Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-50S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-50S 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 SAIJ40BX700-50S
The AirTAC SAIJ40X700-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 650 to 700 mm usable travel window. Delivering 879N of pull force at 0.7 MPa, it utilizes a 16mm SUS304 stainless steel rod and PT tapered port threads to meet strict pneumatic requirements.
This adjustable-stroke design allows you to fine-tune end positions at commissioning without swapping the cylinder or adding external stops. It includes a magnet for CMSE reed and DMSE electronic sensors, and uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB and CA brackets.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-50S |
|---|---|
| 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 SAIJ40BX700-50S
| 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 SAIJ40BX700-50S Is Used
Machine Changeover
Dial in the 650-700mm end-stop during product size transitions on a packaging line without disassembling the actuator.
Variable End Stops
Adjust the retract position on the fly to accommodate varying package lengths on a sorting conveyor system.
Commissioning Fine-Tune
Trim the effective stroke by up to 50mm to perfectly align tooling or clamping positions during initial machine setup.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-50S the Right Cylinder?
Choose this 40mm bore cylinder when you need 879N of pull force at 0.7 MPa, stepping down from a 63mm bore (2182N push) for a lighter footprint, or up from a 32mm bore (563N push) for higher thrust. The 50mm rear adjuster acts as a travel stop for product-size changeovers, but it does not lock the load without live air; for true load-holding without pressure, use an external rod lock or the SAIL/BSAI series.
Because the 700mm stroke is long, an external guide is recommended to prevent rod side-load damage. As a dimensionally interchangeable ISO 15552 cylinder, it matches standard SAI bore, stroke, and port dimensions while providing PT threads and a -S magnet for sensor integration.
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 SAIJ40BX700-50S FAQ
The rear adjuster acts as an external stop that shortens the effective stroke by up to 50mm, giving a usable travel window of 650 to 700mm. It only sets the travel end and does not lock the load without live air pressure.
At 0.7 MPa operating pressure, the 40mm bore provides 879N of push force and 724N of pull force, with a maximum speed range of 30-800 mm/s.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.