Airtac SAID40 Double Rod Cylinder SAID40BX20
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 20mm 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
- Stroke20 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 SAID40BX20
The AirTAC SAID40X20 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 20mm stroke. Because a rod exits both end covers, the annulus area is identical on the extend and retract sides, yielding a perfectly symmetrical 528N force at 0.5 MPa in either direction.
This specific configuration uses SUS304 stainless steel rods (material code B) for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel integrates sensor grooves on both sides, allowing you to mount CMSE reed or DMSE solid-state switches precisely where needed.
Airtac SAID40 Double Rod Cylinder SAID40BX20 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 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 SAID40BX20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 SAID40BX20 Is Used
Symmetric Force Transfer
Drives a transfer shuttle where the 528N force remains identical in both directions, ensuring perfectly balanced acceleration and deceleration of the workpiece.
Anti-Rotation Slides
The twin-rod architecture keeps the load guided against rotation better than a single rod, ideal for lifting and positioning flat panel materials.
Dual-Side Tooling
Mount the primary workpiece on the front rod end and a secondary cam or position flag on the rear rod end to trigger external actuators sequentially.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX20 the Right Cylinder?
Select this 40mm bore when an application demands equal push and pull forces alongside anti-rotation guidance, which a single-rod SAI cannot provide. If your mechanism requires less force, stepping down to a 32mm bore offers 345N both ways, while moving up to a 50mm bore provides 825N. The 20mm stroke is ideal for compact, high-frequency reciprocating motions.
Keep in mind that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If the air supply is lost, the piston will drift, requiring an external pilot-operated check valve or a SAIL lock cylinder for position holding. Ensure you specify PT ports and SUS304 rod material when requesting a quote.
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 SAID40BX20 FAQ
Because it is a double-rod cylinder, the push and pull 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, it is dimensionally interchangeable per ISO 15552. The SAID series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, but omits FB, CA, CB, and CR configurations.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAID40 Double Rod Cylinder SAID40BX20
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