140AS Flexible Rubber Coupling for Excavator Hydraulic Pump | Round Type Pump Coupling

The 140AS Flexible Rubber Coupling is a heavy-duty hydraulic pump coupling designed for compatible excavators, construction machinery, and industrial hydraulic equipment.

Installed between the engine drive system and hydraulic pump, this flexible coupling helps transmit rotational power while absorbing vibration, shock, and minor misalignment. Its durable rubber construction helps reduce impact loads on connected components and supports smooth, reliable hydraulic pump operation.

The 140AS round type coupling is an ideal replacement for worn, cracked, hardened, or damaged pump couplings and is suitable for excavator hydraulic system maintenance, repair, and overhaul applications.

Manufactured from durable flexible rubber designed to provide good elasticity, wear resistance, and reliable performance in demanding heavy-equipment applications.

The flexible structure helps absorb vibration and shock generated between the drive system and hydraulic pump, reducing stress on connected components.

Designed to efficiently transfer rotational power to the hydraulic pump while maintaining smooth and stable operation.

The flexible coupling structure can accommodate limited alignment variation between connected components, helping reduce unnecessary mechanical stress.

Integrated metal mounting sections provide secure connection points and help maintain structural strength during operation.

The 140AS round coupling configuration is designed for compatible hydraulic pump drive systems commonly found in excavators and construction machinery.

Provides a practical replacement solution for worn or damaged hydraulic pump couplings, helping simplify equipment maintenance and reduce downtime.

The 140AS Hydraulic Pump Coupling can be used in compatible:

• Excavators
• Hydraulic pumps
• Construction machinery
• Heavy equipment
• Industrial hydraulic systems
• Engine-to-pump drive systems
• Earthmoving machinery

It is particularly suitable for hydraulic systems requiring a flexible connection between the engine drive and hydraulic pump.

A hydraulic pump coupling connects the driving component to the hydraulic pump and transfers rotational power during machine operation.

Unlike a completely rigid connection, a flexible rubber coupling can help absorb vibration and shock generated by the engine and hydraulic system.

This helps:

• Reduce vibration transmission
• Absorb sudden shock loads
• Protect connected components
• Reduce mechanical stress
• Support smoother pump operation
• Improve reliability of the drive connection

A hydraulic pump coupling is a wear component and should be inspected during routine maintenance.

Common signs that replacement may be required include:

• Cracked rubber
• Hardened or deteriorated rubber
• Excessive deformation
• Damaged metal inserts
• Increased vibration
• Abnormal noise around the pump drive
• Excessive movement between connected components
• Difficulty transmitting power to the hydraulic pump

If coupling damage is found, the alignment and condition of surrounding components should also be inspected before installing a replacement.

This product is identified as a 140AS Round Type Flexible Coupling.

Before ordering, please compare the following with your existing coupling:

• Coupling model
• Outside diameter
• Inside diameter
• Overall thickness
• Number of mounting positions
• Mounting-hole dimensions
• Metal insert configuration
• Original coupling appearance

Different excavator and hydraulic pump configurations may use visually similar couplings with different dimensions.

For accurate fitment verification, send us your excavator model, hydraulic pump model, coupling number, dimensions, and photos of the original coupling.

JISION supplies replacement hydraulic, engine, electrical, and mechanical parts for excavators and construction machinery.

• Professional excavator parts supplier
• Reliable aftermarket hydraulic parts
• Strict quality inspection before shipment
• Worldwide shipping available
• Professional compatibility verification
• Wholesale and bulk order support
• Technical support
• After-sales service

Looking for a 140AS Flexible Rubber Coupling for an excavator hydraulic pump?

Contact JISION with your machine model, hydraulic pump model, coupling dimensions, and original product photos. Our team can help verify the correct coupling before shipment and provide pricing, availability, shipping, and wholesale information.

Model: 140AS
Product: Flexible Rubber Hydraulic Pump Coupling
Type: Round Type Coupling
Application: Excavator Hydraulic Pump / Construction Machinery
Condition: New