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RITO EX400H-3 Hydraulic Swing Motor 4334276 9133435 Excavator 9138912 Slewing Motor Swing Drive Assembly Assy Swing Drive Motor

RITO EX400H-3 Hydraulic Swing Motor 4334276 9133435 Excavator 9138912 Slewing Motor Swing Drive Assembly Assy Swing Drive Motor

Facing swing instability, hydraulic pressure drop, or rotary drive wear in EX400H-3 heavy-duty fleets? Mining contractors, wholesalers, and service workshops need dependable slewing systems to avoid costly downtime and maintain stable production output. RITO EX400H-3 Hydraulic Swing Motor 4334276 delivers strong torque performance and efficient hydraulic-to-rotational conversion for reliable excavator swing operation.

Item NO.:
4334276
Order(MOQ):
1
Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPAL
Product Origin:
JAPAN
Lead Time：
2-3 DAYS

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Product Details

Compared with standard aftermarket swing motors, it enhances internal gear stability, reduces mechanical loss, and maintains consistent performance under continuous mining cycles. Designed for OEM/OEM-equivalent supply, it supports bulk procurement and stable compatibility across mining, quarrying, and large-scale earthmoving applications.

Product Specifications

Part Number	4334276 / 9133435 / 9138912
Part Name	Excavator Hydraulic Slewing Motor & Swing Drive Assembly Assy Swing Drive Motor
Compatible Brand	HITACHI
Applicable Models	EX400H-3 Heavy Mining Excavator
Application	Upper body slewing rotary hydraulic drive system for large mining excavators
Material	Thick high-strength alloy steel + heavy-duty wear-resistant bronze friction components
Product Color	Matte anti-rust industrial metallic gray
Working Temperature	-22℃ to +58℃
Key Function	Convert high-pressure heavy hydraulic power into stable ultra-heavy slewing torque to drive upper body rotation for hard rock mining, mountain stripping and large aggregate loading mining projects
Condition	100% New, Aftermarket / OEM Quality
Packaging	Thick Wooden Case / Reinforced Export Carton / Neutral Packing / Customized Package

Key Features & Advantages

High-Torque Swing Performance

Ensures stable rotation under extreme working loads.

Efficient Hydraulic Conversion System

Improves energy transfer from hydraulic pressure to rotary motion.

Reinforced Heavy-Duty Structure

Built for continuous mining operation and harsh environments.

OEM-Compatible Assembly Standard

Matches 4334276 / 9133435 / 9138912 specifications for EX400H-3 systems.

FAQ

Q: What causes weak swing torque in EX400H-3 hydraulic swing motor systems?
A: It is commonly caused by hydraulic pressure instability, internal valve wear, or gear wear inside the motor assembly.

Q: What should be checked before installing a 4334276 swing motor assembly?
A: Inspect hydraulic oil cleanliness, confirm mounting alignment, and verify system pressure stability.

Q: How can abnormal vibration in a swing motor be diagnosed?
A: It is often related to bearing wear, uneven gear meshing, or inconsistent hydraulic flow distribution.

Q: What working conditions most affect EX400H-3 swing drive lifespan?
A: Continuous overload, poor filtration, abrasive dust environments, and extreme temperature variations significantly reduce durability.

Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies

Related Tags :

4334276

Swing Motor

Hitachi Swing Motor

EX400H-3 Swing Motor

Excavator Rotary Motor

Swing Reduction Unit

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Subject : RITO EX400H-3 Hydraulic Swing Motor 4334276 9133435 Excavator 9138912 Slewing Motor Swing Drive Assembly Assy Swing Drive Motor

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