Airtac SAID40 Double Rod Cylinder SAID40X800
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X800 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 SAID40X800
The AirTAC SAID40X800 is a double-acting, double-rod ISO 15552 profile cylinder featuring an 800mm stroke and a 40mm bore. Because a carbon steel rod exits both end covers, the effective annulus area is identical on extension and retraction. This geometry delivers an equal bidirectional force of 528N at 0.5MPa, ensuring perfectly symmetric speed and thrust for demanding transfer operations.
The twin-rod architecture allows you to mount the primary workpiece on one end while utilizing the rear rod end for a cam, position flag, or secondary mechanism. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches, though this specific SKU is configured without a magnet. It uses a PT G1/4 port and adjustable air cushions at both ends to decelerate the payload smoothly.
Airtac SAID40 Double Rod Cylinder SAID40X800 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X800 |
|---|---|
| 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 SAID40X800
| 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 SAID40X800 Is Used
Symmetric Transfer
Drives a transfer carriage with identical 528N force and matching speed in both directions, preventing stalling on the return stroke.
Anti-Rotation Slides
The twin-rod design resists torsional deflection, keeping linear slides perfectly aligned without rotational drift over the 800mm travel.
Rear Cam Actuation
Mounts the primary tool on the front rod while the rear rod end drives a secondary cam or mechanical flag for external sequencing.
Is the Airtac SAID40 Double Rod Cylinder SAID40X800 the Right Cylinder?
Select this 40mm bore model when an application strictly requires equal push and pull forces alongside anti-rotation guidance. If your mechanism needs less thrust, the 32mm bore provides 345N both ways at 0.5MPa; stepping up to the 50mm bore yields 825N. At an 800mm stroke, the unsupported piston rod is highly susceptible to bending and side-load stress. You must use an external guide rail to prevent premature rod-bearing wear and cylinder binding.
Choose a double-rod SAID over a single-rod SAI when you need to drive twin stations or mount a rear limit flag. Note that this cylinder does not hold its load if air pressure is lost; for position holding, consider the SAIL or BSAID series. It is dimensionally interchangeable per ISO 15552 and uses the reduced SAID mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAID40X800 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It generates 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa.
Yes. The SAID40X800 is an extruded aluminum profile cylinder with ISO 15552 mounting interface dimensions, making it a drop-in replacement for other ISO 15552 double-rod cylinders. It uses a G1/4 port and M12x1.25 rod thread.
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