Airtac SAI40 Standard Air Cylinder SAI40X85
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X85 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 85mm 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
- Stroke85 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 SAI40X85
The AirTAC SAI40X85 is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa and 879 N at 0.7 MPa. Its 85 mm stroke provides a compact extension distance well-suited for mid-duty positioning tasks and short-stroke clamping operations.
This configuration features a standard carbon steel piston rod and PT tapered port threads. The extruded aluminum barrel incorporates dual sensor grooves, allowing for straightforward position feedback when paired with compatible switches, though a magnet is not included in this specific variant.
Airtac SAI40 Standard Air Cylinder SAI40X85 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X85 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 85 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 SAI40X85
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×85 | 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 SAI40X85 Is Used
Short-Stroke Clamping
Ideal for securing workpieces in machining fixtures where 879 N of thrust at 0.7 MPa provides reliable holding force.
Package Diverting
Provides robust actuation for diverting arms or pusher plates on packaging lines requiring an 85 mm reach.
Gate Control
Actuates small access gates or machine guarding doors with a compact stroke and durable carbon steel rod.
Is the Airtac SAI40 Standard Air Cylinder SAI40X85 the Right Cylinder?
Select this 40 mm bore unit when an application requires stepping up from the 32 mm bore class, which provides 402 N at 0.5 MPa, to achieve higher thrust without significantly increasing the footprint. The 85 mm stroke offers precise motion control for compact machinery.
For ISO 15552 drop-in compatibility, match the 40 mm bore, 85 mm stroke, G1/4 port, and required mounting accessories like FA flanges or TC trunnions. If the machinery requires the piston to maintain its position during a loss of air pressure, note that the standard adjustable air cushion only decelerates the rod at stroke end and does not act as a lock; an external pilot-operated check valve or the SAIL variant would be necessary for load 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 SAI40X85 FAQ
The SAI40X85 cylinder generates 628 N of push force and 528 N of pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X85 is dimensionally interchangeable per ISO 15552. It shares the same mounting interface and G1/4 port size as other standard profile cylinders, allowing for drop-in replacement.
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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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