Norgren RM/980/330 Tie Rod Cylinder - 8in Bore Cushioning
Part Number: RM/980/330
Quick Summary
Norgren RM/980/330 Tie Rod Cylinder provides rugged double-acting actuation for industrial automation and material handling. End users commonly struggle with limited bore options, inconsistent cushioning, and downtime caused by maintenance or misalignment. Certification specifics are not listed in the provided data; consult the official datasheet for CE, IP ratings, or SIL applicability to ensure regional compliance. Designed for long service life, this cylinder integrates with a wide range of mountings and control systems. In practice, engineers gain predictable stroke performance and reduced total cost of ownership through adjustable cushioning and non-magnetic construction. The RM/900-series platform supports a broad range of bore sizes and stroke lengths, enabling scalable solutions across multiple lines. Field reliability and retrofit flexibility translate into lower lifecycle costs and smoother integration with existing Norgren components.
Product Information
Extended Description
RM/980/330 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
330 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"
Large bore, long stroke enable high force and extended actuation without compromising package size, delivering a direct improvement in cycle times and throughput for clamp-and-pick operations. This translates to predictable performance under load and reduced risk of short-stroke losses in demanding packaging or material handling lines. The double-acting design provides balanced push/pull forces, improving positioning accuracy and control in automated assembly cells. With an anodised aluminium barrel and martensitic stainless steel piston rod, the unit resists corrosion and wear in harsh environments, reducing maintenance frequency and part replacements. The adjustable cushioning feature supports customized impact control, minimizing system vibration and protecting downstream equipment such as conveyors and tight-tolerance guides. A non-magnetic construction enhances sensor compatibility and reduces magnetic interference in precision positioning tasks. Extensive mounting options and compatibility with RM/900-series accessories simplify installation and future upgrades, lowering installation time and enabling quick reconfiguration for new processes. Service kits QM/980/00 are available to reduce downtime during routine maintenance and seal replacements, boosting uptime and sustaining performance. The device operates from compressed air at 2 to 10 bar (29–145 psi) and tolerates temperatures from -20 to 80 °C (-4 to 176 °F), making it suitable for diverse plant environments. This model is part of IMI Norgren’s Martonair line, reinforcing a legacy of rugged reliability and cross-brand interoperability across pneumatic systems. In practice, engineers benefit from the combination of robust materials, precise cushioning, and a broad ecosystem of compatible components to support compliant, efficient, and safe automation.
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FAQs
The RM/980/330 supports extensive mounting options within the RM/900 family, including common tie-rod, flange, and clevis configurations. For best results, select mounting brackets and end caps compatible with the 8 inch bore and 330 mm stroke, and verify porting (G3/4) for reliable air supply. When retrofitting, ensure alignment with existing control valves and consider available service kits to simplify maintenance.
Operating pressure range is 2 to 10 bar (29 to 145 psi). Operating temperatures span -20 to 80 °C (-4 to 176 °F). These ranges support a wide variety of industrial environments, but always confirm compatibility with your compressed air quality, lubrication requirements, and sensor proximity to maintain performance and longevity.
Adjustable cushioning allows you to tailor impact and deceleration to match load weight and cycle speed, reducing shock, wear, and vibration. This extends rod and seal life, minimizes belt and guide wear, and improves positional accuracy during high-speed cycles. It also lowers downstream downtime by reducing unexpected stoppages from component fatigue or misalignment.
Yes. Service kits QM/980/00 cover RM/900 series 8" cylinders and related wear components, including seals and cushions. Using OEM service kits helps ensure correct fit, material compatibility, and faster maintenance cycles, contributing to reduced downtime and more predictable maintenance windows.
Best suited for heavy-duty automation, material handling, clamping, and press-like operations where high force and long stroke are required. The 8 inch bore provides substantial theoretical force (around 19.4 kN), while adjustable cushioning protects adjacent equipment and supports longer service life in demanding lines. It integrates well with a broad ecosystem of mounting and control options for scalable, reliable pneumatic actuation.