Norgren RM/91040/M/25 Single Acting Cylinder - Magnetic
Part Number: RM/91040/M/25
Quick Summary
Norgren RM/91040/M/25 is a compact single-acting pneumatic cylinder designed for space-limited actuation in automation lines. Engineers often confront limited stroke, higher friction seals, and corrosion risk in small-form actuators, which can throttle cycle times and increase maintenance. The RM/91040/M/25 family aligns with industry expectations for CE conformity, IP-rated variants, and SIL-safety integration in the broader RM/91000/M range, supporting robust qualification processes. Its magnetic piston and non-corrodible construction deliver reliable performance, while the 40 mm bore and 25 mm stroke enable efficient integration with standard 6 mm tubing and G1/8 ports. This combination offers a practical balance of compact form, durability, and cost-effective installation for industrial automation projects.
Product Information
Extended Description
RM/91040/M/25 Norgren: One third the basic length of a corresponding ISO/VDMA model | Low friction, long life seal design | Fully non-corrodible specification | Standard magnetic piston
Medium
Compressed air
Operating Temperature
-5 ... 80 °C, 23 ... 176 °F
Operating Pressure
2 ... 10 bar, 29 ... 145 psi
Port Size
G1/8
Cylinder diameter
40 mm
Stroke Length
25 mm
Operation
Single acting
Cushioning
No cushioning
Magnetic/Non-magnetic
Magnetic
Theoretical Force
687 N
Materials - Barrel
Anodised aluminium alloy
Materials - Piston Rod
Stainless steel (austenitic)
Range
RM/91000/M
Brand
IMI Norgren
C0L510618
Pneufit C Push-in fitting, Banjo flow control, In, 6mm, G1/8
C02250618
Pneufit C Push-in fitting, Adaptor, Straight, External/Internal hex, 6mm, G1/8
C02470618
Pneufit C Push-in fitting, Adaptor, 90° Swivel elbow, 6mm, G1/8
QM/90040/22
BG - Front / Rear Flange Mounting 40mm bore
QM/90040/21
C - Foot Mounting 40mm bore
M/P1501/60
Nut style N2
QM/57020/25
F - Piston Rod Clevis Mounting 20mm bore
M/P1710/22
Stud or Adaptor mounting for attaching F mounting to female piston rod thread for RM/92000/M and RM/91000/M cylinders
M/P72487B
Switch bracket for M/50 switches for actuators RM/91000/M, RM/92000/M and M/60100/M
M/50/LSU/5V
M/50 magnetically operated reed switch, 5m cable
PA2-0006100
Polyamide tube, Natural, 100m, 6mm/4mm
PA2-0006025C
Polyamide tube, Natural, 25m, 6mm/4mm
M/3314
Tube cutter
Feature: Compact 40 mm cylinder diameter combined with a 25 mm stroke. Business impact: Enables space-saving actuator placement in densely packed equipment, reducing overall machine footprint and permitting closer component spacing. Application: Packaging lines and pick-and-place cells where headroom is at a premium, and fast cycle times are essential. Long-tail keywords: 40 mm bore pneumatic cylinder, compact actuator, space-saving cylinder. Feature: Magnetic piston and stainless steel piston rod with anodised aluminium barrel. Business impact: Improves fail-safe position sensing and corrosion resistance, lowering maintenance cycles and replacement costs. Application: Harsh or humid environments, hygiene-conscious assembly, and clean-in-place workflows. Long-tail keywords: magnetic piston cylinder, stainless steel piston rod, non-corrodible cylinder.
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FAQs
The RM/91040/M/25 supports common mounting and fittings within the Norgren RM family. Use BG front/rear flange mounting (QM/90040/22) or the C-foot mounting (QM/90040/21) for quick alignment. Piston rod clevis and stud/adaptor mounts are available (e.g., QM/57020/25, M/P1710/22). For tubing, employ Pneufit C push-in fittings and 6 mm tubing with G1/8 ports to minimize installation time and improve leak integrity.
The RM/91040/M/25 delivers a theoretical force of 687 N. It operates on compressed air (medium) from 2 to 10 bar and withstands temperatures from -5 to 80 °C (23 to 176 °F). The port size is G1/8, with a 40 mm bore and 25 mm stroke, suitable for compact actuation tasks without external cushioning.
Yes, its compact form factor and magnetic piston enable reliable bare-cylinder actuation in tight packaging cells. For high-speed cycles, consider pairing with external speed control or cushioning solutions since this model has no built-in cushioning. The broad mounting options and standard Pneufit C fittings simplify integration into existing packaging platforms.
This cylinder aligns with industry expectations for CE conformity and general industrial safety practices. While the datasheet emphasizes rugged construction and compatibility within the RM/91000/M range, check your specific model variant for IP protection ratings and SIL safety integration during procurement to ensure your exact application meets regulatory requirements.
The RM/91040/M/25 uses low-friction, long-life seals and a non-corrodible design, reducing downtime and maintenance scheduling. The magnetic piston provides reliable sensing with standard reed-switch options. Combined with durable aluminium barrel and stainless rod, this yields lower lifecycle costs, fewer part replacements, and a quicker payback in automation projects.