Joint Assy Coupling 3F3004053 for Komatsu PC35R

3F3004053 coupling assembly for PC45R excavator

3F3004053 Excavator Joint Assy Coupling – PC35R, PC45R, SK07J, SK714, SK815, SK818, SK820

Heavy‑duty coupling joint assembly for Komatsu and Hyundai mini‑excavators, ensures reliable hydraulic rotation.

Product Features

Precision-engineered to OEM specifications for Komatsu and Hyundai models
Built with high-strength alloy and resilient seals for optimal durability
Easy drop-in replacement, reduces installation time
Designed to withstand high hydraulic pressures and rotational torque
Extends hydraulic joint life and minimizes leaks under heavy use

Get A Free Quote

Joint Assembly Description

The 3F3004053 Joint Assy Coupling is engineered for the Komatsu PC35R, PC45R and Hyundai SK-series mini-excavators (models SK07J, SK714, SK815, SK818, SK820). Designed to meet or exceed OEM specifications, this assembly integrates a forged alloy core with high-performance rubber seals, ensuring precise hydraulic coupling and smooth rotary movement. The robust construction resists wear, pressure, and fatigue—offering consistent operation in construction, utility, and landscaping environments. Drop-in replacement design simplifies service and reduces downtime. Ideal for B2B buyers from maintenance teams, rental companies, or construction firms seeking reliable hydraulic joint performance with long service intervals.

Joint Assembly Technical/Data Sheet

Parameter	Description
Applicable Models	Komatsu PC35R, PC45R; Hyundai SK07J, SK714, SK815, SK818, SK820
Part Number	3F3004053
Category	Rotary Joint Coupling Assembly
Materials	Alloy steel body, synthetic rubber seals
Documentation	Installation guide and dimensional drawing included (PDF)
Installation Position	Hydraulic rotary coupling
Origin	China
Brand	YNF Rubber
MOQ	10 units
Shipping	Sea freight, air freight
Payment Terms	T/T, L/C

Get Free Quote of Joint Assy

YNF Rubber’s 3F3004053 joint coupling assembly is built to match OEM standards, offering heavy-duty durability and quick installation. It reduces hydraulic leakage and enhances joint reliability—making it an excellent aftermarket choice for Komatsu and Hyundai mini-excavators. Contact us now for a free quote and technical guidance within 24 hours.

Get A Free Quote Now

Products Categories

Flexible Rubber Couplings

CF-H Couplings

CF-A Couplings

FLANGE Couplings

Spline Hubs

Gear Hubs

S Series Couplings

KY Series Couplings

CB Series Couplings

TFC Couplings

Damper

Clutch

KE Series Couplings

YC Series Couplings

GC Series Couplings

Rubber Blocks

J Series Couplings

HRC Couplings

NM Couplings

HEX Couplings

Flexmaster System (Hose Coupling)

Rubber Mounts

FOR BREAKERS / COMPACTORS

EXCAVATOR ENGINE MOUNTS

EXCAVATOR CAB SHOCK ABSORBER

Cylindrical Bobbins

Captive Transit Mountings

Rubber Hoses

Radiator Water Hose

Intake Manifold

Bypass Hose (Water Pump Hose)

Oil-Proof Hose

Other Hoses

Hose Clamps

Silicone Hoses

Hydraulic Seals

By Brands

for Bobcat machines

for Case machines

for Caterpillar machines

for Doosan / Daewoo machines

for Hitachi machines

for Hyundai machines

for Komatsu machines

for TAKEUCHI machines

for Volvo machines

for Yanmar machines

for Terex machines

for Air Compressor

for Kobelco machines

for JCB machines

for Kato machines

for New Holland machines

for Dynapac machines

Get A Free Quote

Joint Assembly Applications

Application Scenario	Description
Mini Excavators	Rotary coupling for PC35R, PC45R, SK07J, SK714–SK820
Hydraulic Machinery	Suited for utility and construction equipment requiring swivel joints
Service & Rental Workshops	Ideal for quick replacement in high-turnover maintenance environments
Civil & Landscaping Projects	Ensures reliable rotation in trenching, digging, and site leveling tasks

Joint Assembly Detail Display

More Information

Knowledge Base

Role of joint coupling assemblies in excavator hydraulic systems
Common wear failure points and inspection intervals
Benefits of alloy steel and synthetic seals in rotary joints

Related Products

YNF04500 End Cap Seal Kit for PC35R hydraulic motor
YNF04610 Swing Bearing Seal Kit for SK800‑8 excavator

FAQs

Is this assembly fully compatible with OEM joints?
Yes. The 3F3004053 assembly is manufactured to precise OEM tolerances for exact fit.
How soon can I receive samples?
Samples: shipped within 7 business days; sea freight: 30–45 days; air: 7–10 days.
Do you offer custom branding?
Bulk orders can include OEM packaging and logo labeling upon request.