21420-16400 coupling for Airman PDS390 compressor

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21420-16400 Driven Coupling for Airman PDS390 / PDS265S Compressors | OEM Replacement 21420-16400R

Durable driven coupling 21420-16400 for Airman compressors PDS390, PDS390SC, PDS265S – built for excavator and compressor systems.

OEM replacement for Airman part numbers 21420-16400 / 21420-16400R
Designed for PDS390, PDS265S, PDS390SC, PDS3905-481/581, PDS390S-4B1 models
Engineered to absorb torsional vibration and maintain shaft alignment
Heavy-duty rubber compound resists oil, heat, and mechanical fatigue
Trusted choice for air compressor OEMs and construction machinery suppliers

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21420-16400 Coupling Description

The 21420-16400 Driven Coupling is a high-performance rubber torsional coupling specifically developed for Airman portable air compressors, including models PDS390, PDS3905-481, PDS265S, and PDS390SC. It replaces OEM part numbers 21420-16400 and 21420-16400R, offering exact fitment and performance consistency.

Designed to be mounted between the engine and compressor input shaft, this coupling ensures smooth power transfer while isolating vibration and reducing shaft misalignment. The use of high-durability elastomeric materials guarantees extended service life under harsh working conditions.
It is widely used by maintenance teams, OEMs, and equipment rental providers looking for reliable coupling replacements in air compressor and excavator support systems.

21420-16400 Coupling Technical Sheet

Parameter	Details
OEM Part Number	21420-16400 / 21420-16400R
YNF Part No.	YNF-CPL-21420
Compatible Models	PDS390 / PDS265S / PDS390SC / PDS3905D-481 / PDS390S-4B1
Coupling Type	Driven Flexible Rubber Coupling
Install Location	Between engine and compressor drive shaft
Material	High-strength rubber + steel insert
Application	Airman portable air compressors
MOQ	5 Unit
Operation Manual	Provided upon request
Brand	Y&F
Country of Origin	China
Payment Terms	T/T, L/C, PayPal
Shipping	Air, Sea, Express (DHL/UPS/FedEx)

Get Quote for 21420-16400 Coupling

YNF Rubber offers premium-grade replacements for Airman air compressor couplings, including the 21420-16400 driven coupling. Designed to replace the original parts with perfect fit and reliability, our couplings are trusted by OEMs, contractors, and equipment rental companies around the world.

Whether you’re maintaining a fleet of PDS390 compressors or managing on-site drilling operations, this coupling ensures smooth and consistent performance with minimal vibration and high durability.
Contact us today to get a competitive quote, technical support, and global shipping options.

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21420-16400 Coupling Applications

Industry Sector	Application Area
Construction Machinery	Portable diesel air compressor systems
Mining Operations	Site-based air compression units in drilling operations
Road Maintenance	Air-powered equipment powered by Airman compressors
Equipment Rental	Regular replacement part for compressor fleet maintenance
OEM Supply Chains	Sourcing replacement couplings for Airman PDS-series units

21420-16400 Coupling Detail Display

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Rubber Coupling Knowledge

What does a driven coupling do in air compressors?
It connects the engine to the compressor, transferring torque while absorbing vibration and protecting both shafts from misalignment damage.

What are signs of a worn-out coupling?
Excessive vibration, strange noises, heat at the coupling area, or performance drops often indicate coupling failure.

FAQs

Q1: Can this coupling be used on other Airman models?
It is optimized for models listed above. For others, please send us the compressor model and OEM part number for verification.

Q2: Is technical documentation provided?
Yes, operation and installation guides are available on request.

Q3: Do you support bulk order discounts?
Yes. Please contact our sales team for bulk pricing based on quantity and destination.

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