Cylinder Warehouse
ISO 15552 vs ISO 6432 vs ISO 21287
Cylinder Warehouse is the Dedicated Pneumatic Cylinder Warehouse, built for engineers, buyers and maintenance teams sourcing pneumatic cylinders by part number, brand, bore and stroke.
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ISO 15552, ISO 6432 and ISO 21287 are widely used pneumatic cylinder standards. Each standard relates to a different general cylinder format and installation requirement.
The standards help create dimensional consistency, but they do not mean every cylinder from every manufacturer is identical in every detail.
ISO 15552 pneumatic cylinders
ISO 15552 covers larger general-purpose industrial cylinders commonly produced with profile-body or tie-rod construction.
They are widely used for:
- Industrial automation
- Packaging machinery
- Conveyors
- Production equipment
- Material handling
- Machine building
ISO 15552 cylinders normally offer a broad selection of bore sizes, strokes and mounting accessories.
Browse ISO 15552 cylinders
ISO 6432 pneumatic cylinders
ISO 6432 applies to smaller round-body pneumatic cylinders. These are typically used for lighter movements and compact machinery.
Common duties include:
- Ejecting
- Indexing
- Operating stops
- Light clamping
- Small guards and mechanisms
Browse ISO 6432 cylinders
ISO 21287 pneumatic cylinders
ISO 21287 covers compact pneumatic cylinders designed to provide useful force within a shorter body length.
They are commonly used for:
- Fixtures and jigs
- Restricted machine spaces
- Assembly equipment
- Packaging machinery
- Short clamping or positioning movements
Browse ISO 21287 cylinders
Comparison
| Standard |
General format |
Typical use |
| ISO 15552 |
Profile or tie-rod cylinder |
General industrial automation and machine movement |
| ISO 6432 |
Small roundline cylinder |
Compact machinery and lighter movements |
| ISO 21287 |
Short-body compact cylinder |
Restricted installation spaces and short movements |
Does the same ISO standard guarantee interchangeability?
No. A shared standard can make replacement easier, but the complete product still needs to be checked.
Differences may include:
- Overall length
- Piston rod thread
- Port thread and position
- Cushioning adjustment
- Sensor grooves and compatible sensors
- Seal materials
- Temperature range
- Manufacturer-specific options
Where another brand is proposed, Cylinder Warehouse will identify the proposed manufacturer and explain relevant differences before supply.
