Airtac SAID40 Double Rod Cylinder SAID40BX500S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX500S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX500S
The AirTAC SAID40X500-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 500mm stroke. Because a rod extends from both end covers, the annulus area is identical on extend and retract, yielding an equal 528 N of force in each direction at 0.5 MPa. This symmetric output is ideal for mechanisms demanding consistent push and pull dynamics.
Equipped with a magnet (-S), it supports AirTAC CMSE reed and DMSE solid-state sensors via the dual-side barrel grooves. The rods are SUS304 stainless steel (code B) for corrosion resistance, and PT tapered ports seal securely. The twin-rod architecture inherently resists torsional load, keeping the piston guided true.
Airtac SAID40 Double Rod Cylinder SAID40BX500S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX500S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAID40BX500S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SAID40BX500S Is Used
Symmetric Force Transfer
Drives a shuttle mechanism where the equal 528 N push and pull force at 0.5 MPa ensures consistent cycle times in both directions without needing pressure adjustments.
Anti-Rotation Slides
The twin SUS304 rods prevent piston twist during a 500mm traverse, maintaining precise angular orientation for parts moving along an external guide rail.
Dual-Side Actuation
Mounts the primary workpiece on the front rod end and a secondary cam or position flag on the rear protruding rod to trigger AirTAC DMSE solid-state sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX500S the Right Cylinder?
Select this 40mm bore when an application requires matched bi-directional force and anti-rotation guidance over a 500mm span. If your mechanism needs less force, step down to the 32mm bore (345 N each way); if you need more push/pull, step up to the 50mm bore (825 N each way). Choose the double-rod SAID over a single-rod SAI when you need to mount a secondary cam, position flag, or second tool on the rear rod extension.
At 500mm stroke, the unsupported rod length increases susceptibility to side-load bending; utilize an external guide rail to prevent rod-bearing wear. This cylinder is dimensionally interchangeable per ISO 15552, offering a drop-in replacement for other ISO 15552 double-rod cylinders. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the adjustable 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 or the valve is centered. For dead-load holding, consider an external pilot-operated check valve or the SAIL/BSAID lock variants.
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 SAID40BX500S FAQ
Because the double-rod design subtracts rod area from both sides, 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 SAID40X500-S is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 double-rod cylinders. It uses a G1/4 port and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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