Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50 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 SAIJ40BX600-50
The AirTAC SAIJ40X600-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to fine-tune the effective travel. With a 600 mm nominal stroke and a 50 mm adjustment range, this model provides a usable travel window of 550-600 mm to perfectly dial in end positions during commissioning. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for medium-duty handling tasks.
This specific configuration features a SUS304 stainless steel rod (material code B) for superior corrosion resistance in demanding environments. Fluid supply is routed through PT tapered G1/4 ports, and the extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear adjuster acts strictly as a mechanical stop to set the travel end and deceleration point; it does not hold the load without live air pressure, so a SAIL or BSAI variant is required for true load-holding.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50 |
|---|---|
| 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 SAIJ40BX600-50
| 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 SAIJ40BX600-50 Is Used
Adjustable Machine Setup
Dial in the exact 550-600 mm travel distance during initial commissioning to compensate for mechanical tolerances without disassembling the line.
Product Changeover
Quickly adapt the retract end-stop for different product lengths on a single conveyor system, minimizing downtime between production runs.
Guided Ejection
Pushes parts out of a machining station with 628 N of force at 0.5 MPa, relying on an external guide to manage the side-load on the long 600 mm stroke.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50 the Right Cylinder?
Choose this adjustable-stroke model when your application requires variable end-stops or frequent product-size changeovers without physically swapping the cylinder or adding external stops. If your process demands higher clamping power, stepping up to the 50 mm bore increases the push force to 982 N at 0.5 MPa. Conversely, dropping to a 32 mm bore reduces the output to 402 N for lighter, faster tasks.
Because the 600 mm stroke is relatively long, the 16 mm diameter rod and M12x1.25 thread will experience amplified leverage forces under any side-load; an external guide rail is strongly recommended to prevent premature seal wear. This SAIJ model is dimensionally interchangeable per ISO 15552 standards and supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It operates efficiently at speeds between 30 and 800 mm/s.
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 SAIJ40BX600-50 FAQ
The 600 mm nominal stroke can be adjusted back by up to 50 mm via the rear stopper, providing a usable travel window of 550 to 600 mm. The adjuster is a mechanical stop, not a lock, and requires live air pressure to hold the load.
At a 0.5 MPa operating pressure, the 40 mm bore generates 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, the push force increases to 1130 N.
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