Products

RITO Original Excavator Gear 441-7739 4417739 Drive Gear 320D 320DL 330D Hydraulic Pump Gear for Excavator Parts

Facing unexpected hydraulic pump gear failures, costly downtime, and frequent replacements in mining & construction? 441-7739 (4417739) RITO Drive Gear solves these issues. As an original hydraulic pump gear for 320D/320DL/330D excavators, it delivers OEM-grade durability, reduces maintenance costs, and supports bulk orders—ideal for wholesalers, agents, and mine clients.

  • Item NO.:

    441-7739
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details
Boost your excavator hydraulic power delivery with 441-7739 (4417739) Original Drive Gear. It stands up to tough mining and construction working conditions, adopting high-strength hardened steel and fine gear tooth cutting craftsmanship. It keeps hydraulic systems running steadily, cuts idle downtime effectively, and gains wide recognition among wholesalers, agents and mine customers for stable quality and long service life.

441-7739  Gear

 
Product Specifications

Part Number  441-7739
Part Name Excavator Planetary Gear
Compatible Brand Caterpillar
Applicable Models Excavator 320D, 320DL, 330D
Application Excavator hydraulic system
Material High-carbon hardened steel, wear-resistant alloy coating
Product Color Steel Grey
Working Temperature -20°C to +120°C
Key Function Hydraulic pump power transmission, torque conversion, system stability support
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Hardened Steel Durability

Made of high-grade hardened steel, resisting wear, impact, and corrosion for long-term performance in harsh mining and construction conditions.

Leak-Free

OEM Precision Fit

Exact dimensions match OEM specifications, ensuring seamless installation and perfect meshing for 320D/320DL/330D excavator hydraulic pumps.

Direct Fitment

Stable Power Transmission

Precision-machined gear teeth deliver smooth, efficient power transfer, reducing vibration and noise while extending hydraulic pump service life.

Rigorous Testing

Cost-Effective Reliability

Original-quality replacement prevents premature failures, cutting unplanned downtime and maintenance costs for mine and construction fleets.

 

 

Excavator Hydraulic Part

FAQ


Q: What symptoms indicate a faulty hydraulic pump gear needing 441-7739 replacement?
A: Common signs include unusual noise, vibration, hydraulic pressure loss, slow operation, or metal debris in oil—critical to avoid pump damage and downtime.
 
Q: What key steps ensure proper installation of 441-7739 drive gear?
A: Clean all components, check gear tooth alignment, torque bolts to OEM specs, use recommended lubricant, and verify meshing—prevents wear and ensures stable operation.
 
Q: How to confirm 441-7739 fits my excavator model?
A: Cross-reference part number with OEM manual, verify excavator model (320D/320DL/330D), and check hydraulic pump compatibility list—avoids mismatched parts and returns.
 
Q: Can 441-7739 withstand extreme mining conditions (high load, dust, temperature)?
A: Yes—hardened steel and anti-corrosion coating resist heavy loads, dust ingress, and temperature fluctuations, maintaining performance in -20°C to +120°C for heavy-duty use.
 
Q: What support is available for wholesalers/agents ordering 441-7739 in bulk?
A: Bulk discounts, original quality guarantee, technical installation guides, and 12-month warranty—reduces procurement risks and supports long-term B2B partnerships.
 

Q: What quality options are available?

A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.

Q:Why Choose RITO?

A:Listed Factory

Stable&Reliable Quality

OEM Factory for Chinese Top Excavator Brands

Supplier to Fortune 500 Companie
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Related Products

320CLZBYG Stick cylinder
RITO Excavator Stick Cylinder 320CLZBYG ZX120 ZX200 ZX210 EX200-1 Hydraulic Boom Cylinder Arm Cylinder for Construction Machinery

RITO Excavator Stick Cylinder is built for ZX120, ZX200, ZX210, EX200-1, and 320CLZBYG. For distributors and agents: high interchangeability reduces inventory complexity. Mining customers benefit from reinforced sealing and shock resistance, lowering downtime and maintenance costs.    

View More
527-0741 527-0742 Hydraulic Main Pump
RITO Hydraulic Pump Coupling Hub 527-0741 527-0742 for Caterpillar CAT 336GC 336D 15 Teeth Flange Coupling Group

This RITO 527-0741 527-0742 Hydraulic Pump Coupling Hub is a key transmission component for Caterpillar CAT 336GC and 336D excavators, designed to connect the engine and hydraulic pump with stable torque transfer. Featuring a 15-tooth flange structure, it ensures precise alignment, smooth power delivery, and reliable operation in demanding construction environments.

View More
124-1607 Hydraulic Oil Cooler
RITO Hydraulic Oil Cooler 124-1607-OT CAT 320C 320D 325D 330D Excavator Oil Cooler Core Radiator Assembly for Caterpillar

This RITO 124-1607-OT Hydraulic Oil Cooler is a key cooling component for Caterpillar CAT 320C, 320D, 325D, and 330D excavators, designed to effectively dissipate heat from hydraulic oil and maintain optimal system temperature. It ensures stable oil viscosity, protects internal components, and supports reliable operation in demanding construction environments.

View More
234-4440
RITO Excavator Swivel Joint 234-4440 CAT 336D 325D 330D Travel Motor Lines Hydraulic Rotary Union for Caterpillar

This RITO 234-4440 Swivel Joint (Rotary Union) is a critical hydraulic component for Caterpillar CAT 336D, 325D, and 330D excavators, designed to transfer hydraulic oil between the upper structure and undercarriage during continuous rotation. It ensures stable oil flow to travel motors, maintaining smooth operation and reliable performance in construction environments.

View More
585-9230 Solenoid Valve
RITO Original Solenoid Valve 585-9230 Excavator Hydraulic Solenoid Valve Proportional Valve for CAT

Hydraulic lag and erratic pressure in CAT excavators often signal a failing proportional valve, causing costly site delays. The 585-9230 eliminates these inefficiencies. Precision-engineered for mining and heavy construction, it prevents system overheating and jerky boom movements.

View More
585-9230 Solenoid Valve
RITO Original Solenoid Valve 585-9230 Excavator Hydraulic Solenoid Valve Proportional Valve for CAT

Hydraulic lag and erratic pressure in CAT excavators often signal a failing proportional valve, causing costly site delays. The 585-9230 eliminates these inefficiencies. Precision-engineered for mining and heavy construction, it prevents system overheating and jerky boom movements.

View More
179-6916 Spring
RITO Excavator spring Coil Spring 179-6916 spring for CAT

The RITO Excavator Coil Spring 179-6916-Y is designed for heavy-duty applications in CAT excavators, offering reliable and long-lasting performance in demanding work environments. This high-quality spring ensures consistent and efficient load-bearing capability, reducing wear and tear on critical excavator components. The 179-6916-Y is essential for maintaining optimal machine performance in industries such as construction and mining. By minimizing downtime and maintenance costs, this coil spring enhances productivity and contributes to the long-term durability of your fleet. Designed for seamless compatibility with various CAT excavator models, it provides an ideal replacement solution for wholesale distributors and agents.

View More
291-0061 Fan Piston Pump
RITO Hydraulic Axial Piston Pump 291-0061 Hydraulic Fan Piston Pump for Excavator Main Pump Assembly

Unstable fan speeds and hydraulic overheating often stem from inefficient pump pressure. In grueling mining sites, a failing fan pump leads to engine derating and massive downtime. The 291-0061 solves these thermal inconsistencies, preventing the costly "cascading failures" that plague heavy excavator fleets.

View More
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Home

Products

whatsApp

contact