Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 200mm 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
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-40S
The AirTAC SAIJ40X200-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 160 to 200 mm for precise end-position tuning. Delivering 628 N of push force at 0.5 MPa, it integrates a SUS304 stainless steel rod for superior corrosion resistance and operates at speeds of 30-800 mm/s. The PT tapered port threads ensure a reliable, leak-free pneumatic connection.
This adjustable-stroke model omits the FB, CA, CB, and CR mounting styles, utilizing a focused set of interfaces: Basic, FA, LB, TC, FTC, TCM1, and TCM2. The built-in magnet supports AirTAC CMSE reed and DMSE electronic sensors, fitting neatly into the dual-side sensor grooves on the extruded aluminum barrel. The rear adjuster functions strictly as a travel stop to dial in the retraction point, not as a lock to hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 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 SAIJ40BX200-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 SAIJ40BX200-40S Is Used
Product Changeover
Dial in the 160-200 mm travel window during format changes on a packaging line, using the rear screw to set new end positions without replacing hardware.
Clamping Force Setup
Leverage the 628 N push force at 0.5 MPa to clamp varying part sizes, fine-tuning the retraction stop to prevent over-travel and workpiece damage.
Sensor-Driven Positioning
Utilize the integrated magnet with DMSE electronic sensors to confirm end-of-stroke positions while mechanically limiting travel with the rear stopper.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-40S the Right Cylinder?
Choose this 40 mm bore when an application requires 628 N of push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) if you need more clamping power, or dropping down from a 50 mm bore (982 N) to save space and air consumption. The 40 mm adjustment range is ideal for machine setups requiring product-size changeovers, allowing you to shift the end-stop by up to 40 mm without swapping the cylinder or adding external stops. For fixed-position tasks with no variance, a standard SAI cylinder is sufficient.
Because the nominal stroke is 200 mm, the 16 mm rod diameter handles moderate side loads, but an external guide is recommended if the load is heavy or unsupported. The rear screw mechanism sets the deceleration and end position, but it will not hold the load mechanically; for true load-holding without live air, consider an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 interchangeable cylinder exactly, specify the 40 mm bore, 200 mm stroke, -40 adjust code, PT ports, SUS304 (B) rod, and the -S magnet option.
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 SAIJ40BX200-40S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 128 kgf.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke from its 200 mm nominal length down to 160 mm. It sets the travel end and deceleration point but does not lock the load without continuous air pressure.
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