Airtac SAID40 Double Rod Cylinder SAID40AX280
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX280 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 280mm 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
- Stroke280 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX280
The AirTAC SAID40X280 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 280 mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal push and pull force of 528 N at 0.5 MPa (739 N at 0.7 MPa). It is dimensionally interchangeable with other ISO 15552 double-rod cylinders.
This variant uses a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel. The barrel is extruded aluminum with sensor switch grooves on both sides. It features PT tapered port threads (G1/4), adjustable air cushioning at both ends, and operates at speeds from 30-800 mm/s.
Airtac SAID40 Double Rod Cylinder SAID40AX280 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX280 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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 SAID40AX280
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×280 | 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 SAID40AX280 Is Used
Symmetric Force Transfer
Drives a transfer carriage where the matching 528 N push and pull forces at 0.5 MPa ensure consistent cycle times and predictable momentum in both directions without pressure compensation.
Anti-Rotation Slides
The twin-rod architecture keeps the guided workpiece from rotating under offset loads, maintaining precise alignment for machining or inspection fixtures over the 280 mm travel.
Dual-Station Actuation
Mounts the primary work tool on the front rod extension and a secondary cam or mechanical linkage on the rear rod end to synchronize a secondary motion in the assembly cell.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX280 the Right Cylinder?
Select this 40 mm bore model when an application requires equal force and speed in both travel directions, dual-side guidance, or a rear-rod extension for mounting a cam or position flag. If your mechanism needs less force, the neighboring 32 mm bore provides 345 N each way at 0.5 MPa; if you need more, the 50 mm bore offers 825 N. For this 280 mm stroke, the extended length is longer than a single-rod SAI because the rod protrudes from the rear cover, so ensure you have adequate clearance.
Because the stroke is 280 mm, the unsupported rod length increases the risk of rod-bearing bending under heavy lateral loads; use an external guide rail to prevent premature wear. This model lacks a magnet (-S), so it cannot use AirTAC CMSE or DMSE sensors without modification. If the machine must hold a load vertically or resist drifting when air is exhausted, note that the air cushions only decelerate the piston near stroke end and do not act as a lock—consider an SAIL or BSAID cylinder instead. Mounting options include 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 SAID40AX280 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It provides 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X280 is an extruded aluminum profile cylinder with dimensions interchangeable per ISO 15552 standards. You can use it as a drop-in replacement for other ISO 15552 double-rod cylinders with a 40 mm bore and 280 mm stroke.
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