Airtac SAID40 Double Rod Cylinder SAID40AX125S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX125S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX125S
The AirTAC SAID40X125-S is a double-acting, double-rod ISO 15552 profile cylinder. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal 528 N of force each way at 0.5 MPa. The -S suffix indicates a magnet for position sensing, while the SUS420J2 stainless steel rod offers high corrosion resistance for harsh environments.
This through-rod design lets you mount the primary workpiece on one end and a secondary cam, guide, or position flag on the rear rod, providing dual-side guidance and superior anti-rotation control. It features adjustable air cushioning at both ends and extruded aluminum barrel sensor grooves on two sides for flexible switch mounting.
Airtac SAID40 Double Rod Cylinder SAID40AX125S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX125S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 SAID40AX125S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 SAID40AX125S Is Used
Symmetric Force Transfer
Drives a push-pull mechanism where equal 528 N thrust and matching speeds in both directions are critical for process timing.
Through-Rod Sensing
Actuates a primary clamp on the front rod while the rear rod triggers a DMSE solid-state sensor for a confirmation signal.
Anti-Rotation Slides
Guides a precision slide using both rod ends, preventing torsional twist that a single-rod cylinder cannot constrain.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX125S the Right Cylinder?
Choose this 40mm bore when an application requires symmetric force and speed in both directions, delivering 528 N at 0.5 MPa. If your mechanism needs less force, step down to the 32mm bore (345 N); if you need higher thrust, step up to the 50mm bore (825 N). The double-rod architecture is selected over a single-rod SAI when twin-station actuation or rear-rod sensing is required.
This cylinder uses a PT tapered port and supports mountings Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If position holding without live air pressure is needed, use an external pilot-operated check valve or consider the SAIL or BSAID series. At 125mm stroke, side-load is minimal, but always ensure the rod thread M12x1.25 is not subjected to unguided lateral forces.
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 SAID40AX125S FAQ
Because the double-rod design has the same effective area on both sides, it provides equal force in both directions: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X125-S is dimensionally interchangeable per ISO 15552. It uses a standard 40mm profile mounting interface and PT G1/4 ports, making it a direct drop-in replacement for other ISO 15552 double-rod cylinders.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAID40 Double Rod Cylinder SAID40AX125S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.