Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40
The AirTAC SAIJ40X1000-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 960 to 1000 mm, allowing you to dial back the effective stroke by up to 40 mm during commissioning. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for corrosion resistance.
This variant uses PT tapered port threads and lacks a standard piston magnet. The rear adjuster acts purely as a mechanical stop for end-position tuning; it does not lock or hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 1000 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 SAIJ40BX1000-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×1000 | 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 SAIJ40BX1000-40 Is Used
Machine Setup Tuning
Dial in the exact 960 to 1000 mm end-position during machine commissioning without physically swapping cylinders or adding external mechanical stops.
Product Changeover
Quickly adjust the rear stopper by up to 40 mm to accommodate different product lengths on a packaging line, reducing downtime between runs.
Long-Stroke Assembly
Utilize the 1000 mm travel for large-format component placement, using the fine-tune adjuster to absorb mechanical tolerances at the retract end.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40 the Right Cylinder?
Choose this 40 mm bore cylinder when your application requires 628 N of push force at 0.5 MPa, stepping up from a 32 mm bore that provides 402 N. The 40 mm adjustment range is ideal for product changeovers where the exact end-of-stroke position varies slightly, eliminating the need to swap out a fixed-stroke SAI cylinder or bolt on external stops. To match an ISO 15552 replacement, verify the 1000 mm stroke, 40 mm bore, PT ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because the 1000 mm stroke is long and unsupported, the 16 mm rod diameter requires an external guide rail to prevent excessive side-loading and premature seal wear. The standard extruded aluminum barrel includes sensor grooves on both sides, though you must add an -S magnet to use CMSE reed or DMSE electronic sensors.
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 SAIJ40BX1000-40 FAQ
At 0.5 MPa it provides 628 N of push force and 528 N of pull force. The operational speed range is 30-800 mm/s.
The rear adjuster screw lets you shorten the nominal 1000 mm stroke by up to 40 mm, creating a 960 to 1000 mm usable travel window. It functions as an end-stop, not a lock, and requires live air to hold position.
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