Single-Function Circuits
Hydraulic power for breaker, hammer, thumb, coupler, and other focused attachment functions.
Machine-Specific Hydraulic Solutions
Caterpillar Excavator Hydraulic Kits
Add attachment-ready hydraulic capability to Caterpillar excavators with machine-specific routing, prepared components, controls integration, and long-term HKX support.
Browse CATERPILLAR Kits
CATERPILLAR Hydraulic Systems
Support for current work and hard-to-source legacy applications.
HKX has built hydraulic systems for Caterpillar excavators since the early 1990s. That history includes support for current applications as well as older machines that can be difficult to provision through standard channels.
Each project starts with the machine and attachment requirements, then brings together the routing, control approach, connection details, mounting hardware, and documentation required for a complete installation.
HKX Application Experience
Decades of Caterpillar application history.
The figures below were published on the previous HKX Caterpillar page and are retained as historical context rather than live shipment totals.
- Early 1990s
- HKX began manufacturing Caterpillar excavator kits
- 3,000+
- Caterpillar kits historically reported sold since 2006
- 150+
- Configurable combinations historically reported
- 8
- Standard kit types behind the historically reported combinations
Attachment Possibilities
Configure the hydraulic functions the work requires.
HKX can help connect Caterpillar excavators with single-function, combination, rotating, priority-flow, and specialized attachment applications.
Multi-Function Systems
Combined circuits for attachments that require multiple controlled hydraulic functions.
Rotation & Priority Flow
Options for rotating tools and demanding applications that require deliberate flow management.
Custom & Conversion
Purpose-built planning for uncommon attachments, legacy machines, and specialized operating requirements.
Machine & Attachment Engineering
Next Gen and GC systems built for field installation.
Featured HKX literature presents Caterpillar Next Gen and GC configurations for thumb, hammer, combination, and rotating-attachment applications.
What HKX plans around
- Flexible flow: Featured configurations support one- or two-pump flow depending on the application.
- Machine integration: Controls can integrate with OEM joysticks and monitor settings on applicable machines.
- Prepared routing: Preformed tubing and low-profile mounting support a clean field installation.
Installation-Ready Systems
A complete path from machine details to working hydraulics.
HKX prepares Caterpillar hydraulic systems to reduce field fabrication, clarify installation, and support the machine after the kit ships.
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01
Confirm the application
Match the Caterpillar machine model, serial information, attachment, and required functions.
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02
Prepare the system
Organize the tubing, hoses, valves, controls, brackets, and supporting hardware as one kit.
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03
Guide the installation
Use machine-specific instructions and labeled components to keep field work clear and repeatable.
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04
Support the machine
Access HKX technical assistance for installation questions and long-term replacement-part identification.
Continue Exploring
Useful HKX resources for the next step.
Compare hydraulic kit types, browse product literature, or learn more about the engineering and support behind HKX systems.
Product Literature
Find flyers, brochures, and application-focused hydraulic product information.
Browse literatureHydraulic Kit Types
Compare common circuit configurations and attachment-focused hydraulic solutions.
Explore kit typesWhy HKX
See how application engineering, installation preparation, and long-term support work together.
Why equipment teams choose HKXFind the Right System
Tell HKX about your machine and attachment.
Share the Caterpillar model, serial number, attachment, and operating requirements. An HKX specialist can help identify a practical next step.