Airtac SAI40 Standard Air Cylinder SAI40X850
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X850 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 850mm 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
- Stroke850 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 SAI40X850
The AirTAC SAI40X850 is a double-acting ISO 15552 profile cylinder featuring an 850mm stroke and a 40mm bore. It generates 628N of push force and 528N of pull force at 0.5MPa, making it well-suited for long-travel material handling tasks.
This model incorporates an extruded aluminum barrel with sensor grooves on both sides for CMSE or DMSE switches when a magnet is specified. The standard configuration includes a carbon steel piston rod and a PT tapered port thread, ensuring robust performance in demanding pneumatic setups.
Airtac SAI40 Standard Air Cylinder SAI40X850 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X850 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 850 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 SAI40X850
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×850 | 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 SAI40X850 Is Used
Long-Travel Transfer
Drives extended conveyor pushing arms or pallet diverter stations where a full 850mm stroke is required to clear adjacent machinery.
Vertical Material Lift
Elevates lightweight product tiers or packaging components in automated storage systems, utilizing its 628N thrust to overcome gravity and friction.
CNC Loading Arm
Actuates long-reach robotic loading arms that feed raw bar stock or blanks into machining centers, benefiting from the precise ISO 15552 mounting interface.
Is the Airtac SAI40 Standard Air Cylinder SAI40X850 the Right Cylinder?
Providing 628N of thrust at 0.5MPa, this 40mm bore sits between the 32mm bore (402N) and the 50mm bore (982N) options. Choose the SAI40 when the 32mm lacks the necessary power for extended travel, but the 50mm would be physically oversized for your mounting footprint.
Because the 850mm stroke approaches the maximum standard limit of 1200mm for this bore, the unsupported piston rod is highly susceptible to bending under side loads. Implement an external guide rail or utilize a guided cylinder mechanism to prevent premature rod-bearing wear. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If the application requires position holding without live air pressure, consider the SAIL locking variant or an external pilot-operated check valve. This unit is dimensionally interchangeable per ISO 15552, accepting standard FA/FB flange or LB foot mounts.
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 SAI40X850 FAQ
At an operating pressure of 0.5MPa, the SAI40X850 generates a push force of 628N and a pull force of 528N. At 0.7MPa, the push force increases to 879N.
Yes, the SAI40X850 is a genuine ISO 15552 profile cylinder, making its mounting interface and envelope dimensions fully interchangeable with other ISO 15552 standard cylinders. It uses a G1/4 port and an M12x1.25 rod thread.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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