate head weight from the pump.
Battery tools trade setup for speed
Automatic retraction, pressure verification and crimp logging can matter on repetitive work, but they do not replace connection-system verification.
Compare hydraulic electrical crimping tools
Compare current listings only after you know whether your work calls for a 6T jaw system, a 12T U-die C-head, a remote hydraulic head or a documented dieless system.
10,000 psi remote systems need exact head/pump matching
Burndy lists the Y750BHXT as a 12-ton remote C-head operating at 10,000 psi and using U dies. Greenlee lists RK12CX as a 10K-psi remote multi-purpose tool with adapters. Do not connect a head to an arbitrary pump based only on a pressure number; use the coupler, hose, pump and head combination specified by the manufacturer.
Dieless hydraulic crimping is its own path
Dieless 12-ton tools can remove the die-set inventory burden, but the tool still has a published connector/conductor range. Greenlee's EK12ID family, for example, is published for color-coded lugs and splices across specific copper/aluminum ranges. Treat that as a tool-specific system, not as permission to crimp every connector that physically fits the head.
Battery-powered crimper selection
For a cross-brand comparison of 6T, 12T, dieless and interchangeable-jaw cordless systems, see the Battery Crimping Tool guide.
Technical sources used for this guide
- Burndy Y750HSXT 12-Ton Self-Contained Hydraulic Crimper — 12-ton U-die C-head, published copper/aluminum/ACSR ranges.
- Burndy Y750BHXT 12-Ton Remote C-Head — 10,000 psi remote hydraulic architecture and U-die requirement.
- Greenlee RK12CX 12-Ton Remote Tool — remote 10K-psi multi-purpose head and UA12T U-die adapter path.
- Greenlee EK1240 12-Ton Crimper — battery-hydraulic U-style die head family.
- Burndy PAT750L5 PATRIOT Battery Crimper — current battery-hydraulic 12-ton U-die system and range.
- Milwaukee 2778-20 12T manual — hydraulic battery crimper requirements and approved-combination warning.
Hydraulic Crimping Tool Guide FAQs
What is a hydraulic crimping tool?
A hydraulic crimping tool uses hydraulic force to close a crimping head or die set around a connector. The hydraulic power can be hand-pumped, remote-pump, or battery-driven.
What is the difference between a remote and self-contained hydraulic crimper?
A self-contained tool carries its pump and head in one tool. A remote head connects to an external hydraulic pump, which can reduce head weight and suit specialized access but adds hose/pump setup.
Does 10,000 psi tell me the crimping tonnage?
No. System pressure and output force are related through the hydraulic design. Select the head/pump combination the manufacturer specifies rather than converting pressure into assumed tool capacity.
Can a battery crimper still be hydraulic?
Yes. Many professional cordless crimpers use an electric motor and battery to drive a hydraulic pump. Battery-powered and hydraulic are not opposites.
Should I buy a 6-ton or 12-ton hydraulic crimper?
Start with the connector and die/head system. A 6-ton W-die utility tool and a 12-ton U-die tool serve different approved connector ecosystems.