Norgren PM/31041 Air Bellow - Single Acting, 4-1/2 Dia
Part Number: PM/31041
Quick Summary
Norgren PM/31041 air bellow delivers frictionless, single-acting actuation for high-force short-stroke needs in automation equipment. Operators struggle with stiction, maintenance, and vibration in compact, space-constrained lines. Certification considerations include CE compliance for European markets, SIL safety integration for pneumatic actuation, and IP-rated housing options for harsh environments. These attributes translate to lower lifecycle costs, reduced downtime, and smoother integration into existing pneumatics and fluid systems, with easy, compact installation for industrial automation lines.
Product Information
Extended Description
PM/31041 Norgren: Frictionless operation | No maintenance or lubrication | Ideal for short stroke, high-force applications | High vibration isolation level | Easy, compact installation
Medium
Compressed air
Operating Temperature
-30 ... 50 °C, -22 ... 122 °F
Operating Pressure
0 ... 8 bar, 0 ... 116 psi
Port Size
G3/8
Nominal Diameter
4-1/2"
Number Of Convolutions
1
Stroke Length
40 mm, 1-1/2"
Operation
Single acting
Magnetic/Non-magnetic
Non-magnetic
Theoretical Force
5500 N
Materials - Body
Aluminium
Dimensions - Height
125 mm
Dimensions - Length
50 mm
Dimensions - Width
125 mm
Weight
0.75 kg
Country of Origin
Germany
Range
PM/31000
Brand
IMI Norgren
The PM/31041 leverages a frictionless bellows design that operates without lubrication, dramatically reducing wear and eliminating oil carryover in sensitive assembly lines. The result is longer service intervals, lower maintenance labor, and cleaner air in compressed-air systems used in packaging and handling equipment. In practice, technicians deploy it where short strokes must generate reliable high force without contaminants, keeping production running smoothly. With a 4-1/2 inch nominal diameter and a theoretical 5500 N, the actuator delivers substantial push in a compact package, enabling faster cycle times and simpler tooling integration. The 40 mm stroke concentrates load and reduces travel requirements, while the G3/8 port simplifies plumbing and minimizes manifold complexity. The aluminium body provides a lightweight, corrosion-resistant solution, with non-magnetic construction that suits magnetic-sensitive equipment. Operating between -30 and 50 C and 0 to 8 bar, it handles demanding factory environments and vibration, delivering repeatable performance with minimal maintenance. This unit’s compact footprint and rigid mounting options support easy installation in PM/31000 family systems, enabling straightforward retrofits and scalable automation. A practical advantage is reduced contamination risk and predictable outcomes in regulated production lines, where reliability and traceability matter for quality control and OEE targets.
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FAQs
Install the PM/31041 by mounting the aluminium body to a stable fixture, connect a clean, dry compressed-air supply to the G3/8 port, and align the 40 mm stroke with the workpiece. Ensure the air supply remains within 0–8 bar and verify the single-acting cycle-return path. Use appropriate mounting hardware and maintain proper clearance for travel.
Key specs include a 4-1/2 inch nominal diameter, a 40 mm stroke, single-acting operation, G3/8 port size, and a theoretical pushing force of 5500 N. Operating temperature ranges from -30 to 50 °C and a working pressure of 0 to 8 bar (0 to 116 psi). The body is aluminium and non-magnetic, contributing to light weight and quick response.
Best suited for short-stroke, high-force tasks in automated lines such as clamping, part presentation, stamping, or fixture actuation. Its compact footprint and non-magnetic aluminium housing make it ideal where space is tight and nearby electronics require minimal magnetic interference. It integrates readily with standard pneumatic manifolds for packaging, assembly, and material handling applications.
Check the datasheet for CE compliance details and any region-specific certifications. While the unit is designed for durable industrial use, verify SIL safety considerations and IP protection levels in your application, especially around harsh environments or safety-critical lines. Always confirm with your supplier that the version ordered meets your regulatory requirements.
The lubrication-free operation minimizes maintenance needs and oil contamination risks, reducing downtime. Its high-force capability in a compact form lowers the actuator count and can speed cycle times, improving throughput. Over the equipment life, fewer servicing events and longer intervals between part replacements translate to a lower total cost of ownership.