CAT Hydraulic Quick Coupler for Skid Steer & Excavator
Features
✅ Safe Pressure Relief Design: A user-friendly residual pressure relief system allows for easy connection/disconnection even with residual pressure, making operation effortless and safe.
✅ Anti-Misoperation Structure: Pull-out activation design prevents accidental system pressure relief, ensuring operational safety.
✅ ISO Standard Flat Structure: Strictly adheres to ISO 16028 standards; the flat end face is easy to clean, reducing hydraulic circuit contamination.
✅ Low Leakage and Environmentally Friendly: Extremely low fluid loss during insertion and removal, reducing hydraulic oil waste and meeting environmentally friendly operation requirements.
✅ Slim and Compact Design: Low-profile structure reduces lateral loads, adapting to confined installation spaces and offering greater compatibility.
✅ Multiple Sizes Available: Standard flow 1/2 inch (No. 12), high flow 3/4 inch (No. 19), standard drain port 3/8 inch (No. 10).
✅ Durable and Robust: Carbon steel body + pulse pressure resistant design, suitable for high-intensity operating conditions, long service life.
✅ Easy Maintenance and Low Cost: Transparent structure allows for easy inspection and replacement of internal components, low replacement costs, and reduced long-term maintenance expenses.
Specifications
Standard |
ISO 16028 |
Materials |
zn/zn-ni plated carbon steel body |
Seals |
standard in nitrile NBR. On request FKM&EPDM seals |
Back-up ring |
PTFE |
Working temp |
with standard seals -25°+125° |

HL |
ISO |
L1 |
L2 |
L3 |
D |
S1 |
S2 |
T |
COD(F) |
COD(M) |
04 |
10 |
195.7 |
108 |
105 |
38 |
50 |
50 |
M48*1.5 |
CAT-04F-M4815 |
CAT-04M-M4815 |
Technical Data

Accessories | ||||
HL |
ISO |
Female Dust Plug |
Male Dust Cap |
Material |
08 |
25 |
CAT-08-PDC |
CAT-08-PDP |
Plastic |
Advantages
✅ Safety First: Pre-release of residual pressure + anti-misinsertion design, completely eliminating the risk of high-voltage insertion and unplugging, reducing operational injuries
✅ Efficient Compatibility: ISO standard universal interface, quick connection / disconnection, significantly reducing the time for equipment and accessories switching
✅ Durability and Convenience: Carbon steel anti-corrosion coating + high-pressure sealing, suitable for harsh working conditions, reducing fault downtime
✅ Economical and Environmentally Friendly: Low leakage design reduces hydraulic oil loss, easy maintenance structure lowers replacement costs, with excellent cost performance
Application
Designed specifically for the rapid replacement of engineering equipment accessories, the equipment it is compatible with includes:
✅Sliding loader
✅ Track-type loader Excavator
✅ Small loader
✅ Multi-functional engineering vehicle
✅ Various scenarios for quick replacement of hydraulic pipelines in construction machinery
Why Choose Our Hydraulic Quick Couplings?
CAT hydraulic quick couplings provide your engineering projects with both safety and efficiency as dual guarantees. The intelligent pressure relief system eliminates the risk of residual pressure. The ISO standard flat design enables rapid, clean, nearly zero leakage operation, significantly enhancing the efficiency of equipment switching. The sturdy and durable material combined with flexible and compatible dimensions make it suitable for various harsh operating environments, effectively reducing long-term operating costs. It is the ideal choice for users who pursue reliability and productivity.
OEM & Customization
HonglunTO KNOW MORE, PLEASE CONTACT US!
Our experts will solve them in no time.





