Norgren PM/31082 Air Bellow - 16500 N (8 in Dia)
Part Number: PM/31082
Quick Summary
Norgren PM/31082 Air Bellow provides frictionless, single-acting actuation for high-force pneumatic applications such as clamping, stamping, and forming. This solution helps eliminate lubrication requirements and reduces wear in environments with vibration and compact installation envelopes. In the broader market, CE compliance and IP-rated ruggedization are common expectations, and SIL compatibility is often considered for safety-critical lines; this model uses a non-magnetic aluminium body to support reliable operation. By combining compact installation, high force, and low maintenance, it delivers faster ROI and predictable performance in metal fabrication and pick-and-place fixtures.
Product Information
Extended Description
PM/31082 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
G3/4
Nominal Diameter
8"
Number Of Convolutions
2
Stroke Length
185 mm
Operation
Single acting
Magnetic/Non-magnetic
Non-magnetic
Theoretical Force
16500 N
Materials - Body
Aluminium
Dimensions - Height
220 mm
Dimensions - Length
80 mm
Dimensions - Width
220 mm
Weight
2.3 kg
Country of Origin
Germany
Range
PM/31000
Brand
IMI Norgren
Feature: Single-acting, frictionless operation → Business Impact: Simplified control, reduced maintenance, longer service intervals → Application: High-speed clamping or stamping lines where return motion is required without complex hydraulics. Feature: 8 inch nominal diameter and 185 mm stroke → Business Impact: Substantial force with adequate travel in tight spaces → Application: Forming and assembly fixtures demanding short stroke, high-load actuation. Feature: Aluminium, non-magnetic body → Business Impact: Lightweight, corrosion resistance, minimal magnetic interference → Application: Precision automation near sensors and in clean or vibration-sensitive zones. Feature: Operating pressure 0–8 bar, G3/4 port → Business Impact: Seamless integration with existing pneumatic systems and standard fittings → Application: Retrofit into conveyor lines and press stations without special adapters. Feature: Theoretical 16500 N force → Business Impact: Enables strong clamping and high-force actuation with compact form factor → Application: Metalworking clamps, fixturing, and rigid positioning tasks. Feature: Maintenance-free, no lubrication required → Business Impact: Lower downtime, predictable uptime, lower running costs → Application: High-cycle production environments needing reliability and consistency.
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FAQs
PM/31082 uses a standard G3/4 port and an aluminium body; mount with four fixing holes aligned to the load axis. Use appropriate fittings and thread sealant, verify a clean port, and ensure the stroke aligns with end-of-travel stops. The unit’s compact footprint simplifies retrofits on existing fixtures without extensive rework.
Operating pressure is 0 to 8 bar, and the medium is compressed air. This range supports integration with most plant air systems, enabling reliable high-force actuation while avoiding lubrication requirements in line with maintenance-reduction goals.
Yes. The design emphasizes high vibration isolation thanks to its robust aluminium body and sealed, non-magnetic construction. This helps protect sensors and nearby equipment while maintaining consistent actuation in environments with frequent or intense vibrations.
The actuator features an 8 inch nominal diameter with a 185 mm stroke, overall height around 220 mm, and footprint approximating 220 mm by 80 mm. Weight is about 2.3 kg. These dimensions support straightforward integration into compact fixtures and tooling plates.
The PM/31082 provides frictionless operation with no lubrication requirements, reducing maintenance downtime and parts cost. Combined with its high-force output in a compact form, it enables longer production runs between services and faster changeovers, delivering improved uptime and lower total cost of ownership.