Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 600mm 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
- Stroke600 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-100
The AirTAC SAIJ40X600-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. This mechanism allows you to dial back the 600 mm nominal travel by up to 100 mm, creating a precise 500-600 mm usable window. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for medium-duty positioning tasks.
Built with a SUS304 stainless steel rod and PT tapered port threads, this model handles demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. Remember that the rear adjuster acts purely as a travel stop for end-position tuning; it does not lock or hold the load without continuous air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 600 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 SAIJ40BX600-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×600 | 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 SAIJ40BX600-100 Is Used
Machine Changeover
Dial in the 500-600 mm travel window during product size changes on a packaging line without physically replacing the cylinder or adding external stopper blocks.
Variable End-Stop Positioning
Fine-tune the exact retract position of a diverter or pusher arm at commissioning, using the rear screw to compensate for mechanical wear or slight mounting offsets.
Long-Stroke Assembly Press
Use the 628 N push force to drive a long-travel assembly head, adjusting the final 100 mm of travel to ensure precise contact pressure on varying part heights.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-100 the Right Cylinder?
Choose this adjustable-stroke cylinder when your application requires fine-tuning the retract end-position during commissioning or product changeover, avoiding the need to swap out a fixed-stroke SAI cylinder. If your setup requires higher force, stepping up to a 50 mm bore yields 982 N of push at 0.5 MPa. Because this 600 mm stroke is long, the 16 mm rod and M12x1.25 thread still require an external guide to prevent excessive side-loading on the piston.
This SAIJ model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR foot and pivot brackets. If your machine needs true load-holding without live air, consider the SAIL (air-released lock) or BSAI (clamp-lock) instead of relying on the adjuster.
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 SAIJ40BX600-100 FAQ
The rear adjuster screw acts as a mechanical stop that shortens the 600 mm nominal stroke by up to 100 mm, giving a usable travel window of 500-600 mm. It only sets the end-position; it does not lock or hold the load without live air pressure.
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It can deliver up to 1130 N of push force at 0.9 MPa.
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