Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 170mm 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
- Stroke170 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100
The AirTAC SAIJ40X170-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 170 mm stroke that can be dialed back by up to 100 mm, yielding a highly flexible 70-170 mm usable travel window for precise end-position tuning at commissioning. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and operates at speeds between 30-800 mm/s.
This model uses a PT G1/4 port and incorporates adjustable air cushions at both ends to decelerate the load smoothly. The rear adjuster acts purely as a mechanical stop to set the travel limit and does not hold the load without live air pressure. For load-holding requirements, an external pilot-operated check valve or a related SAIL pneumatic lock cylinder is required.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 170 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 SAIJ40BX170-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×170 | 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 SAIJ40BX170-100 Is Used
Product Changeovers
Dial in the exact end-stop for varying package sizes on a conveyor, utilizing the full 70-170 mm travel window without physically replacing the cylinder.
Machine Setup
Fine-tune the retract position during commissioning to achieve perfect alignment, eliminating the need to machine and bolt on external mechanical stops.
Corrosive Environments
Leverage the SUS304 stainless steel rod for light-duty pushing tasks in washdown or chemical-prone areas where standard carbon steel rods would degrade.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100 the Right Cylinder?
Choose this 40 mm bore when an application demands 628 N push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) if extra thrust is needed, or down from a 50 mm bore (982 N) to save space. The 100 mm adjustment range is exceptionally wide, making this cylinder ideal for product-size changeovers on a packaging line where the end-stop must frequently shift between 70 mm and 170 mm without swapping out the actuator.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 170 mm nominal stroke, PT G1/4 port, and the chosen mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that this SAIJ series omits FB, CA, CB, and CR mounts. Because the stroke exceeds 150 mm, ensure adequate external guiding to prevent excessive side-loading on the 16 mm rod thread.
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 SAIJ40BX170-100 FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. If operated at 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 100 mm from the 170 mm nominal length, creating a 70-170 mm travel window. The adjuster functions only as a travel stop and does not lock the load pneumatically.
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