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RITO Excavator Travel Gearbox 1st Sun Gear XKAQ-00203 SUN GEAR Travel Reduction Sun Gear Final Drive Shaft For Sale

First-stage sun gear wear causes slow travel & track timing errors. XKAQ-00203 integrates gear teeth + final drive shaft in one forged unit. Eliminates spline loose fit. Restore straight line tracking now.

  • Item NO.:

    XKAQ-00203
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Why assemble separate gears and shafts when they wear out faster? XKAQ‑00203 delivers a unified design with hardened tooth flanks and a flexible shaft core. The result? 35% longer service life compared to traditional two‑piece setups. Three grades (OEM/OEM+/Aftermarket) ready for wholesalers and miners.

XKAQ-00203 Sun Gear

 
Product Specifications

Part Number  XKAQ-00203
Part Name Sun Gear
Compatible Brand HYUNDAI
Applicable Models
R250LC-7 R250L-C9 R260LC-9S R330LC-9S R320LC-7
Application Excavator hydraulic system
Material 42CrMo forged alloy steel
Product Color Black manganese phosphate coating
Working Temperature -40°C to +100°C
Key Function First-stage torque input from hydraulic motor; transfers power to planet gears; serves as final drive shaft
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Integral Forged Construction

Gear teeth and shaft are one solid piece, eliminating spline looseness and torsional backlash common in assembled units.

Leak-Free

Selective Hardening Technology

Teeth case-hardened to HRC 58-62 while shaft core maintains HRC 32-38 for impact toughness and bend resistance.

Direct Fitment

Precision Ground Gear Profile

AGMA Class 10 finish ensures quiet operation and equal load sharing across all first-stage planet gears.

Rigorous Testing

Direct Track Drive Fit

Engineered for travel reduction units on Hyundai R330-9 and compatible 30-ton class excavators.

 

Excavator Hydraulic Part

FAQ


Q: How to tell if first-stage sun gear shaft is bent versus tooth wear only?
A: Bent shaft causes rhythmic track vibration that changes with rotation speed. Tooth wear alone produces constant whining. Dial indicator runout >0.1mm confirms bent shaft - replace immediately.
 
Q: What is the critical pre-installation check for XKAQ-00203?
A: Verify the input shaft bearing inner race fits snugly without hammering. Required interference fit is 0.01-0.03mm. Loose fit will spin bearing race and destroy both shaft and housing.
 
Q: Will XKAQ-00203 fit if my travel gearbox is from a different brand?
A: Please provide your original sun gear tooth count, module, shaft diameter at bearing journals, and overall length. We cross-match to Hitachi, Kobelco, Caterpillar, and Volvo 30-ton travel drives.
 
Q: Does this integral shaft survive rocky terrain shock loads and freezing conditions?
A: Yes – 42CrMo forged steel passes -40°C Charpy impact test. The ductile shaft core absorbs shock loads from uneven ground while hard teeth resist abrasion. Proven in quarry blasting and Siberian winter operations.
 
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

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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.

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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.

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