Norgren RM/980/390 Cylinder - 8 in Bore Cushioning
Part Number: RM/980/390
Quick Summary
RM/980/390 pneumatic cylinder delivers high‑capacity linear actuation for heavy automation lines. In practice, engineers often contend with stroke placement, mounting options, and cushioning set points that can impact cycle times and component life. This unit emphasizes rugged reliability with an 8 in bore, 390 mm stroke, adjustable cushioning, and a corrosion‑resistant anodised aluminium barrel paired with a martensitic stainless piston rod. For safety and regulatory alignment, typical considerations include CE marking, IP ratings, and SIL implications that should be verified on the datasheet. By leveraging RM/900 family compatibility and the QM/980/00 service kits, procurement teams gain streamlined spares, easier maintenance, and predictable uptime across diverse manufacturing environments.
Product Information
Extended Description
RM/980/390 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
390 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 → Business Impact → Application: The 8" bore and tie‑rod double‑acting design deliver high force capability (19417 N theoretical) for precise, robust actuation in heavy duty presses, stamping, and material handling, reducing cycle times and improving throughput. Application: high‑duty automation lines. Feature → Business Impact → Application: Adjustable cushioning minimizes impact forces and panel loads, extending actuator life and reducing vibration‑related wear. Application: pick‑and‑place robots and packaging machinery. Feature → Business Impact → Application: Anodised aluminium barrel and martensitic stainless steel piston rod provide corrosion resistance and durability in tough environments, lowering maintenance costs and downtime. Application: food and beverage, chemical processing, and general industrial automation. Feature → Business Impact → Application: G3/4 port and standard RM/900 compatibility simplify installation, retrofit, and integration with existing plant air systems. Application: retrofit projects and modular automation upgrades. Feature → Business Impact → Application: Service kits QM/980/00 and the RM/900 range enable easy maintenance and spare part availability, improving total cost of ownership. Application: plant-wide maintenance programs. Feature → Business Impact → Application: Non‑magnetic construction reduces interference in precision measurement zones, supporting cleans room and metrology applications where magnetic fields must be controlled. Application: electronics assembly and instrumentation lines.
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FAQs
For installation, ensure compatible tie‑rod mounting and correct port alignment to the G3/4 fitting. The 8" bore requires appropriate frame support and tight tolerances on end caps to maintain concentricity. Use the RM/900 series mounting options and verify cushioning settings to minimize impact at stroke endpoints.
Key specs include an 8" cylinder diameter, 390 mm stroke, 2–10 bar operating pressure, and a theoretical force of 19417 N. The medium is compressed air, with a operating temperature range of -20 to 80 °C. The piston rod is stainless steel (martensitic) and the barrel is anodised aluminium, non-magnetic and adjustable cushioning.
Yes. The RM/980/390 is within the RM/900 range and is compatible with QM/980/00 service kits, facilitating straightforward maintenance, part replacement, and lifecycle management across a shared spare parts ecosystem.
Industries with high‑cycle, high‑load pneumatic actuation benefit most, including stamping, packaging, material handling, and automated assembly lines. The 8" bore, adjustable cushioning, and durable materials support reliable performance in harsh environments and demanding duty cycles.
Verify CE marking for European compliance, appropriate IP protection ratings for the installation environment, and SIL considerations if used within safety‑critical systems. Always consult the product datasheet to confirm current certifications and any region‑specific requirements.