Design Philosophy

Designed with the flexibility to be re-sized in the field, the FS Series are proven performers in onshore and offshore applications throughout the world.

Available in the following models:

• FS 502, FS 602, FS 702 - 2 Throw Frame
• FS 504, FS 604, FS 704 - 4 Throw Frame
• FS 506, FS 606, FS 706 - 6 Throw Frame

FS Series™ Frame Specifications
	FS 502	FS 504	FS 506	FS 602	FS 604	FS 606	FS 702	FS 704	FS 706
Rated Speed-Max.(RPM)*	1500	1500	1500	1200	1200	1200	1000	1000	1000
Max HP/kW	2400/ 1790	4800/ 3580	7200/ 5370	2400/ 1790	4800/ 3580	7200/ 5370	2400/ 1790	4800/ 3580	7200/ 5370
Number of Throws	2	4	6	2	4	6	2	4	6
Max. Number ofStages	3	4	6	3	4	6	3	4	6
Rod Load - Tension(lb/kg)	57,000/ 25,850	57,000/ 25,850	57,000/ 25,850	57,000/ 25,850	57,000/ 25,850	57,000/ 25,850	57,000/ 25,850	57,000/ 25,850	57,000/ 25,850
Rod Load Compression (lb/kg)	60,000/ 27,216	60,000/ 27,216	60,000/ 27,216	60,000/ 27,216	60,000/ 27,216	60,000/ 27,216	60,000/ 27,216	60,000/ 27,216	60,000/ 27,216
Combined Rod Load(lb/kg)	117,000/ 53,061	117,000/ 53,061	117,000/ 53,061	117,000/ 53,061	117,000/ 53,061	117,000/ 53,061	117,000/ 53,061	117,000/ 53,061	117,000/ 53,061
Stroke (in/mm)	5/127	5/127	5/127	6/152.4	6/152.4	6/152.4	7/177.8	7/177.8	7/177.8
Piston Rod Diameter(in/mm)	2.50/ 63.5	2.50/ 63.5	2.50/ 63.5	2.50/ 63.5	2.50/ 63.5	2.50/ 63.5	2.50/ 63.5	2.50/ 63.5	.50/ 63.5
Crankshaft Material	4140 F.S.	4140 F.S.	4140 F.S.	4140 F.S.	4140 F.S.	4140 F.S.	4140 F.S.	4140 F.S.	4140 F.S.
Connecting RodMaterial	F.S.	F.S.	F.S.	F.S.	F.S.	F.S.	F.S.	F.S.	F.S.
Crankpin & MainBearing Dia. (in/mm)	6.5/ 165.1	6.5/ 165.1	6.5/ 165.1	6.5/ 165.1	6.5/ 165.1	6.5/ 165.1	6.5/ 165.1	6.5/ 165.1	6.5/ 165.1
Crankpin & MainBearings - width (in/mm)	3.25/ 82.5	3.25/ 82.5	3.25/ 82.5	3.25/ 82.5	3.25/ 82.5	3.25/ 82.5	3.25/ 82.5	3.25/ 82.5	3.25/ 82.5
Connecting Rod PinBushing - Dia. (in/mm)	5.25/ 133.4	5.25/ 133.4	5.25/ 133.4	5.25/ 133.4	5.25/ 133.4	5.25/ 133.4	5.25/ 133.4	5.25/ 133.4	5.25/ 133.4
Connecting Rod PinBushing - Length (in/mm)	4.0/ 101.6	4.0/ 101.6	4.0/ 101.6	4.0/ 101.6	4.0/ 101.6	4.0/ 101.6	4.0/ 101.6	4.0/ 101.6	4.0/ 101.6
Unit Length (in/mm)	48/ 1219.2	100/ 2540	147/ 3733.8	48/ 1219.2	100/ 2540	147/ 3733.8	48/ 1219.2	100/ 2540	147/ 3733.8
Unit Width (in/mm)	177/ 4495.8	179.5/ 4559.3	179.5/ 4559.3	177/ 4495.8	179.5/ 4559.3	179.5/ 4559.3	177/ 4495.8	179.5/ 4559.3	179.5/ 4559.3
Unit Weight withcylinders (lb/kg)	14,700/ 6667	34,500/ 15,649	43,300/ 19,640	14,700/ 6667	34,500/ 15,649	43,300/ 19,640	14,700/ 6667	34,500/ 15,649	43,300/ 19,640
Specifications noted here may vary depending upon unitconfiguration. F.S. = Forged Steel. *Some cylinders may require lower speeds.

FS Series Cylinder Combinations
Operation	Material	Bore (in)	MAWP (psig)	Liner	Cooling
Double Acting	F.S.	3.0, 3.25, 3.50,3.75	4700	Yes	Air
Double Acting	F.S.	3.5, 3.75, 4.0,4.25	3600	Yes	Air
Double Acting	F.S.	5.5, 5.75, 6.0,6.25	3600	Yes	Air
Double Acting	D.I.	4.5, 4.75, 5.0,5.25	2500	Yes	Water
Double Acting	D.I.	5.5, 5.75, 6.0,6.25	2200	Yes	Water
Double Acting	D.I.	6.75, 7.0, 7.25,7.5	1800	Yes	Water
Double Acting	D.I.	8.5, 9.0, 9.5	1500	Yes	Water
Double Acting	D.I.	10.0, 10.5, 11.0	1250	Yes	Water
Double Acting	D.I.	12.0, 12.5, 13.0,13.5	800	Yes	Water
Double Acting	D.I.	14.0, 14.5, 15.0	635	Yes	Water
Double Acting	D.I.	15.5, 16.0, 16.5	635	Yes	Water
Double Acting	C.I.	17.0, 17.5, 18.0,18.5	250	Yes	Water
Double Acting	C.I.	19.0, 19.5, 20.0,20.5, 21.0	250	Yes	Water
Double Acting	C.I.	21.5, 22.0, 22.5	250	Yes	Water
Double Acting	C.I.	23.5	250	No	Water
SACE Step	D.I.	12.0, 12.5, 13.0,13.5	800	Yes	Water
SAHE Step	D.I.	6.75, 7.0, 7.25,7.5	1800	Yes	Air
PIPELINE APPLICATIONS
D.I. = Ductile Iron F.S. = Forged Steel C.I. = Cast Iron

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