Airtac SAID40 Double Rod Cylinder SAID40X140S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X140S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X140S
The AirTAC SAID40X140-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 140mm stroke. Because the piston rod extends from both end covers, the annulus area is identical on both sides, yielding exactly 528 N of force in both extend and retract directions at 0.5 MPa. The integrated magnet (-S) enables position detection using AirTAC CMSE reed or DMSE electronic solid-state switches mounted along the dual sensor grooves.
This design allows you to mount the primary workpiece on the front rod and a secondary cam, position flag, or second tool on the rear rod. The standard carbon steel rod provides durable service, while the adjustable air cushions at both ends absorb end-of-stroke impact. Its extruded aluminum barrel makes it dimensionally interchangeable with other ISO 15552 double-rod cylinders.
Airtac SAID40 Double Rod Cylinder SAID40X140S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X140S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAID40X140S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SAID40X140S Is Used
Symmetric Force Transfer
Drives a transfer carriage where the matching 528 N extend and retract forces ensure consistent acceleration and deceleration without pressure spikes.
Twin-Station Actuation
Uses both rod ends to operate two separate clamps simultaneously from a single piston, saving space and maintaining perfect synchronization.
Anti-Rotation Slides
The dual rods provide high torsional resistance, keeping a vertical lifting slide perfectly aligned without external linear bearings.
Is the Airtac SAID40 Double Rod Cylinder SAID40X140S the Right Cylinder?
Select this 40mm bore cylinder when an application demands equal push and pull forces, specifically 528 N at 0.5 MPa or 739 N at 0.7 MPa. If you need less force, the 32mm bore offers 345 N both ways; if you require more, the 50mm bore provides 825 N. The twin-rod architecture is chosen over a single-rod SAI when the mechanism requires dual-side guidance to prevent rotation, or when a rear rod is needed to drive a secondary mechanism. Note that a plain SAID does not hold position if air pressure is lost; for locking requirements, consider the SAIL or BSAID series.
For drop-in replacement, match the 40mm bore, 140mm stroke, PT tapered port threads, and the appropriate mounting accessory. SAID supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It omits FB, CA, CB, and CR mounts found on single-rod variants. Since the 140mm stroke is under the 300mm threshold, side-load stress on the rod bearing is moderate, but external guidance is still recommended for heavy lateral loads.
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 SAID40X140S FAQ
Because it is a double-rod cylinder, the force is identical in both directions due to equal annulus areas. It provides 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa for both extend and retract strokes.
Yes, the SAID40X140-S is an extruded aluminum profile cylinder with standard ISO 15552 mounting dimensions, making it dimensionally interchangeable with other ISO 15552 double-rod cylinders. Ensure your mounting hardware uses the SAID-compatible set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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