Airtac SAID40 Double Rod Cylinder SAID40BX260
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX260 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 260mm 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
- Stroke260 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAID40 Double Rod Cylinder SAID40BX260
The AirTAC SAID40X260 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 260 mm stroke. Because a stainless SUS304 rod exits both end covers, the annulus area is identical on extend and retract. This yields an equal 528 N of thrust and pull force at 0.5 MPa (739 N at 0.7 MPa), ensuring perfectly symmetric motion for demanding transfer tasks.
The twin-rod architecture lets you mount the primary workpiece on the front rod end while using the rear protrusion for a cam, position flag, or secondary mechanism. The extruded aluminum barrel includes sensor grooves on both sides, and adjustable air cushions at both ends absorb end-of-stroke impacts. Note that this configuration requires extra rear clearance compared to a single-rod SAI variant.
Airtac SAID40 Double Rod Cylinder SAID40BX260 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX260 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 260 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 SAID40BX260
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×260 | 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 SAID40BX260 Is Used
Symmetric Transfer
Drives a conveyor pick-and-place head where the matching extend and retract forces prevent stalling on heavy bilateral loads.
Anti-Rotation Slide
Guides a vertical lifting slide without twisting, using the dual rod ends to maintain strict parallelism over the 260 mm travel.
Rear-Cam Actuation
Mounts a cam on the rear rod end to trigger a secondary mechanical valve while the front rod performs the primary work.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX260 the Right Cylinder?
Select this 40 mm bore when your mechanism requires equal push and pull forces alongside anti-rotation guidance, as opposed to the unequal forces of a single-rod SAI. If your application needs less force, stepping down to a 32 mm bore yields 345 N each way at 0.5 MPa; stepping up to a 50 mm bore provides 825 N. Because the 260 mm stroke is relatively long, the 16 mm rod is subject to bending under heavy lateral loads—always use an external guide rail to prevent rod-bearing wear.
This model uses PT tapered port threads (G1/4) and omits the magnet, so position sensing is not possible without modification. It is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR accessories. Remember that the adjustable cushions only decelerate the piston; they do not hold a load. If air pressure drops, the cylinder drifts, so add a BSAID clamp-lock or external rod lock for fail-safe holding.
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 SAID40BX260 FAQ
Because the double-rod design subtracts the rod area from both sides, the push and pull forces are equal. It generates 528 N in both directions at 0.5 MPa, and 739 N both ways at 0.7 MPa.
Yes. The SAID40X260 is a true ISO 15552 profile cylinder, making its mounting dimensions a drop-in replacement for other ISO 15552 double-rod cylinders. It uses PT (G1/4) ports and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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