Urethane Bumpers, Dimension Configurable Type

■Material Table

Standard Grade / Precision Grade	With Hole Type	No Hole Type	Material	Hardness	Color (Photo No.)	Standard Grade / Precision Grade
Normal	E-AXFS	E-CXFS	Standard urethane	Shore A95	(1) Natural color or black	Outer Diameter D6 to D30 Length L10 to L200 Inner Diameter V2 to V26 When V2, L ≤ 50 When D6, L ≤ 50
	E-AXFH	E-CXFH	(Ether type urethane)	Shore A90
	E-AXFM	E-CXFM	Standard Polyurethane (Ester-based Polyurethane)	Shore A70
	E-AXFL	E-CXFL		Shore A50
	E-AXFY	E-CXFY		Shore A30
	E-AXHHF	E-CXHHF	Heat-resistant urethane	Shore A90	(4) Brown
	E-AEXHF	E-CXEHF	Wear-resistant urethane	Shore A90	(6) Dark Brown
	E-AEXMF	E-CXEMF		Shore A70
Precision	E-AAFS	E-CAFS	Standard urethane	Shore A95	(1) Natural color or black
	E-AAFH	E-CAFH	(Ether type urethane)	Shore A90
	E-AAFM	E-CAFM	Standard urethane	Shore A70
			(Ester-based Polyurethane)

Polyurethane will yellow over time, but its properties will not change.
For details on various polyurethane characteristics, please click here.

■ Polyurethane Shock Absorbing Material Color Chart

Natural	Black	Brown		Dark Brown

Polyurethane is subject to color variation; the above colors are for reference only.

Part Number						Can be specified down to 1 mm increments			Selection
Type						D	L	V (Only perforated type can be specified)	C (Only standard polyurethane can be specified)
Standard Grade						6 to 30	10 to 200	2 to 26 When D ≥ 16, V ≥ 4	N (Natural) B (black)
With Hole Type	No Hole Type
E-AXFS	E-CXFS	(	Standard urethane (ether type urethane)	Shore A95	)
E-AXFH	E-CXFH	(		Shore A90	)
E-AXFM	E-CXFM	(	Standard Polyurethane (Ester-based Polyurethane)	Shore A70	)
E-AXFL	E-CXFL	(		Shore A50	)
E-AXFY	E-CXFY	(		Shore A30	)
AXHHF	E-CXHHF	(	Heat-resistant urethane	Shore A90	)
E-AEXHF	E-CXEHF	(	Wear-resistant urethane	Shore A90	)
E-AEXMF	E-CXEMF	(		Shore A70	)
Precision
With Hole Type	No Hole Type
E-AAFS	E-CAFS	(	Standard urethane (ether type urethane)	Shore A95	)
E-AAFH	E-CAFH	(		Shore A90	)
E-AAFM	E-CAFM	(	Standard Polyurethane (Ester-based Polyurethane)	Shore A70	)

For the type with holes, the wall thickness (D-V)/2 may be limited depending on the L dimension. Please refer to the specification table for details. When it is V2, L ≤ 50.
When D=6, L ≤ 50

Feature 1: Compared to rubber, polyurethane offers a wider range of hardness options, is softer and more elastic, and also has a certain degree of airtightness.
Feature 2: Urethane has excellent mechanical strength and is more widely used to prevent scars and cracks when brittle objects such as glass and acrylic are fastened.
Feature 3: Less likely to transmit vibration and sound.
Feature 4: Polyurethane has low dust generation, and since it does not contain carbon, it is a material that is not prone to color transfer. (*Natural color only)
Feature 5: A wide variety of products are available to suit different operating conditions. For more product category details, please click here

■ Hardness Table

Material	A95	A90	A70	A50	A30
Urethane	●	●	●	●	●
Nitrile Rubber	×	×	●	●	×
Chloroprene	×	×	●	×	×
EPDM Rubber	×	×	●	×	×
Silicone Rubber	×	×	●	●	×
Fluororubber	×	×	●	×	×
Butyl Rubber	×	×	●	×	×

(1) About urethane discoloring
Urethane will darken its color by absorbing UV rays or illuminating light. This phenomenon is called yellowing. But it does not affect its physical properties, please fully understand when using it.

New urethane	Yellowed urethane

②Hydrolysis characteristics of urethane
 If urethane is used for a long time in a moist or humid environment, it will be hydrolyzed and deteriorated.
It is recommended to manage the temperature and humidity of the warehouse and operating environment in areas with high humidity to extend the service life of the product.

④Urethane dimension change
Urethane dimension will change with the surrounding temperature, but the amount of change is not large, and it can be restored to its original dimension after a few hours at room temperature.