Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100S
The AirTAC SAIJ40X700-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 700 mm stroke that can be dialed back by up to 100 mm, yielding a 600-700 mm usable travel window for precise end-position tuning during commissioning. In the 40 mm bore class, it delivers 628 N of push force and 528 N of pull force at 0.5 MPa.
This variant uses a SUS304 stainless steel rod for corrosion resistance and includes a magnet (-S) for CMSE reed or DMSE electronic solid-state sensors. The extruded aluminum barrel includes sensor grooves on both sides. It uses a PT tapered G1/4 port and offers adjustable air cushions at both ends to decelerate the load.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100S |
|---|---|
| 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 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX700-100S
| 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 SAIJ40BX700-100S Is Used
Machine Changeover
Dial in the 600-700 mm travel window during product size changes to set new end positions quickly without physically swapping cylinders.
Variable End Stops
Fine-tune the retract position on a conveyor sorting pusher by up to 100 mm to accommodate different package lengths on the fly.
Long-Stroke Diverter
Use the 700 mm travel to push items across wide lanes, relying on the rear stopper to trim the exact extension distance during setup.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100S the Right Cylinder?
Choose this 40 mm bore when an application requires 628 N push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) for higher thrust, or down from a 50 mm bore (982 N) to save space. The 100 mm adjustment range is ideal for product changeovers, allowing you to set a new end-stop without swapping the cylinder or adding external stops. Because the 700 mm stroke is long, an external guide rail is recommended to handle side loads and prevent rod binding.
For an exact ISO 15552 replacement match, specify: 40 mm bore, 700 mm stroke, 100 mm adjustment, PT port thread, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and a magnet for CMSE/DMSE sensors. Note that the rear adjuster acts as a travel stop, not a lock; the SAIJ will not hold a load without live air pressure, so consider SAIL or BSAI cylinders for fail-safe 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 SAIJ40 Adjustable Cylinder SAIJ40BX700-100S FAQ
An external adjusting screw at the rear acts as a stopper, allowing you to shorten the effective stroke by up to 100 mm. This creates a 600-700 mm usable travel window for fine-tuning end positions at commissioning without changing the cylinder.
At 0.5 MPa, it provides 628 N of push force and 528 N of pull force. The operating speed range is 30-800 mm/s, adjustable via the G1/4 port airflow and cushion settings.
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