Norgren RM/980/370 Pneumatic Cylinder - Double Acting with Adjustable Cushioning
Part Number: RM/980/370
Quick Summary
Norgren RM/980/370 pneumatic cylinder provides robust linear actuation for long-throw automation in manufacturing. Engineers often struggle with durability, misalignment, and unpredictable cushioning that disrupt cycle times. Designed for demanding environments, verify CE conformity and IP-rated variants and assess SIL considerations where safety interlocks are used. This model combines an anodised aluminium barrel, martensitic stainless steel piston rod, and adjustable cushioning to deliver consistent stroke control. With an 8" bore and 370 mm stroke, it supports high theoretical force while remaining compatible with common auxiliary components, fittings, and mounting arrangements. The result is improved uptime, predictable actuation, and reduced maintenance across assembly lines, pressrooms, and automated handling systems.
Product Information
Extended Description
RM/980/370 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
370 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"
Feature: 8 inch bore and 370 mm stroke enable substantial load handling and longer travel without reconfiguration. Business impact: higher throughput and fewer cycle stops when moving parts across fixtures. Application: machine tending and material handling systems requiring long-stroke actuation. Feature: Tie-rod double-acting configuration provides synchronized extension and retraction for balanced operation. Business impact: improved control accuracy and repeatability in automated lines. Application: clamp-and-transfer stations where precise positioning matters. Feature: Adjustable cushioning offers tunable deceleration to minimize impact and wear. Business impact: reduced maintenance costs and longer component life. Application: high-cycle indexers and press feeds. Feature: Non-magnetic construction for compatibility with electronic assemblies and sensor-rich environments. Business impact: EMI/EMC-friendly integration and safer operation near instrumentation. Application: automated assembly cells with proximity sensors. Feature: Materials – Barrel and Piston Rod (anodised aluminium, martensitic stainless steel) deliver corrosion resistance and durability. Business impact: extended service intervals and lower replacement frequency. Application: harsh production floors and wash-down zones. Feature: Extensive mountings and port options (G3/4) simplify installation and retrofit projects. Business impact: reduced downtime during upgrades and easier field integration. Application: retrofit of legacy lines and multi-axes configurations. Feature: Service Kits QM/980/00 provide maintenance support and spare parts for RM/900 family. Business impact: predictable maintenance cycles and lower lifecycle costs. Application: ongoing service planning and inventory management.
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FAQs
The RM/980/370 supports a wide range of mountings designed for tie-rod cylinders, enabling easy alignment with fixtures, grippers, and automated transfer systems. When selecting a mounting, consider stroke length, load direction, and space constraints. The RM/900 family’s mounting compatibility simplifies retrofits, and the QM/980/00 service kits can aid in on-site maintenance during mounting changes.
This cylinder delivers a theoretical force of 19,417 N at full operating pressure. With an 8" bore and 370 mm stroke, you get strong push/pull action suitable for heavy loads in machine tending and clamping applications. Operating pressure ranges from 2 to 10 bar, so force can be adjusted to match load and cycle requirements while maintaining control.
Yes, when paired with adjustable cushioning and proper valve sizing. The double-acting design provides balanced actuation, while the adjustable cushioning reduces impact, extending seal life and reducing vibration. For high-cycle applications, ensure airflow is clean and pressure is stabilized to maintain consistent speeds and repeatability across cycles.
For global deployments, verify CE conformity for European markets and IP ratings where ingress protection is critical in your environment. If safety-related controls are integrated, assess SIL considerations in your control logic. While RM/980/370 is designed for rugged industrial use, confirm applicable certifications with your supplier for your specific installation.
Maintenance is supported by the QM/980/00 service kits designed for RM/900-series products, helping you replace seals, cushions, and wear parts efficiently. Regular inspection of cushion settings, rod seals, and mounting hardware minimizes downtime. Keeping spares on hand speeds service and reduces unplanned stoppages during production ramps.