YI-1S3-011 Enidine Sleeve Type Imperial Air Spring

The Enidine YI-1S3-011 is a sleeve type imperial air spring.

Enidine air springs are used for actuation and vibration isolation. As actuators they provide linear or angular motion; as isolators they reduce the effects of vibration, and they can isolate vibration and regulate load height at the same time. Enidine states they accept air, water, nitrogen or anti-freeze as the actuation medium.

Specifications:

Manufacturer:	Enidine
Model:	YI-1S3-011
Enidine part number:	YI1S3011
Series:	Air Spring
Type:	Sleeve Type Imperial Air Spring
Max. stroke:	4.40 in
Force @ 100 psi at 1.0 in stroke:	400 lbs
Force @ 100 psi at 3.0 in stroke:	400 lbs
Force @ 100 psi at maximum stroke:	110 lbs
Isolator load range @ 100 psi:	350 – 400 lbs
Design height range (isolator):	5.0 – 6.0 in
Approx. system natural frequency:	2.00 Hz
Isolation at 7.25 Hz input frequency:	92%
Isolation at 14.5 Hz input frequency:	97%
Isolation at 30 Hz input frequency:	99%
Max. diameter @ 100 psi:	3.25 in
Compressed height:	3.60 in
Max. height:	8.00 in
Upper end plate diameter (A):	2.75 in
Lower end plate diameter (B):	2.75 in
Blind tap for mounting (D):	1/2-13 UNC x 0.63 DP.
End retainer style:	1
Air fitting port (NPTF):	1/8
Combination stud / air fitting port external thread:	3/4-16 UNF x 5/8"
Internal bumper:	No
Flex member material:	Neoprene

• All catalog performance data is based on 100 psi maximum operating pressure. For product selection at pressures less than 100 psi, refer to the manual selection procedure in the catalog, the E.A.S. sizing software, or contact Enidine.
• Listed strokes start from the minimum allowable height of the Air Spring.
• To obtain the lower load range limit (i.e., minimum load @ 20 psi), divide the smaller value by 5.
• In the "Isolation Specification" section, this data reflects the approximate percentage of isolation obtainable, if the design height is at the center of the design height range, and the load per air spring is within the isolator load range. Note: For values other than 100 psi, consult factory.

Source: Enidine 2026 price list; specifications from the Enidine air spring catalogue (imperial sleeve selection chart, printed pages 16-17); enidine.com, Air Springs.