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RITO 39Q7-12101 Swing Gearbox Assembly 39Q712101 Swing Reduction Gear Slewing Gearbox Excavator Swing Drive Device Parts

Frequent excavator upper-structure shaking or rotation lag? Worn slewing gears slow down your mining productivity and compromise site safety. The heavy-duty 39Q7-12101 Swing Gearbox Assembly offers robust torque transmission, ensuring smooth, precise 360-degree rotation control.
  • Item NO.:

    39Q7-12101
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Eliminate operational bottlenecks and costly mechanical friction. Equip your fleet with the 39Q712101 swing drive device to achieve OEM-standard rotation efficiency, reduced gear backlashes, and extended service life under continuous high-impact loading.

39Q7-12101 Swing Gearbox

 
Product Specifications

Part Number  39Q7-12101 / 39Q712101
Part Name Swing Gearbox Assembly
Compatible Brand Hyundai
Applicable Models Hyundai Machine
Application Excavator hydraulic system
Material Premium Cast Aluminum and Alloy Steel
Product Color Industrial Gray
Working Temperature -40°C to 120°C
Key Function Upper-structure swing reduction and torque control
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

High-Precision Slewing Gear

CNC-machined internal gears provide flawless meshing to eliminate jerky movements and cabin vibrations during operation.

Leak-Free

Impact-Resistant Casting

Built with premium ductile iron housing that withstands massive lateral stress during heavy structural swinging.

Direct Fitment

Optimized Lubrication Channel

Internal oil paths are advanced to deliver continuous thermal dissipation and wear protection to planetary bearings.

Rigorous Testing

Global Supply Tiering

We offer Original, OEM, and high-performance Aftermarket options to provide flexible procurement strategies for diverse regional markets.

 

Excavator Hydraulic Part

FAQ


Q: What specific vibrations or noises indicate that our excavator swing gearbox is facing imminent gear striping?
A: Loud metallic clunking when stopping the swing or excessive play in the upper structure are critical alerts. Our assembly utilizes induction-hardened gear teeth to resist sudden shearing, absorbing high inertial shock loads from heavy bucket swings.
 
Q: Are there specialized alignment guidelines our workshop team must monitor to prevent premature shaft wear during setup?
A: Yes, you must inspect the main swing bearing for radial play before installation and verify that the pinion gear meshes evenly with the ring gear. Misalignment leads to uneven stress, so clearing old grease and debris from the mounting bed is mandatory.
 
Q: How do procurement officers confirm the exact spline count and flange dimensions match their fleet requirements?
A: We provide precise technical blueprints detailing the drive shaft spline parameters and mounting bolt circles. Cross-checking your existing unit's serial tag with our verified OEM crossover catalog ensures complete drop-in compatibility.
 
Q: How does this slewing device maintain smooth rotational torque under freezing temperatures or high-heat mine fields?
A: It integrates specialized low-temperature resilient seals and a ventilated housing design that accommodates extreme ambient ranges. It prevents thermal expansion lockups in deserts and maintains oil film integrity in arctic zones, keeping your rotation fluid.
 

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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