Airtac SAID40 Double Rod Cylinder SAID40X225S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X225S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 225mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke225 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X225S
The AirTAC SAID40X225-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 225mm stroke. Because a carbon steel rod extends from both end covers, the annulus area is identical on both sides, yielding an equal 528N of thrust and pull force at 0.5 MPa in either direction. The integrated -S magnet pairs directly with CMSE reed and DMSE electronic sensors mounted in the dual-side barrel grooves.
This through-rod architecture provides superior anti-rotation guidance compared to a single-rod SAI, allowing you to mount the primary workpiece on one end and a secondary cam, position flag, or mechanism on the rear rod. It uses adjustable air cushions at both ends to decelerate the piston smoothly, but note it will not hold a load if air pressure is lost.
Airtac SAID40 Double Rod Cylinder SAID40X225S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X225S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAID40 Double Rod Cylinder SAID40X225S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAID40 Double Rod Cylinder SAID40X225S Is Used
Symmetric Force Transfer
Drives a transfer carriage back and forth with identical 528N force and speed in both directions, ensuring consistent cycle times without tuning separate pressure regulators.
Rear-Rod Position Flag
Mounts the primary tool on the front rod while using the rear extension to trip a DMSE solid-state sensor, providing precise end-of-stroke confirmation without external probes.
Anti-Rotation Web Guide
Utilizes the twin-rod guidance to prevent mechanical rotation during vertical web handling, keeping the load perfectly aligned without needing an external linear bearing.
Is the Airtac SAID40 Double Rod Cylinder SAID40X225S the Right Cylinder?
Choose this 40mm bore when an application demands symmetric push/pull dynamics and dual-side guidance, stepping up from the 32mm bore (345N both ways) or down from the 50mm bore (825N both ways). The double-rod design is essential for preventing mechanical twist on long-stroke slides where a single rod would allow rotational play. It features a PT tapered G1/4 port and accepts the reduced SAID mounting accessory set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR brackets used on single-rod SAI models.
Because the stroke is 225mm, you must account for the extended overall length; the rear rod protrudes continuously and requires clear space to avoid collision. Furthermore, for strokes of 300mm or more, the unsupported load increases bending stress on the rod bearings, so an external guide rail is recommended to prevent premature wear.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAID40 Double Rod Cylinder SAID40X225S FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa.
Yes, it is dimensionally interchangeable per ISO 15552 profile cylinder standards. However, it only uses the reduced SAID mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It does not accept FB, CA, CB, or CR brackets.
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