Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-30 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 SAIJ40BX600-30
The AirTAC SAIJ40X600-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel back by up to 30 mm. This yields a usable stroke window of 570 to 600 mm, enabling precise end-position tuning at machine commissioning without swapping out the unit. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance.
The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches if a magnet is specified later. Because this 600 mm stroke is relatively long, the 16 mm rod and M12x1.25 thread should be paired with an external guide to prevent excessive side-loading. The rear stopper acts purely as a travel end deceleration device, meaning it will not hold a load safely without continuous live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-30 |
|---|---|
| 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 SAIJ40BX600-30
| 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 SAIJ40BX600-30 Is Used
Machine Changeover
Dial in the 570-600 mm travel window during product size transitions without physically replacing the cylinder or adding external mechanical stops.
Variable End-Stop Positioning
Adjust the retract end-position by up to 30 mm to accommodate varying package lengths on a packaging line at commissioning.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for reliable thrust in food processing or chemical handling areas where moisture is present.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-30 the Right Cylinder?
Choose this 40 mm bore when 628 N of thrust at 0.5 MPa is sufficient, allowing a step down from a 50 mm bore that produces 982 N to save compressed air. The 30 mm adjustment range is ideal for applications requiring variable end-stops or fine-tuning during product changeovers, a distinct advantage over a fixed-stroke SAI cylinder. If your process demands true load-holding without air pressure, select a SAIL or BSAI series cylinder instead, as the SAIJ adjuster is not a lock.
For a direct ISO 15552 replacement, match the 40 mm bore, 600 mm stroke, 30 mm adjustment, PT tapered port thread, and standard non-magnet configuration. The supported mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Given the 600 mm travel, always incorporate an external guide rail to manage side loads and protect the piston rod.
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 SAIJ40BX600-30 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. It operates at speeds between 30 and 800 mm/s.
A rear external screw acts as a stopper, allowing you to shorten the 600 mm nominal stroke by up to 30 mm. This creates a usable travel window of 570 to 600 mm for fine-tuning the end position without replacing the cylinder.
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