Rugged Multi

• Overview
• Specification
• After Sales Service
• Company Profile
• FAQ

Overview

Basic Info.

Model NO.	YHZ-8-8
Work Temperature	Normal Temperature
Thread Type	Internal Thread
Installation	Sleeve Type
Material	Cast Iron
Type	Right Angle
Packing Way	Carton+Wooden Box
Max Pressure	35MPa
Diameter	12mm
Max Flow	89L/Min
Transport Package	Wooden Box
Specification	89L/Min
Trademark	YiKDE
Origin	China
HS Code	8481201090
Production Capacity	20000 PCS Each Year

Packaging & Delivery

Package Size38.00cm * 21.00cm * 12.00cm Package Gross Weight22.000kg

Product Description

YHZ-8-8 Hydraulic Swivel Joint The YHZ-8-8 is a heavy-duty eight-port central rotary union designed for excavators and equipment that demand both high pressure and high flow. With four primary channels flowing up to 89L/min at 35MPa, it powers travel motors and main work circuits without restriction, while dedicated medium-flow (62L/min) and low-flow (5L/min) passages handle blade tilt, swing functions, and auxiliary controls. A separate 0.3MPa low-pressure return line simplifies hydraulic tank routing and keeps the undercarriage plumbing clean. Built around ISO 6149-1 M24/M18/M20/M14 ports, it drops into standard metric plumbing with zero adapter hassle. At 20.9kg, the reinforced construction absorbs job site shock and vibration, while low starting torque (≤180N·m) preserves engine power. Sealed from -30°C to 100°C and tolerant of contaminated oil (NAS 9), the YHZ-8-8 delivers the graded flow capacity and structural toughness that keeps heavy excavators productive in the most demanding conditions.SpecificationApplications· Mid-Size and Large Compact Excavators – Routes high-flow oil to travel motors and primary circuits while managing secondary functions through dedicated medium and low-flow lines.
· Heavy-Duty Construction Equipment – Suitable for crawler cranes, drill rigs, and large tracked carriers requiring staged hydraulic distribution.
· High-Pressure Turret-to-Undercarriage Routing – Maintains full 35MPa working pressure during continuous 360° rotation under load.
· OEM Custom Hydraulic Systems – Ideal for machines needing a single swivel that integrates high-flow, medium-flow, and low-pressure return in one robust package.

Technical Specifications

Model	8-1B	YHZ-8-4	YHZ-8-8	YHZ-8-7
Max Flow	25L/min	25L/min	89L/min(A.B.C.D)&62L/min(E.F)&5L/min(G.H)	80L/min
Max Pressure	25Mpa	25Mpa	35MPa(A.B.C.D.E.F)&7.5MPa(G)&0.3MPa(H)	25Mpa
Diameter	6mm	6mm	12mm(A.B.C.D)&10mm(E.F)&6mm(G.H)	6mm(A.H)&8mm(B.C)&12mm(D.E.F.G)
NO.of Rotational Channels	8	8	8	8
Weight	10.4Kg	18.4Kg	20.9Kg	13.8
Oil Port Thread	M14×1.5 D=22 L=13	M14×1.5 D=22 L=13	M24×1.5 D1=38 L1=20 D2=27.6 L2=4.2(A.B.C.D)	G1/4 D1=24 L1=13 D2=15.6 L2=2.5(A.H)

Drawings & DimensionsDetailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

After Sales ServiceStandard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.Company Profile

Shandong Yikaide Hydraulic Co., Ltd.Shandong Yikade Hydraulic Co., Ltd. is a National High-Tech Enterprise specializing in hydraulic rotary unions and key hydraulic components. Headquartered in Zoucheng, Shandong, the company holds over 37 patents and is certified to ISO9001 and CE standards. Yikade's products are trusted by leading OEMs and exported to global markets, with a reputation for reliable quality and over 20 years of manufacturing expertise.

Why Choose Us?Other Products20+ Years of Expertise. Specialized in hydraulic rotary unions with proven manufacturing excellence and industry know-how.CE & ISO9001 Certified. Products meet international standards for quality, safety, and environmental compliance.Trusted by Global OEMs. Our components power attachments for leading brands including Lonking Group.Overcentre ValveSolenoid ValveCheck ValveMulti Way ValveHydraulic Hand PumpHydraulic MotorFAQQ:Are you trading company or manufacture?
A:We are manufacture which have the right to import and export.
Q:Do you support retail, or only wholesale?
A:We support both retail and wholesale. Whether you place a small order for trial or a bulk order for long-term cooperation, we can meet your needs. We also provide professional 1-piece dropshipping service to make your purchase more convenient and flexible.
Q:Do you support customization?
A:Yes.We can customize products according to your requirements on size, pressure, material, structure and other parameters to better match your hydraulic system
Q:What is your process for a custom rotary union solution?
A:First, contact us to Get Started. Our team will reach out to you to start learning more about your project's technical and delivery requirements. We will consider all aspects of your application and work together to develop the best solution.
Q:How long is your delivery time?
A:Generally it is 5-10 days if the goods are in stock or it is 30-40 days if the goods are not in stock.
Q:What is your terms of payment?
Payment less than 1000 USD,100% in advance.Payment more than 1000 USD,30% T/T in advance,balance before shipment.