Airtac SAID40 Double Rod Cylinder SAID40AX800S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX800S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX800S
The AirTAC SAID40X800-S is a double-acting, double-rod ISO 15552 profile cylinder featuring an 800mm stroke. Because the twin rods occupy both piston sides, the annulus area is identical in each direction, yielding exactly 528N of force at 0.5 MPa on extend and retract alike. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position monitoring.
This variant uses a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance, PT tapered port threads, and a built-in magnet (-S) compatible with AirTAC CMSE reed and DMSE electronic solid-state switches. A rod protrudes from both end covers, so you must account for extra rear clearance in your machine layout.
Airtac SAID40 Double Rod Cylinder SAID40AX800S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX800S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAID40AX800S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SAID40AX800S Is Used
Symmetric Force Transfer
Drives a shuttle mechanism where the 528N extend and retract forces must remain perfectly matched, preventing speed fluctuations between forward and return cycles.
Anti-Rotation Slides
Utilizes the dual-rod geometry to guide a heavy vertical slide, preventing torsional twist without requiring external linear bearings.
Through-Rod Sensing
Mounts the primary workpiece on the front rod end and a physical cam or DMSE sensor flag on the rear protruding rod to trigger downstream operations.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX800S the Right Cylinder?
Choose this 40mm bore double-rod actuator when an application demands equal push and pull forces, or requires anti-rotation guidance and dual-side tooling. If your mechanism needs higher thrust, stepping up to the 50mm bore provides 825N both ways at 0.5 MPa. Conversely, downsizing to the 32mm bore offers 345N. Select the SAID40X800-S specifically for long 800mm travel requirements paired with rear-rod cam actuation or through-rod sensing.
At 800mm of stroke, the unsupported piston rod is highly susceptible to bending and side-load stress. You must use an external linear guide to prevent premature rod-bearing wear. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If the machine loses air pressure, the cylinder will drift, so specify an external pilot-operated check valve or a BSAID clamp-lock cylinder for position holding. This unit is dimensionally interchangeable per ISO 15552, using the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omitting the FB, CA, CB, and CR brackets.
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 SAID40AX800S FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the push and pull forces are identical. It delivers 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes. As a profile-type ISO 15552 cylinder, it is dimensionally interchangeable with other standard ISO 15552 double-rod cylinders. It uses the same mounting footprint for Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets, though it omits the FB, CA, CB, and CR mounts found on single-rod variants.
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