Norgren RM/980/250 Tie Rod Double Acting Cylinder - Adjustable Cushioning
Part Number: RM/980/250
Quick Summary
Norgren RM/980/250 is a tie rod double-acting pneumatic cylinder built for reliable linear actuation in demanding industrial environments. This unit delivers high force with consistent motion, supporting long production cycles and tight tooling tolerances. Engineers often struggle with maintenance overhead, inconsistent cushioning, and mounting versatility; the RM/980/250 addresses these concerns with adjustable cushioning and a robust construction. The cylinder uses a stainless steel piston rod and an anodised aluminium barrel to resist wear and corrosion. Designed to align with CE readiness and common industrial safety standards, with SIL-capable configurations and IP-rated variants available in suitable configurations. This supports the integration of pneumatic actuation into established automation workflows, delivering predictable performance and reduced downtime.
Product Information
Extended Description
RM/980/250 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
G3/4
Cylinder diameter
8"
Stroke Length
250 mm
Operation
Double acting
Cushioning
Adjustable cushioning
Magnetic/Non-magnetic
Non-magnetic
Theoretical Force
19417 N
Materials - Barrel
Anodised aluminium
Materials - Piston Rod
Stainless steel (martensitic)
Range
RM/900
Series
Martonair
Brand
IMI Norgren
QM/980/00
Service kits for RM/900, 8"
The RM/980/250 combines an 8" bore with a 250 mm stroke to deliver substantial actuation force, enabling reliable movement of heavy tooling and clamping fixtures. Feature → Business Impact → Application: High theoretical force of 19417 N ensures consistent performance under load, reducing cycle times on demanding lines and improving process reliability in press and material handling applications. Feature → Business Impact → Application: Adjustable cushioning minimizes impact and wear, extending cylinder life and reducing maintenance costs in high-cycle environments such as automation cells and transfer lines. Feature → Business Impact → Application: Stainless steel piston rod with an anodised aluminium barrel delivers corrosion resistance and long service life in humid or dusty plants, improving uptime and lowering replacement frequency. Feature → Business Impact → Application: Non-magnetic construction is advantageous in measurement-intensive setups where magnetic interference must be avoided, supporting precise sensor readings and safer integration with precision equipment. Feature → Business Impact → Application: G3/4 port size and wide operating pressure range of 2–10 bar make installation straightforward across existing compressed air systems, enabling quick scoping of new lines. Feature → Business Impact → Application: Extensive mounting options and compatibility with RM/900 series enable flexible installation in retrofits and new builds, reducing downtime during upgrade projects. Feature → Business Impact → Application: Availability of service kits QM/980/00 facilitates rapid maintenance, keeping downtime to a minimum and safeguarding long-term total cost of ownership in serial production environments.
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FAQs
The RM/980/250 is designed to work within the RM/900 family, offering extensive mounting options that simplify retrofits and new installations. Its tie-rod construction and standard porting (G3/4) support common pneumatic fixtures, guiding quick alignment with existing frames, brackets, and end-plate configurations to minimize assembly time and maximize uptime.
Theoretical force is 19417 N, enabling reliable actuation under heavy loads. Adjustable cushioning reduces impact, lowers peak loads on end-of-stroke components, and extends seal and rod life, which translates to reduced maintenance cycles and higher cycle reliability in high-speed or high-load applications.
Yes, with a robust anodised aluminium barrel, martensitic stainless steel piston rod, and a wide operating temperature range (-20 to 80 °C) plus 2–10 bar air pressure, it suits demanding lines. Its non-magnetic option and optional IP-rated configurations further support sensor-integrated automation in challenging plant conditions.
The RM/980/250 is designed to align with CE safety and performance expectations for European installations. For critical safety or regulated environments, confirm SIL-capable configurations and any IP ratings with your supplier or system integrator to ensure full compliance for your specific application and regulatory requirements.
Service is supported by QM/980/00 service kits, enabling quick field maintenance and gasket/seal replacements without major disassembly. Regular, kit-based maintenance reduces downtime and extends component life, delivering lower total cost of ownership and improved return on investment in high-cycle automation environments.