
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50AX375 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 375mm 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.
The AirTAC SAID50X375 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 375mm stroke. Because a piston rod extends from both end covers, the effective annulus area is identical on the extend and retract strokes. This symmetry means you get exactly 825 N of force in both directions at 0.5 MPa, ensuring perfectly balanced motion control. The unit is built with a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and uses PT tapered port threads.
A major advantage of this twin-rod layout is the ability to mount a primary workpiece on the front rod while utilizing the rear protruding rod for external guidance, anti-rotation, or to trigger a position flag. The extruded aluminum barrel includes sensor grooves on both sides for straightforward DMSE solid-state or CMSE reed switch installation. Note that the overall length is greater than a single-rod SAI variant because the rear rod requires clearance to exit the back cover.
| Model | Airtac SAID50 Double Rod Cylinder SAID50AX375 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 375 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×375 | 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.
Ideal for transferring parts across a conveyor where the 825 N push and pull forces must remain perfectly equal to prevent shifting during direction reversal.
The twin through-rods provide inherent lateral guidance, preventing the load from twisting during vertical or horizontal indexing movements.
Mount the main tooling on the front rod while using the rear rod extension to drive a secondary mechanism or trigger a mechanical limit switch.
Select this 50mm bore model when an application demands equal push and pull forces, specifically 825 N at 0.5 MPa or 1154 N at 0.7 MPa. If your mechanism requires less force, stepping down to the 40mm bore yields 528 N both ways, whereas stepping up to the 63mm bore provides 1402 N. The double-rod design is preferred over a single-rod SAI when you need to drive twin stations, prevent the load from rotating, or mount a rear cam for secondary actuation.
This cylinder uses a PT port thread and supports the reduced SAID mounting accessory set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting the FB, CA, CB, and CR brackets used only on single-rod versions). Because the stroke is 375mm, the unsupported rod length is significant; to prevent rod-bearing bending under side loads, you should implement an external guide. Furthermore, this cylinder will drift if air pressure is lost—the adjustable air cushions only decelerate the piston near stroke end, so for position holding without live pressure, consider an external rod lock or the BSAID clamp-lock variant.
Quick checklist
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It provides 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and 1484 N at 0.9 MPa.
Yes, it is dimensionally interchangeable with ISO 15552 profile cylinders. It supports the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting brackets, but omits the FB, CA, CB, and CR brackets which are exclusive to single-rod versions.
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