Norgren M/31122 Air Bellow - 12" Dia, 225 mm Stroke, 38.5 kN
Part Number: M/31122
Quick Summary
Norgren M/31122 air bellow provides frictionless single-acting actuation for high-force linear motion in tight automation cells. Engineers often battle lubrication, wear, and inconsistent force in pneumatic cylinders, leading to downtime and maintenance costs. Verify certifications on the datasheet for CE conformity, IP ratings for environmental protection, and SIL compatibility to ensure your safety and compliance in regulated environments. This solution pairs rugged reliability with scalable installation, delivering predictable performance across temperature ranges and pressures, supporting faster line changeovers and lower operating costs. For general pneumatic and automation workflows, it aligns well with short-stroke, high-force needs while remaining compatible with common industry standards.
Product Information
Extended Description
M/31122 Norgren: Frictionless operation | No maintenance or lubrication | Ideal for short stroke, high-force applications | High vibration isolation level | Simple to install
Medium
Compressed air
Operating Temperature
-40 ... 70 °C, -40 ... 158 °F
Operating Pressure
0 ... 8 bar, 0 ... 116 psi
Port Size
G1/2
Nominal Diameter
12"
Number Of Convolutions
2
Stroke Length
225 mm
Operation
Single acting
Magnetic/Non-magnetic
Non-magnetic
Theoretical Force
38500 N
Dimensions - Height
200 mm
Dimensions - Length
330 mm
Dimensions - Width
330 mm
Weight
6.2 kg
Country of Origin
Germany
Range
M/31000
Brand
IMI Norgren
Feature: 12 inch nominal diameter air bellow delivers a high theoretical force of 38.5 kN. Business impact: enables rapid, repeatable high-force positioning in short-stroke applications, reducing cycle time and increasing throughput. Application: stamping, clamping, and precision assembly lines where space is constrained and high load is required. Feature: Frictionless operation with no lubrication requirement. Business impact: minimizes maintenance downtime and reduces lubricant-related contamination in cleanroom or food-grade environments. Application: automated pick-and-place, packaging, and precision pressing where cleanliness matters. Feature: Non-magnetic construction. Business impact: minimizes magnetic interference in metrology, CNC setups, and sensor-rich automation zones. Application: high-precision measurement stations and servo-integrated equipment. Feature: Standard G1/2 port size and compact footprint (330 mm length, 330 mm width, 200 mm height). Business impact: simplifies integration with existing manifolds and retrofit projects, lowering installation time and risk. Application: retrofits in existing pneumatic lines and mounting on standard frames. Feature: Broad operating range (-40 to 70 C; 0 to 8 bar). Business impact: ensures reliable performance in harsh environments and high-cycle applications, reducing unexpected shutdowns. Application: factory floors with temperature variability and vibration-heavy machinery. Feature: Documentation and compatibility support via CAD data and datasheets. Business impact: speeds design, procurement, and qualification processes, lowering project risk. Application: engineering design, BOM creation, and supplier validation in automation projects.
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FAQs
M/31122 uses a standard G1/2 port and a compact footprint suitable for mounting on typical automation frames. The nominal diameter is 12 inches with a 225 mm stroke, and the overall dimensions are around 330 x 330 x 200 mm, weight about 6.2 kg. For retrofit projects, verify manifold compatibility and consult the CAD data to ensure proper alignment and mounting hole spacing during installation.
Theoretical force is listed at 38,500 N when operated within the 0–8 bar pressure range. It is a single-acting, frictionless actuator designed for short-stroke, high-load tasks. Performance is influenced by supply pressure, temperature, and the mounting alignment. Use the datasheet for exact force at your operating pressure and consult installation guidelines to ensure safe loading and stroke limits.
Yes, its high-force capability combined with a short stroke makes it well-suited for stamping, clamping, and vibration isolation on automation lines. The non-magnetic construction minimizes interference with nearby sensors, while the 12 inch diameter and 225 mm stroke enable compact, high-load actuation in confined spaces. Always verify process requirements and load profiles to optimize performance.
Certification details should be confirmed on the official datasheet and with the supplier. Look for CE conformity for machinery safety, IP ratings for environmental protection, and SIL compatibility where safety-related control is involved. Always check the datasheet for the model’s certified status and regional compliance before integration into regulated environments.
The design emphasizes maintenance-free operation with no lubrication required, reducing downtime and lubricant replenishment costs. By delivering consistent force across long service intervals and minimizing wear, you can achieve lower lifecycle costs and faster return on investment in high-cycle manufacturing environments. For exact ROI, compare downtime reductions and maintenance labor savings against total cost of ownership.