Brand: NORGREN

Norgren RM/57200/M Stainless Steel Roundline Cylinder

Name: Norgren RM/57200/M Roundline Cylinder – Datasheet & Price Quote
Brand: NORGREN
SKU: RM/57200/M

Description

A stainless steel roundline cylinder for tough environments

The Norgren RM/57200/M is a double-acting roundline cylinder with a stainless steel barrel, a stainless piston rod and a magnetic piston, in bores from 8 to 63 mm. The RM prefix has metric or G port threads; the RT/57200/M version has Rc threads. Norgren states that it saves 20 percent of space compared with the basic length of a corresponding ISO or VDMA cylinder, and that low-friction, long-life seals and a high-strength double-crimped end cap design give a long service life.

The stainless barrel and rod make it suitable for washdown and corrosive areas, such as food, beverage and chemical plant, and for compact installations in small automation, where an ISO 15552 profile cylinder would be too long.

Technical specifications

Parameter	Specification
Operation	Double acting with buffer cushioning; standard magnetic piston
Cylinder bores	8, 10, 12, 16, 20, 25, 32, 40, 50, 63 mm
Operating pressure	1 to 10 bar (14 to 145 psi)
Operating temperature	-5 to +80 degC; air dry enough to avoid ice below +2 degC
Medium	Compressed air, filtered, lubricated or non-lubricated
Barrel	Stainless steel (austenitic)
Piston rod	Stainless steel: austenitic for 8 to 16 mm bore; martensitic for 20 to 63 mm bore
End covers	Aluminium
Wiper and seals	Wiper PUR; seals and O-rings NBR
Standard strokes	10 to 320 mm (series of 10, 25, 40, 50, 80, 100, 125, 160, 200, 250, 320 mm, depending on bore)
Non-standard strokes	Up to 500 mm maximum on request
Port threads	RM/572: M3 to G1/4; RT/572: M3 to Rc1/4

Sizes, thrust and variants

Theoretical thrust at 6 bar is shown below, from the datasheet; allow a margin for friction and load.

Bore (mm)	Port (RM / RT)	Rod (mm)	Rod thread	Thrust out (N)	Thrust in (N)
8	M3	3	M3	30	25.9
10	M5	4	M4	46.8	39.6
12	M5	4	M4	67.8	60
16	M5	6	M6	120	103
20	M6 / Rc1/8	8	M8	188	158
25	M6 / Rc1/8	10	M10 x 1.25	294	247
32	G1/8 / Rc1/8	12	M10 x 1.25	482	414
40	G1/8 / Rc1/8	14	M12 x 1.25	754	661
50	G1/4 / Rc1/4	16	M12 x 1.25	1178	1057
63	G1/4 / Rc1/4	20	M16 x 1.5	1870	1680

The variants are R./57200/M standard (integral eye mounting for bores 50 and 63), /MC central rear port, /MF flat rear cover and /JM double-ended piston rod (bores 16 to 63). In the option selector, the RT or RM prefix comes from the port thread, then the cylinder bore code and the stroke up to 500 mm.

Air consumption at 6 bar runs from 0.004 l per cm of outstroke on the 8 mm bore up to 0.218 l per cm on the 63 mm bore, which helps size the valve and the tubing for small cylinders. The barrel is austenitic stainless steel on all bores, while the piston rod is austenitic on bores 8 to 16 mm and martensitic on 20 to 63 mm, a point to check where chemical resistance of the rod itself matters. Dry, filtered air avoids ice below +2 degC.

What to confirm before ordering

State bore, stroke, thread type (RM metric or G, or RT Rc), variant, rod end and mounting, and check that the 10 bar and +80 degC limits suit the duty; these are lower than the 16 bar of ISO profile cylinders. For a larger ISO profile cylinder see the Norgren PRA/802000/M, and more units are under pneumatic cylinders.

Documents and quotation

The attached Norgren datasheet for RT/57200/M and RM/57200/M (document en 1.5.041, edition 07/26) holds the variant table, option selector, dimensions and mounting details. Send the bore, stroke, thread type, variant and quantity for a quotation.

Datasheets & Documents

Datasheet Norgren RT/57200/M and RM/57200/M roundline cylinder datasheet (en 1.5.041, 07/26) Download

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About brand

Compressed air is Norgren territory. The brand dates from 1925 and is found on machine pneumatics and on the instrument air side of process plants: filters and regulators ahead of the valve, solenoid valves that pilot the actuator, and the cylinders that do the work.

Seven Star LLC lists Norgren solenoid valves, air preparation units and pneumatic actuation items and supplies them to maintenance teams in Oman by the exact part number on the old component.

Norgren product families on this page

Air preparation is represented by the Excelon line, here the B74G-6AK-AD1-RMN filter regulator with 3/4 inch ports. Among directional valves the page lists the V51B517A-A2000, a 5/2 way pneumatic solenoid valve, and the Herion 2636 (26360 series) solenoid valve; Herion is an older name that still appears on many nameplates in process plants. Also listed are the 85750 solenoid actuated shut-off valve and ISO 15552 and roundline pneumatic cylinders.

Where Norgren components are used

Filter regulators condition instrument air for control valve positioners and on-off valve actuators. Solenoid valves of the Herion type pilot pneumatic actuators on shutdown and process valves in oil and gas, chemical and power plants. The V-series valves and cylinders belong to packaging machines, material handling and general factory automation, in the GCC as anywhere else.

Ordering Norgren parts: what we need

Norgren part numbers are long and every character counts. In a code such as B74G-6AK-AD1-RMN the blocks set the port size and thread, the drain type, the filter element, the bowl and the regulator spring. Send the complete number, or a photo of the label. For solenoid valves add the coil voltage and frequency, the port thread, the hazardous area protection required and the ambient temperature. For cylinders give the bore, stroke and mounting style.

Browse NORGREN products by category: Solenoid Valve, Regulators, Valve Actuator.