IMI Norgren PM/31091 Air Bellow - 9-1/4in Diameter
Part Number: PM/31091
Quick Summary
IMI Norgren PM/31091 Air Bellow delivers reliable single-acting actuation for high-force automation tasks. It minimizes downtime by providing frictionless operation with no routine lubrication and low maintenance requirements, ideal for short-stroke, high-load cycles. The unit combines an aluminum body with non-magnetic construction and is manufactured in Germany, reflecting rigorous European engineering standards. Designed for rugged environments, it tolerates temperatures from -30 to 50°C and handles air pressures up to 8 bar. Its compact installation and standard G3/4 porting simplify integration in new lines and retrofit projects, delivering predictable performance and reduced ownership costs for OEMs and end users alike.
Product Information
Extended Description
PM/31091 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
9-1/4"
Number Of Convolutions
1
Stroke Length
105 mm, 4"
Operation
Single acting
Magnetic/Non-magnetic
Non-magnetic
Theoretical Force
19600 N
Materials - Body
Aluminium
Dimensions - Height
225 mm
Dimensions - Length
55 mm
Dimensions - Width
225 mm
Weight
2.3 kg
Country of Origin
Germany
Range
PM/31000
Brand
IMI Norgren
Feature: The PM/31091 delivers a theoretical force of 19600 N with a 105 mm stroke, enabling heavy clamping and forming tasks within a compact footprint. Business impact: This high-load capability reduces cycle times and minimizes the need for multiple actuators on the same workstation, boosting line throughput and reliability. Application: Ideal for press feeds, fixture locking, and tooling applications in automation lines where space is at a premium and precise force control is essential. Feature: Aluminum body with non-magnetic construction delivers durability and repeatable performance in vibration-prone environments. Business impact: The corrosion-resistant housing improves long-term reliability, lowers maintenance costs, and extends service intervals in harsh manufacturing cells. Application: Suitable for environments with magnetic interference or where nearby sensors demand non-magnetic components. Feature: Broad operating envelope with 0-8 bar (0-116 psi) and -30 to 50 °C operating temperature. Business impact: This versatility supports deployment across automotive, packaging, and process lines without a proliferation of specialist components. Application: Works with standard compressed-air networks and existing control logic, simplifying stocking and maintenance. Feature: G3/4 port size and 9-1/4" nominal diameter ensure compatibility with common pneumatic manifolds and control valves. Business impact: Quick integration reduces installation labor, accelerates project timelines, and allows standardization across multiple lines. Application: Ideal for OEMs implementing modular cells and retrofit projects. Feature: Single-acting operation with frictionless action and no lubrication requirement. Business impact: Minimizes maintenance and lubricant disposal while delivering consistent response under vibration. Application: Well-suited for clamping and actuating end-effectors where rapid, clean actuation is required. Feature: German-origin engineering and aluminum construction reflect IMI Norgren's commitment to precision and quality. Business impact: Strengthens supplier confidence and ensures compatibility with OEM quality standards, supporting ROI through reduced warranty exposure.
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FAQs
PM/31091 features a G3/4 port size, a 9-1/4" nominal diameter, and standard pneumatic interfaces. For installation, ensure a compatible manifold or mounting plate that accommodates a single-acting cylinder with these port and bore specifications to guarantee proper stroke alignment and sealing integrity.
It operates from 0 to 8 bar (0 to 116 psi) and tolerates temperatures from -30 to 50 °C (-22 to 122 °F). This wide envelope supports deployment across automotive, packaging, and process lines without needing bespoke actuation hardware.
Yes. The design emphasizes frictionless operation and vibration isolation with a non-magnetic aluminum body, delivering stable performance in environments with mechanical or electrical noise and frequent vibration.
Certification details such as CE, SIL, or IP ratings are not specified in the provided data. Please consult the datasheet or contact the supplier to confirm regulatory compliance for your region and application.
The unit is described as requiring no maintenance or lubrication, with frictionless operation. This translates to lower maintenance labor, reduced lubricant disposal, and predictable lifecycle costs, contributing to a lower total cost of ownership over the system’s life.