Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-20
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-20 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 SAIJ40BX600-20
The AirTAC SAIJ40X600-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 580-600mm usable travel window. Delivering 628N of push force at 0.5 MPa, it integrates a PT G1/4 port and a 16mm SUS304 stainless steel rod for superior corrosion resistance. This long-stroke actuator allows precise end-position tuning at commissioning without swapping the hardware.
The rear adjustment screw acts strictly as a travel stop to decelerate the piston, not as a lock to hold the load without live air. Extruded aluminum barrel construction includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-20 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-20 |
|---|---|
| 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 SAIJ40BX600-20
| 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 SAIJ40BX600-20 Is Used
Product Changeover Dials
Dial in the exact 580 to 600mm end-stop during format changes on packaging lines without swapping physical cylinder hardware.
Long-Travel Diverters
Fine-tune the retract position of long-stroke sorting gates to accommodate varying package sizes on the fly.
Commissioning Calibration
Trim the nominal 600mm stroke by up to 20mm during machine setup to perfectly align tooling without external stoppers.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-20 the Right Cylinder?
Choose this 40mm bore over the smaller 32mm version when you need more than the 402N push force available at 0.5 MPa, or step up to the 50mm bore for 982N if your load demands higher thrust. The adjustable stroke is selected over a fixed SAI cylinder when a machine requires variable end-stops for quick product changeovers.
Because the 600mm stroke is substantial, the 16mm rod and M12x1.25 thread provide robust support, but an external guide is recommended to prevent side-loading damage on long unsupported travels. For load-holding without live air pressure, this cylinder cannot be used; select a SAIL or BSAI model instead.
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 SAIJ40BX600-20 FAQ
The rear adjuster allows you to shorten the 600mm nominal stroke by up to 20mm, providing a usable travel window of 580-600mm. This stopper fine-tunes the end position but does not lock the load without continuous air pressure.
At an operating pressure of 0.5 MPa, the SAIJ40X600-20 provides 628N of push force and 528N of pull force. It operates at speeds between 30 and 800 mm/s.
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