1. Identify the family and marking
Photograph the cylinder label, body, end caps, ports, rod end, mounting hardware, sensors, and machine documentation. Record the manufacturer, series, bore, stroke, and any suffixes.
pneumatic cylinder replacement
Pneumatic cylinder replacement: what to measure
A pneumatic-cylinder replacement checklist covering bore, stroke, mounting, rod end, ports, cushioning, sensors, pressure, and standards.
Short answer.A pneumatic cylinder replacement needs more than bore and stroke. Record the cylinder family or standard, mounting and accessory dimensions, rod and end connection, ports, cushioning, sensors, pressure, speed, and application load before choosing a substitute.
Work the problem in this order01
2. Record bore, stroke, and rod
Measure or confirm bore, nominal stroke, rod diameter, rod extension, retracted length, and the rod-end thread or attachment. Keep units consistent and distinguish nominal stroke from the machine’s actual travel.
3. Measure mounting and accessory interfaces
Record end mounting type, pin or clevis dimensions, foot or flange pattern, tie-rod or profile dimensions, sensor groove, and available clearance. ISO 15552 covers basic, mounting, and accessory dimensions for a defined metric cylinder series, but the actual product catalog still controls the selection.
4. Capture ports, cushions, and controls
Record port type and size, flow controls, adjustable or fixed cushioning, magnetic piston, proximity sensors, valve arrangement, and tubing or fitting constraints.
5. Verify the duty
Write down working pressure, load direction, speed, cycles, side load, temperature, contamination, corrosion, and required life. Confirm the replacement’s pressure, speed, load, and mounting limits with the manufacturer.
Replacement checks02
✓Cylinder family or standard, bore, stroke, rod diameter, and retracted length
✓Mounting type, pin or clevis dimensions, flange or foot pattern, and clearance
✓Rod-end thread or attachment, ports, tubing, fittings, and flow controls
✓Cushioning, magnetic piston, sensor grooves, switches, and controls
✓Pressure, load, speed, cycles, side load, temperature, environment, and life
Common failure modes03
!Matching bore and stroke while ignoring mounting dimensions
!Assuming every cylinder with the same bore is interchangeable
!Ignoring rod-end geometry, retracted length, ports, or sensor placement
!Treating an ISO family label as proof that every product detail matches
Source-backed starting points04