Airtac SAID40 Double Rod Cylinder SAID40X55S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X55S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 55mm 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
- Stroke55 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X55S
The AirTAC SAID40X55-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and a 55mm non-standard stroke. Because a carbon steel rod exits both end covers, the effective piston area is identical in both directions, yielding an equal push and pull force of 528N at 0.5MPa. The integrated -S magnet enables position tracking via CMSE reed or DMSE electronic sensors.
This through-rod design allows engineers to mount the primary workpiece on one end and a secondary cam, position flag, or guidance mechanism on the rear rod. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement, and the adjustable air cushions at both ends decelerate the piston smoothly without acting as a lock.
Airtac SAID40 Double Rod Cylinder SAID40X55S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X55S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 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 SAID40X55S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×55 | 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 SAID40X55S Is Used
Symmetric Force Transfer
Drives shuttle mechanisms where identical extend and retract speeds are critical for maintaining cycle timing without tuning flow controls separately.
Anti-Rotation Slides
The twin-rod geometry prevents the load from twisting during vertical or horizontal translation, ensuring precise linear guidance without external rails.
Dual-Side Actuation
Mounts the primary tool on the front rod and a secondary cam or position flag on the rear rod to trigger external mechanical switches or sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40X55S the Right Cylinder?
Choose this specific 40mm bore when an application demands perfectly symmetric force and speed both ways, requiring 528N at 0.5MPa. If you need higher thrust, stepping up to the 50mm bore provides 825N, while dropping to a 32mm bore offers 345N. The 55mm stroke is a non-standard made-to-order length, ensuring exact fit for specialized machine spacing.
Select a double-rod SAID over a single-rod SAI when your mechanism requires dual-side guidance, anti-rotation resistance, or rear-rod actuation. Note that this cylinder does not hold position if air pressure is lost; use a SAIL or BSAID cylinder for locking requirements. It is dimensionally interchangeable per ISO 15552 and uses the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR.
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 SAID40X55S FAQ
Because the rod occupies both sides of the piston, the effective area is equal in both directions. The output force is 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa for both extend and retract strokes.
Yes, it is dimensionally interchangeable with ISO 15552 profile cylinders. It uses PT tapered ports and supports AirTAC CMSE and DMSE sensors via the -S magnet. The mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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