Airtac SAI40 Standard Air Cylinder SAI40X650S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X650S 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
- 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 SAI40 Standard Air Cylinder SAI40X650S
The AirTAC SAI40X650-S is a double-acting ISO 15552 profile cylinder engineered for a 40mm bore and a 650mm stroke. It provides a robust push force of 628N and a pull force of 528N at 0.5 MPa, making it well-suited for extended travel automation tasks.
This specific configuration includes a magnetic piston for direct compatibility with CMSE and DMSE series sensor switches. The piston rod is constructed from durable carbon steel, and the extruded aluminum barrel features integrated sensor grooves on both sides for flexible switch mounting.
Airtac SAI40 Standard Air Cylinder SAI40X650S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X650S |
|---|---|
| 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 SAI40 Standard Air Cylinder SAI40X650S
| 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 SAI40 Standard Air Cylinder SAI40X650S Is Used
Material Transfer
Drives long-stroke pushers on conveyor lines to transfer products between packaging stations over extended distances.
Pallet Handling
Actuates lifting and positioning mechanisms for palletized goods in automated storage and retrieval systems.
Component Sorting
Executes lateral diversion of workpieces on assembly lines, utilizing the 650mm stroke to route parts to different cells.
Is the Airtac SAI40 Standard Air Cylinder SAI40X650S the Right Cylinder?
For applications requiring less reach and a slightly lower force profile, the SAI32 bore yields 402N of push force at 0.5 MPa. If your application demands greater thrust, stepping up to the SAI50 bore increases the push force to 982N. Because this 650mm stroke creates a long unsupported rod extension, it is highly susceptible to bending under side loads; utilizing an external guide rail or a dedicated guided cylinder is strongly recommended to prevent premature rod-bearing wear.
When specifying a replacement, ensure the ISO 15552 mounting dimensions match your existing fixture. This unit utilizes a PT G1/4 port, an M12x1.25 rod thread, and adjustable air cushions at both ends. If the machinery loses air pressure, this standard cylinder will not hold its load; for critical drop prevention, consider the SAIL locking variant or an external pilot-operated check valve.
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 SAI40 Standard Air Cylinder SAI40X650S FAQ
At an operating pressure of 0.5 MPa, the SAI40X650-S generates a push force of 628N and a pull force of 528N. At 0.7 MPa, the push force increases to 879N.
Yes, the SAI40X650-S is dimensionally interchangeable per ISO 15552 standards. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with a 40mm bore and 650mm stroke, provided the G1/4 port and M12x1.25 rod thread match your setup.
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