Airtac SAID40 Double Rod Cylinder SAID40X950
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X950 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 950mm 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
- Stroke950 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X950
The AirTAC SAID40X950 is a double-acting, double-rod ISO 15552 profile cylinder engineered for applications demanding equal force and speed in both directions. Because a carbon steel rod exits both end covers, the annulus area is identical on extend and retract, yielding a balanced 528 N output at 0.5 MPa on each stroke. This 950 mm stroke configuration is a non-standard, made-to-order length designed for extended travel requirements.
Beyond symmetric thrust, the twin-rod architecture allows you to mount the primary workpiece on the front rod end while utilizing the rear protrusion for a position flag, cam, or secondary mechanism. The extruded aluminum barrel features dual sensor grooves, and while this unit omits the magnet for standard switching, the grooves remain ready for future CMSE reed or DMSE electronic sensors if retrofitted.
Airtac SAID40 Double Rod Cylinder SAID40X950 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X950 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 950 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 SAID40X950
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×950 | 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 SAID40X950 Is Used
Twin-Station Actuation
Drive two separate mechanisms in opposite directions simultaneously, utilizing the equal 528 N force and synchronized speed from both rod ends.
Anti-Rotation Slides
The dual-rod geometry resists torsional twisting better than a single rod, keeping long-travel linear slides perfectly aligned without external guides.
Through-Rod Sensing
Mount the primary tool on the front rod and attach a limit flag to the rear protrusion to trigger external sensors without interfering with the work area.
Is the Airtac SAID40 Double Rod Cylinder SAID40X950 the Right Cylinder?
Selecting the SAID40X950 is optimal when your mechanism requires anti-rotation guidance, dual-side actuation, or rear-rod sensing that a single-rod SAI cannot provide. If your application needs less thrust, stepping down to the 32 mm bore offers 345 N both ways at 0.5 MPa; stepping up to the 50 mm bore provides 825 N. Because this is a 950 mm stroke, the extended unsupported rod length increases the risk of rod-bearing bending under side loads—an external guide rail is strongly recommended to prevent premature seal wear.
As a dimensionally interchangeable ISO 15552 cylinder, it serves as a drop-in replacement for other ISO 15552 double-rod cylinders using the PT G1/4 port and M12x1.25 rod thread. It supports the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) but omits FB, CA, CB, and CR brackets. Note that variable air cushions at both ends only decelerate the piston near stroke end; this cylinder will drift and cannot hold a load if air pressure is lost. For dead-load holding, consider an external pilot-operated check valve or the BSAID clamp-lock variant.
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 SAID40X950 FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers 528 N of force in both the extend and retract directions at 0.5 MPa, and 739 N at 0.7 MPa.
Yes. The SAID40X950 is an extruded aluminum profile cylinder with standard ISO 15552 mounting dimensions, making it interchangeable with other ISO 15552 double-rod cylinders. It uses a G1/4 PT port and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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