Products

RITO Roller Bearing 1.109-00066 DX380LC-3 DX340LC-3 DX420LC-3 Excavator Swing Bearing Turntable Bearing for Doosan

When excavator swing mechanisms fail on-site, mining projects instantly stall and hemorrhage cash. Weak factory components quickly warp under constant, high-impact digging loads. Forcing operators to rely on subpar parts creates severe budget strains and hazardous operational bottlenecks.

  • Item NO.:

    1109-00066
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details
Specially forged for Doosan DX340LC-3, DX380LC-3, and DX420LC-3 machinery, this heavy-duty RITO slewing ring offers unmatched structural reinforcement. B2B buyers secure absolute structural integrity, flawless gear meshing, and the ultimate defense against unscheduled fleet maintenance.

1109-00066 Roller Bearing

 
Product Specifications

Part Number  1.109-00066
Part Name Excavator Swing Bearing
Compatible Brand Doosan
Applicable Models Doosan DX340LC-3, DX380LC-3, DX420LC-3
Application Excavator hydraulic system
Material High-Strength Alloy Steel
Product Color Metallic Silver and Black
Working Temperature From -30 to 120 Degrees Celsius
Key Function 360 Degree Rotational Force Transmission
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Heavy-Duty Durability

Engineered for high-load mining environments to prevent structural deformation.
Leak-Free

Precise Machinery Fit

Drop-in rotation accuracy for specified Doosan excavator models.
Direct Fitment

Extended Service Life

Specialized heat treatment reduces wear and cuts maintenance cycles.

Rigorous Testing

Optimal Load Distribution

Advanced roller design handles combined radial and axial thrust smoothly.

 
 

 

Excavator Hydraulic Part

FAQ


Q: What early warning signs indicate that a Doosan turntable bearing needs immediate replacement?
A: Metallic grinding noises, increased rotational play, and metallic flakes in the gear grease signify advanced internal raceway wear. Ignoring these signs risks catastrophic gear ring breakage and complete upper-structure immobilization.
 
Q: What critical procedures must be followed during the installation of this roller bearing?
A: Technicians must ensure perfect mounting surface flatness, utilize a calibrated torque wrench to tighten bolts in a cross-pattern, and position the soft zone marked "S" away from the primary load zone to prevent premature failure.
 
Q: How can fleet managers verify that the 1.109-00066 bearing matches their specific excavator configuration?
A: Cross-reference your machine serial plate with Doosan parts manual specifications for DX340LC-3, DX380LC-3, or DX420LC-3. Confirming the exact gear tooth count and mounting hole layout prior to shipment guarantees absolute compatibility.
 
Q: How does this bearing maintain structural integrity under severe shock loads and sub-zero mining conditions?
A: RITO utilizes premium quenched steel alongside specialized lip seals to retain high-viscosity grease. This design retains outer ring elasticity down to -30 degrees Celsius, resisting shock cracking and preventing fine abrasive dust ingress.
 

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 Companies

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

420-00342B remote control valve LH
RITO Excavator Control Valve LH 420-00342B EX200 ZX200 ZX210 Hydraulic Pilot Valve Joystick Assembly for Excavator

This RITO 420-00342B Hydraulic Pilot Control Valve (LH) is a key control component for Hitachi EX200, ZX200, and ZX210 excavators, designed to transmit precise pilot pressure signals from the joystick to the main control valve. It ensures smooth operation, accurate response, and stable control of the arm, bucket, and travel functions in construction environments.  

View More
420-00343B remote control valve RH
RITO Excavator Control Valve RH 420-00343B EX200 ZX200 ZX210 Hydraulic Pilot Valve Joystick Assembly for Construction Machinery

This RITO 420-00343B Hydraulic Pilot Control Valve (RH) is a key control component for Hitachi EX200, ZX200, and ZX210 excavators, designed to transmit precise pilot pressure signals from the right-hand joystick to the main control valve. It ensures smooth operation, accurate response, and stable control of the arm, bucket, and travel functions in construction environments.  

View More
130425-00010 Swing Reduction Sun Gear
RITO Swing Reduction Sun Gear No.2 130425-00010 Swing Reduction Gear Sun Gear for Excavator

The RITO Swing Reduction Sun Gear No.2 130425-00010 is an essential component designed for excavators, particularly in the swing reduction system. This high-performance sun gear plays a critical role in ensuring the smooth operation of the excavator's swing mechanism, providing efficient power distribution to the swing motor. Ideal for wholesale distributors, dealers, and mining companies, the 130425-00010 guarantees long-lasting durability and reliable performance under heavy-duty conditions. With its robust design, it minimizes downtime and maintenance costs, ultimately increasing the productivity of the machinery. Whether for routine replacements or high-performance upgrades, this swing reduction gear sun gear ensures excellent operational efficiency in challenging environments.

View More
100502-00039 Planet Carrier
RITO Excavator Swing Carrier Assy 1st Sun Gear 100502-00039 Planet Carrier for Excavator

The RITO Excavator Swing Carrier Assy 1st Sun Gear 100502-00039 is a crucial component designed for excavator swing systems, offering high efficiency and durability in heavy-duty operations. This planet carrier assembly plays a key role in the swing reduction system, ensuring smooth torque distribution and precise control of the excavator's swing motion. Whether for routine maintenance or heavy-duty replacement, the 100502-00039 provides a cost-effective solution for maintaining excavator functionality. Wholesale distributors, dealers, and mining companies can rely on this robust assembly to keep their machinery running smoothly, reducing downtime and enhancing productivity in demanding industrial applications.

View More
100502-00037 Swing Carrier Assy
RITO Swing Reduction 1st Planet Gear Assy 100502-00037 Swing 2nd Carrier Assy Final Drive Part

The RITO Swing Reduction 1st Planet Gear Assy 100502-00037 is an essential component for excavator swing reduction systems, designed to enhance the performance of the final drive system. This 1st planet gear assembly and swing 2nd carrier assembly work together to efficiently transfer torque, ensuring smooth and reliable swing operations under demanding conditions. The 100502-00037 is crucial for minimizing downtime and improving the overall operational efficiency of heavy machinery, making it an ideal solution for wholesalers, dealers, and mining companies. It is built to withstand high torque and pressure, offering superior durability and performance even in harsh working environments.

View More
2404-1065 Pinion Gear
RITO Swing Pinion Gear 2404-1065 Pinion Gear 14 Teeth for Doosan Solar 340LCV Excavator

Targeting wholesalers, agents and mining operators, this 2404-1065 14-tooth swing pinion gear is a critical drive part for Doosan Solar 340LCV excavators. It solves B2B pain points like short service life, poor matching and frequent breakdowns. Superior to ordinary gears, it delivers high hardness, wear resistance and precise transmission to cut mining operation downtime and maintenance costs.

View More
120501-01078 Arm Cylinder Head Pin
RITO Cylinder Head Pin 120501-01081 for Doosan DX300LC Excavator Boom Arm Cylinder

Mine/construction fleets face costly downtime from worn cylinder pins; generic parts fail fast, delaying projects and inflating costs for wholesalers/agents. Attention: RITO Cylinder Head Pin 120501-01081 fits Doosan DX300LC boom/arm cylinders. Solution: Precision-machined, high-grade steel reduces wear; OEM/OEM/aftermarket options stabilize supply, cut downtime and inventory risks.

View More
130422-00095A Sun Gear
RITO Swing Reduction Gear Ring 130422-00095A 130425-00010 100502-00039 Sun Gear for Excavator Swing Drive

130422-00095A / 130425-00010 / 100502-00039 solve downtime nightmares: mining & contractor fleets see 40% longer swing drive life vs low-grade alloys. Precision forged teeth reduce shock load failures, cut unplanned service calls. Stock ready for urgent rebuilds.

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