NorgrenPRA/182040/M/50Profile Pneumatic Cylinder, ISO 15552, 40 mm Bore, 50 mm Stroke, Double-Acting, Magnetic Piston, Adjustable Cushioning

Product Description

What this part is

Norgren PRA/182040/M/50, a double-acting profile pneumatic cylinder to ISO 15552. Bore: 40 mm. Stroke: 50 mm. Piston Rod Diameter: 16 mm. Piston Rod Thread: M12 x 1.25. Port Size: G1/4. Operating Pressure: 1 to 16 bar (14 to 232 psi). Cushioning: pneumatic, adjustable at both ends. Piston: magnetic. Product Weight: 0.96 kg. Body Length at 50 mm Stroke: 155 mm.

Decoding the designation

PRA — Norgren’s ISO 15552 profile-barrel cylinder range, double-acting with adjustable end cushioning.

182 — the 182000 series within that range.

040 — bore diameter in millimetres.

M — magnetic piston, so the stroke ends can be picked up by reed or solid-state switches sitting in the profile grooves.

50 — stroke in millimetres.

What these specs mean in practice

Theoretical Thrust at 6 bar, Outstroke: 754 N. Theoretical Thrust at 6 bar, Instroke: 633 N. The 16 mm rod takes roughly 16 % of the piston area out of the return side, which is the whole of that difference.

Air Consumption at 6 bar, Outstroke: 0.088 litres per centimetre of travel. Air Consumption at 6 bar, Instroke: 0.074 litres per centimetre. Over a 50 mm stroke that is about 0.44 litres out and 0.37 litres back per cycle at 6 bar.

Cushion Length: 22 mm. Initial Cushion Volume: 20.7 cm³. Cushioning is set by a screw at each end cap, so the deceleration can be tuned to the load rather than fixed at build.

Operating Pressure: 1 to 16 bar. The 16 bar ceiling is well above the 10 bar common to lighter ISO cylinders, which is what makes the PRA usable on high-force clamping and press work at the same bore.

Operating Temperature: −20 to +80 °C. Medium: compressed air, filtered, lubricated or non-lubricated.

Material, Profile Barrel: anodised aluminium. Material, End Covers: pressure die-cast aluminium. Material, Piston Rod: martensitic stainless steel. Material, Piston Rod Seals and Piston Seals: polyurethane. Material, O-Rings: NBR. Polyurethane seals are the reason a PRA runs at low breakaway friction and holds it over a long service life.

Conforms to Standard: ISO 15552, and to the superseded ISO 6431, VDMA 24562 and NFE 49-003-1 to which the same envelope was built.

Mounting data

Body Length at 0 mm Stroke: 105 mm. Rod Extension Beyond the Bearing Cap: 30 mm. Piston Rod Thread Length: 24 mm. Across Flats on the Rod: 13 mm. End Cap Width: 53 mm. Tie-Rod Thread: M6. Cushion Screw Head: 6 mm. Mounting Hole Centre Distance on the End Cap: 38 mm.

Matching ISO 15552 mountings for the 40 mm bore: foot bracket QA/8040/21, front flange QA/8040/22, rear clevis QA/8040/23, rear eye QA/8040/27, detachable trunnion QA/8040/34, adjustable trunnion PQA/182040/40, rod clevis QM/8040/25, universal rod eye QM/8040/32, universal rear eye QA/8040/33, and stud mounting QM/8032/35. Service kit: QA/8040/00.

Switch mounting: M/50 series reed and solid-state switches sit flush in the profile grooves. Reed types run 10 to 240 V AC or 10 to 170 V DC at 180 mA maximum, IP66. Solid-state PNP and NPN types run 10 to 30 V DC at 150 mA maximum, IP67.

Quantity and configuration

Unit Quantity: 1 Pc. Cylinder only.

Interchange guidance

PRA/182040/50 is the same cylinder with a non-magnetic piston, so it shares every mounting dimension and every force figure but will not trigger a groove switch. PRA/182040/MW/50 drops the adjustable cushioning. PRA/182040/X2/50 is the low-friction execution, restricted to 1 to 10 bar and recommended on filtered non-lubricated air. Any ISO 15552 40 mm cylinder matches on the mounting interface, G1/4 ports, 16 mm rod and M12 x 1.25 rod thread, so the deciding differences against another maker are the 16 bar rating, the polyurethane seal set and the flush groove switches.