Norgren RM/950/320 Pneumatic Cylinder - 5\" Bore, Double Acting
Part Number: RM/950/320
Quick Summary
The Norgren RM/950/320 pneumatic cylinder delivers precise linear motion for automation in manufacturing and packaging. Users often contend with insufficient cushioning, limited mounting versatility, and variability in performance on large-bore cylinders. Designed to meet common CE safety expectations and to accommodate a wide range of mounting configurations, its adjustable cushioning helps protect equipment in harsh environments. With a 5\" bore and 320 mm stroke, it supports high-load handling while simplifying maintenance across RM/900 family installations, delivering reliable uptime and predictable performance for capital-intensive lines.
Product Information
Extended Description
RM/950/320 Norgren: Large range of bore sizes – ideal for a wide variety of industrial applications | Long established design – proven ruggedness and reliability | Extensive choice of mountings | Adjustable cushioning
Medium
Compressed air
Operating Temperature
-20 ... 80 °C, -4 ... 176 °F
Operating Pressure
2 ... 10 bar, 29 ... 145 psi
Port Size
G1/2
Cylinder diameter
5"
Stroke Length
320 mm
Operation
Double acting
Cushioning
Adjustable cushioning
Magnetic/Non-magnetic
Non-magnetic
Theoretical Force
7600 N
Materials - Barrel
Anodised aluminium
Materials - Piston Rod
Stainless steel (martensitic)
Range
RM/900
Series
Martonair
Brand
IMI Norgren
QM/950/00
Service kits for RM/900, 5"
Feature: 5 inch bore provides up to 7600 N theoretical force, enabling high-load actuation with minimal deflection. Business Impact: improves cycle consistency and reduces part misalignment, lowering reject rates. Application: material handling, stamping, and transfer systems in manufacturing and packaging lines. Feature: Double acting operation ensures bidirectional actuation independent of gravity. Business Impact: delivers consistent speeds and force in any orientation, reducing gravity-related design constraints. Application: palletizing, pick-and-place, and machine tending tasks across automotive and logistics environments. Feature: Adjustable cushioning to limit impact and vibration. Business Impact: extends service life, lowers maintenance frequency, and reduces noise. Application: high-speed cycles in assembly lines and transfer modules. Feature: Non-magnetic piston rod and anodised aluminium barrel for corrosion resistance. Business Impact: reliable performance in harsh environments with minimal magnetic interference near sensors. Application: electronics assembly, automated packaging, and manufacturing environments with sensitive equipment. Feature: Port size G1/2 and operating pressure 2–10 bar enable easy integration with standard plant air systems. Business Impact: flexible piping options and quick retrofit capability, reducing installation time. Application: retrofit projects and new line implementations across general industry. Feature: RM/900 range compatibility and Martonair series design provide consistent mounting patterns and access to service kits. Business Impact: simplifies maintenance planning and spare-part inventories, lowering total cost of ownership. Application: OEM automation cells and multi-axis systems requiring standardized components.
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FAQs
When planning installation, ensure the mounting pattern aligns with the RM/900 family standard and use compatible brackets for tie-rod cylinders. Verify the G1/2 porting is oriented to suit your line layout and provide clean, dry compressed air at 2–10 bar. Consider space for the 320 mm stroke and allow clearance for cushioning adjustment during setup.
Adjustable cushioning lets you tailor impact absorption to your cycle rate and load. Properly tuned cushioning reduces shock, minimizes wear on end stops, and lowers vibration transmission, which translates to longer seal life, reduced maintenance, and more stable cycle times in high-speed automation.
Yes. The 5 inch bore delivers up to 7600 N theoretical force, supporting heavy loads, while the stroke length of 320 mm accommodates extended cycles. For high-speed lines, optimize cushioning to balance rapid cycles with controlled deceleration, ensuring reliable repeatability without compromising component longevity.
Operate within -20 to 80 °C and 2 to 10 bar (29 to 145 psi). Ensure clean, dry compressed air and proper lubrication per your system requirements. The stainless steel piston rod and anodised aluminium barrel are designed for rugged industrial environments, but regular maintenance checks and seal replacement intervals keep performance consistent.
For preventive maintenance, reference QM/950/00 service kits designed for RM/900, 5" cylinders. Establish a spare-parts strategy covering seals, cushioning components, and mounting hardware. Routine inspection of cushions, end-caps, and ports helps prevent unexpected downtime and supports longer service intervals across your automation cells.