Airtac SAIJ40 Adjustable Cylinder SAIJ40AX700-30
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX700-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 700mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke700 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 SAIJ40 Adjustable Cylinder SAIJ40AX700-30
The AirTAC SAIJ40X700-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 670 to 700 mm, allowing you to dial back the nominal 700 mm stroke by up to 30 mm during commissioning.
This variant uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance over standard carbon steel. The rear adjuster acts purely as a mechanical stop to set the retract end position; it does not hold the load without live air pressure. For position holding, consider the SAIL or BSAI series instead.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX700-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX700-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX700-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×700 | 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 SAIJ40 Adjustable Cylinder SAIJ40AX700-30 Is Used
Machine Changeovers
Quickly fine-tune the retract end-stop during product size changeovers on a packaging line without replacing the cylinder.
End-Position Tuning
Dial in the exact 670 to 700 mm travel window during commissioning to compensate for mechanical tolerance stack-up.
Variable Stroke Stops
Adjust the stroke length on the fly for conveyor diverters handling mixed product sizes without adding hard external stops.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX700-30 the Right Cylinder?
Choose this adjustable-stroke model when an installation requires fine end-position tuning without swapping cylinders or adding external stops. Because this 700 mm stroke is long, an external guide is recommended to prevent rod sag and side-load damage to the M12x1.25 rod thread.
This cylinder is dimensionally interchangeable per ISO 15552 and uses a PT G1/4 port. It supports the SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2) and operates without a magnet, so CMSE and DMSE sensors are not compatible with this specific configuration.
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 SAIJ40 Adjustable Cylinder SAIJ40AX700-30 FAQ
A rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective stroke by up to 30 mm. This creates a usable travel window of 670 to 700 mm. The adjuster is a stop, not a lock, and requires live air to hold the load.
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Covers non-human-caused product damage.
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