Airtac SAID40 Double Rod Cylinder SAID40X650S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X650S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 650mm 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
- Stroke650 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X650S
The AirTAC SAID40X650-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 650mm stroke. Because the piston rod exits both end covers, the annulus area is identical on both sides, yielding exactly 528N of force in both extend and retract directions at 0.5 MPa. The integrated magnet (-S) enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state switches mounted into the dual sensor grooves.
This through-rod architecture allows you to mount the primary workpiece on the front rod while using the rear rod extension to drive a secondary mechanism or trigger a limit flag. It utilizes a carbon steel rod for robust load transmission and features adjustable air cushioning at both ends to decelerate the piston smoothly over the 650mm travel.
Airtac SAID40 Double Rod Cylinder SAID40X650S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X650S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 650 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 SAID40X650S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×650 | 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 SAID40X650S Is Used
Symmetric Force Transfer
Drives a dual-sided clamping mechanism where the equal 528N extend and retract forces ensure consistent pressure on both strokes without requiring pressure adjustments.
Through-Rod Sensing
Mounts the primary tool on the front rod while the rear rod protrudes to trigger a DMSE solid-state sensor, providing exact end-of-stroke confirmation in tight spaces.
Anti-Rotation Slides
Utilizes the twin-rod geometry to guide a vertical lift carriage, preventing unwanted rotation and torsion without needing external linear bearings.
Is the Airtac SAID40 Double Rod Cylinder SAID40X650S the Right Cylinder?
Select this 40mm bore model when an application requires equal push and pull forces (528N at 0.5 MPa) alongside anti-rotation guidance. If your project demands less force, stepping down to the 32mm bore offers 345N, while stepping up to the 50mm bore provides 825N. The double-rod design is preferred over a single-rod SAI when you need twin-station actuation or rear-end sensing. For drop-in replacements, verify the 40mm bore, 650mm stroke, PT port thread, and mounting accessory (choose from Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Because the stroke is 650mm, the extended rod length increases the risk of side-load bending; an external guide bearing is recommended to support the load and prevent premature seal wear. Note that the adjustable air cushions only decelerate the piston near stroke end and do not lock the load—if air pressure is lost, the cylinder will drift, requiring an external pilot-operated check valve for position 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 SAID40X650S FAQ
Because it is a double-rod cylinder, the force is identical in both directions due to equal annulus areas. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extend and retract strokes.
Yes, the SAID40X650-S is dimensionally interchangeable per ISO 15552. It shares the standard mounting footprint and PT G1/4 port thread, making it a drop-in replacement for other ISO 15552 profile cylinders, provided you use the SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAID40 Double Rod Cylinder SAID40X650S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.