YI-FS 1330-11-197 Enidine Single Bellows Imperial Air Spring

The Enidine YI-FS 1330-11-197 is a single bellows 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-FS 1330-11-197
Enidine part number:	YIFS133011197
Series:	Air Spring
Type:	Single Bellows Imperial Air Spring
Supplied as:	Bellows with bead rings, 1 7/8 bolts, nuts and washers
Rubber bellows only (replacement) part number:	YR-FS 1330-11-135
Maximum diameter:	20.9 in
Installation space needed (diameter):	22.45 in
Mounting bolts:	24 x 3/8-24 UNF
Bolt torque (service instruction):	3/8-24 UNF = 28-32 FT-LBS
Maximum height (Hmax):	6.5 in
Minimum height (Hmin):	2.0 in
Height limit:	Use in dotted range > 5.7 in only after consultation with Enidine
Min. pressure:	0 psi
Return force to min. height:	≤ 20 lbs
Overall weight with bead rings, bolts, nuts and washers:	16.1 lbs
Vibration isolation design height H:	recommended 5.0 in, minimum 4.1 in
Vibration isolation volume V:	1114 in³
Vibration isolation force (load) at 40 / 60 / 80 / 100 / 120 psi:	8040 / 12060 / 16080 / 20100 / 24120 lbs
Vibration isolation spring rate at 40 / 60 / 80 / 100 / 120 psi:	4268 / 6218 / 8025 / 9932 / 11722 lbs/in
Vibration isolation natural frequency at 40 / 60 / 80 / 100 / 120 psi:	2.2 / 2.2 / 2.2 / 2.2 / 2.2 Hz
Static force at height 5.5 in (20 / 40 / 60 / 80 / 100 / 120 psi):	3620 / 7230 / 10850 / 14470 / 18080 / 21700 lbs; Vol. 1224 in³
Static force at height 5 in (20 / 40 / 60 / 80 / 100 / 120 psi):	4020 / 8040 / 12060 / 16080 / 20100 / 24120 lbs; Vol. 1112 in³
Static force at height 4.5 in (20 / 40 / 60 / 80 / 100 / 120 psi):	4370 / 8740 / 13110 / 17480 / 21850 / 26210 lbs; Vol. 994 in³
Static force at height 4 in (20 / 40 / 60 / 80 / 100 / 120 psi):	4720 / 9440 / 14150 / 18870 / 23590 / 28310 lbs; Vol. 871 in³
Static force at height 3.5 in (20 / 40 / 60 / 80 / 100 / 120 psi):	5010 / 10030 / 15040 / 20050 / 25060 / 30080 lbs; Vol. 766 in³
Static force at height 3 in (20 / 40 / 60 / 80 / 100 / 120 psi):	5240 / 10480 / 15720 / 20970 / 26210 / 31450 lbs; Vol. 632 in³

• The maximum operating air pressure is 120 psi (8 bar).

Source: Enidine 2026 price list; specifications from the Enidine air spring catalogue (bead ring style, printed page 21); enidine.com, Air Springs.