Norgren KM/8021/M/140 Pneumatic Cylinder - ISO 6432
Part Number: KM/8021/M/140
Quick Summary
KM/8021/M/140 is a stainless steel ISO 6432 double-acting pneumatic cylinder for food industry actuation. Users face corrosion and washdown challenges; this design mitigates those risks with high corrosion resistance and suitability for demanding environments. Key alignments include ISO 6432 compatibility, magnetic piston for reliable feedback, and food-industry suitability. With adjustable cushioning and standard mounting provisions, it integrates smoothly into existing lines while delivering predictable, repeatable actuation. Operating across -10 to 80 °C and 1 to 10 bar, it supports reliable performance from processing to packaging. Theoretical force of 188 N and a compact 20 mm bore deliver robust actuation in space-constrained automation projects, helping reduce downtime and maintenance costs.
Product Information
Extended Description
KM/8021/M/140 Norgren: High corrosion and acid resistance | Magnetic piston as standard | Conforms to ISO 6432 | Suitable for applications in the food industry | Buffer or adjustable cushioning | Nose mounting nut and piston rod locknut as standard
Medium
Compressed air
Operating Temperature
-10 ... 80 °C, 14 ... 176 °F
Operating Pressure
1 ... 10 bar, 15 ... 145 psi
Standard
ISO 6432
Port Size
G1/8
Cylinder diameter
20 mm
Stroke Length
140 mm
Operation
Double acting
Cushioning
Adjustable cushioning
Magnetic/Non-magnetic
Magnetic
Theoretical Force
188 N
Materials - Barrel
X5 Cr Ni 18 10 (1.4301: AISI 304)
Materials - Piston Rod
X10 Cr Ni S 18 9 (1.4305: AISI 303)
Country of Origin
Germany
Range
KM/8000/M
Brand
IMI Norgren
The KM/8021/M/140 uses a stainless steel barrel (ISO 6432 format) to deliver exceptional corrosion resistance in washdown environments, improving equipment availability and reducing maintenance frequency. In practice, this translates to longer service life in food processing lines and packaging equipment, with fewer replacements and less downtime from rust-related failures. The magnetic piston provides real-time positional feedback to sensors and controllers, enabling tighter control loops and more accurate end-of-stroke detection without extra wiring or external sensors. Adjustable cushioning protects payloads and downstream components from impact, lowering mechanical wear and extending cycle life in high-speed applications. Its standard G1/8 port and nose mounting nut plus piston rod locknut simplify installation, retrofits, and maintenance, reducing commissioning time and enabling quick integration into existing catalogs. The 20 mm bore and 140 mm stroke strike a balance between compact size and stroke reach, ideal for tight automation footprints while delivering consistent actuation force. This cylinder is designed for environments requiring cleanability and reliability, supporting compliant food-grade actuation alongside rigid process control.
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FAQs
Install using the ISO 6432 footprint with the standard mounting provisions. The unit includes a nose mounting nut and piston rod locknut, which simplifies alignment and secure fixation on fixtures. Use the G1/8 port for air supply and confirm the stroke limit is appropriate for the actuated load. When retrofitting, verify existing bore size and mounting patterns to ensure compatibility with KM/8000/M series components.
Leverage the magnetic piston as a built‑in position sensor to support simple feedback to PLCs or valve manifolds. The standard double-acting design allows forward and reverse actuation tracked by sensor inputs, enabling closed‑loop or semi‑closed‑loop control. Ensure the air supply is clean and regulated within 1–10 bar for consistent force, and consider using a programmable controller with automatic end‑of‑stroke detection for predictable cycling.
Yes. The cylinder is designed for high corrosion resistance and food‑industry compatibility. Its stainless steel components resist acids and cleaning chemicals typical in processing lines, and the unit supports continuous operation under washdown protocols. Confirm that all seals and lubricants are rated for food‑grade use and observe manufacturer recommendations for cleaning agents and cycles.
Operating temperature ranges from -10 to 80 °C with an operating pressure of 1 to 10 bar (15 to 145 psi). Theoretical actuation force is 188 N at the bore diameter, with a 20 mm stroke of 140 mm. These figures translate to reliable, repeatable motion for typical pick-and-place and transfer tasks, while the cushioning helps reduce peak loads during high‑speed cycles.
Routinely inspect mounting hardware and cushioning settings for wear and looseness. The magnetic piston provides consistent feedback with minimal calibration. For extended life, follow clean‑air practices and periodic inspections of the piston rod seal and mounting nuts. If the unit is subject to heavy cycling, schedule periodic checks for play in the rod end and verify that the cushioning is still providing the intended damping.