Airtac SAID40 Double Rod Cylinder SAID40BX70S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX70S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 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 SAID40BX70S
The AirTAC SAID40X70-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 70mm stroke. Because the SUS304 stainless steel rod exits both end covers, the effective piston area is identical in each direction, yielding perfectly symmetrical thrust of 528 N on both extend and retract at 0.5 MPa.
Equipped with a magnet (-S), it supports CMSE reed and DMSE electronic sensors housed within the dual side grooves of the extruded aluminum barrel. The rear rod extension is ideal for mounting a secondary cam, position flag, or driving a secondary mechanism while keeping the load guided against rotation.
Airtac SAID40 Double Rod Cylinder SAID40BX70S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX70S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 SAID40BX70S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 SAID40BX70S Is Used
Symmetric Transfer
Drives a transfer carriage with identical 528 N force and speed in both directions, ensuring consistent cycle times for mid-stroke positioning.
Anti-Rotation Slide
The twin SUS304 rods prevent mechanical twisting during vertical clamping or lifting, maintaining precise alignment without external linear bearings.
Rear-Cam Actuation
Uses the protruding rear rod to trip a DMSE electronic sensor or mechanical limit flag, synchronizing a secondary process while the front rod performs the main work.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX70S the Right Cylinder?
Select this 40mm bore model when an application demands equal push and pull forces alongside anti-rotation stability, stepping up from a 32mm bore (345 N both ways) or down from a 50mm bore (825 N both ways). The PT tapered port thread and G1/4 port size match standard pneumatic manifolds. It uses the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR brackets found on single-rod variants.
Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If the system loses air pressure, the cylinder will drift, requiring a SAIL lock, BSAID clamp-lock, or external pilot-operated check valve for position holding. At 70mm stroke, side-load stress on the rod bearing is minimal, but external guidance is always recommended for heavy off-center loads.
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 SAID40BX70S FAQ
Because the rod occupies both sides of the piston, the extend and retract forces are equal. It outputs 528 N both ways at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, it is dimensionally interchangeable per ISO 15552. However, as a double-rod variant, it only supports the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting accessories, omitting FB, CA, CB, and CR brackets.
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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.
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Most inquiries answered within 7-8 hours.
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