Airtac SAID40 Double Rod Cylinder SAID40X140
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X140 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAID40 Double Rod Cylinder SAID40X140
The AirTAC SAID40X140 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 140mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal push and pull force of 528N at 0.5 MPa. This twin-rod architecture provides superior anti-rotation guidance compared to a single-rod SAI.
The extruded aluminum barrel includes sensor grooves on both sides for mounting position switches. The standard carbon steel rod and PT (tapered) G1/4 port ensure robust physical performance. The rear rod end can independently drive a secondary mechanism or carry a limit flag, while adjustable air cushions at both ends decelerate the piston smoothly.
Airtac SAID40 Double Rod Cylinder SAID40X140 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X140 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAID40X140
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SAID40X140 Is Used
Symmetric Force Transfer
Drives a workpiece back and forth with identical 528N force and speed in both directions, ensuring perfectly balanced cycle timing for automated assembly presses.
Anti-Rotation Slides
The twin-rod design prevents the piston plate from twisting under offset loads, providing precise linear guidance for material handling and cutting fixtures.
Rear-Rod Sensing
Mounts a cam or position flag on the protruding rear rod end to trigger external solid-state sensors, keeping the primary work area clear of obstructions.
Is the Airtac SAID40 Double Rod Cylinder SAID40X140 the Right Cylinder?
Choose this 40mm bore when an application requires perfectly symmetric force and speed in both directions, offering 528N at 0.5 MPa. If your mechanism needs less force, the 32mm bore provides 345N both ways; if more thrust is required, step up to the 50mm bore delivering 825N. The double-rod design is specifically selected over a single-rod SAI when the load demands dual-side guidance to prevent rotation, or when a rear-mounted cam and sensor flag are needed.
Ensure you specify the PT port thread, your required mounting accessory (from the SAID set: Basic, FA, LB, TC, FTC, TCM1, TCM2), and note that a magnet for CMSE or DMSE electronic sensors is not included. Because the stroke is 140mm, side-load bending risks are moderate, but external guides should still be used for heavy off-center loads. This cylinder is dimensionally interchangeable per ISO 15552. Note that it will not hold a load if air pressure is lost; for position holding, consider an external pilot-operated check valve or the BSAID clamp-lock variant.
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 SAID40X140 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the extend and retract forces are equal. It generates 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes, the SAID40X140 is dimensionally interchangeable per ISO 15552 mounting dimensions, allowing it to serve as a drop-in replacement for other ISO 15552 double-rod profile cylinders.
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