Airtac SAI40 Standard Air Cylinder SAI40X650
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X650 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 SAI40X650
The AirTAC SAI40X650 is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa. Featuring a 40 mm bore and 650 mm stroke, this extruded aluminum barrel design provides a dimensionally interchangeable drop-in replacement for other ISO 15552 actuators.
Equipped with a standard carbon steel piston rod and PT tapered port threads, it operates reliably at speeds between 30-800 mm/s. For high-temperature environments up to +70 C, the standard TPU seals can be swapped for Viton (H) alternatives, while the dual sensor grooves on the barrel accept CMSE or DMSE switches when a magnet is specified.
Airtac SAI40 Standard Air Cylinder SAI40X650 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X650 |
|---|---|
| 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 SAI40X650
| 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 SAI40X650 Is Used
Package Diversion
Extends 650 mm to actuate routing gates on packaging lines, utilizing the 628 N push force to smoothly redirect heavy cartons without lateral binding.
Pallet Handling
Drives mid-stroke lifting arms in automated storage systems where the 40 mm bore provides sufficient thrust to reposition lightweight pallets.
Component Ejection
Ejects machined parts from CNC fixtures, relying on the 30 mm adjustable air cushion to absorb kinetic energy at the end of the 650 mm extension.
Is the Airtac SAI40 Standard Air Cylinder SAI40X650 the Right Cylinder?
Providing 528 N of pull force at 0.5 MPa, this 40 mm bore is an optimal step up from the 32 mm version (402 N push) when slightly higher thrust is required, yet avoids the bulk of a 50 mm cylinder. Because the 650 mm stroke creates a long unsupported rod extension, side loads can cause severe rod-bearing bending and premature wear. Implementing an external guide rail or switching to a fully guided cylinder is strongly recommended to protect the actuator.
To match this ISO 15552 footprint, select a PT port thread, a 16 mm rod with M12x1.25 threading, and compatible mounting accessories like an LB foot or FA flange. Note that this standard profile cylinder relies on adjustable air cushions at both ends to decelerate the piston; it will not hold a load if air pressure is lost. Use the SAIL variant or an external pilot-operated check valve for static 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 SAI40 Standard Air Cylinder SAI40X650 FAQ
At a standard operating pressure of 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 879 N.
Yes, the SAI40X650 is a true ISO 15552 profile cylinder, making its mounting interface and dimensions fully interchangeable with comparable ISO 15552 cylinders from other manufacturers. It features a G1/4 port and M12x1.25 rod thread.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAI40 Standard Air Cylinder SAI40X650
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.