Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75 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 SAIJ40BX1000-75
The AirTAC SAIJ40X1000-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 628N of push force at 0.5MPa and provides a usable travel window of 925-1000mm, letting you dial back the nominal 1000mm stroke by up to 75mm during commissioning without adding external stops.
This unit uses a SUS304 stainless steel rod for superior corrosion resistance and is fitted with PT tapered ports. Because the stroke runs to 1000mm on a 16mm rod, an external guide is highly recommended to manage side loads. The rear screw acts as a travel stop for end-position tuning, not a load-holding lock.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75 |
|---|---|
| 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 SAIJ40BX1000-75
| 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 SAIJ40BX1000-75 Is Used
Long-Stroke Conveyor Positioning
Fine-tune the 925-1000mm travel window during product size changeovers without physically swapping out a 1-meter cylinder.
Machine Commissioning
Use the 75mm rear adjuster to perfectly set the retract end-position during initial setup, avoiding the need to bolt on external stoppers.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for reliable push-pull cycling in washdown or mildly corrosive manufacturing settings.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75 the Right Cylinder?
Choose this 40mm bore when you need more force than a 32mm cylinder (which provides 402N push at 0.5MPa) but want a lighter footprint than a 63mm option (1559N). The adjustable 925-1000mm window is perfect for product changeovers on long conveyors, whereas a fixed SAI cylinder locks you into one exact dimension. For load-holding without live air pressure, you would need a SAIL or BSAI variant instead of this standard SAIJ.
To match this ISO 15552 interchangeable cylinder exactly, specify: 40mm bore, 1000mm stroke, 75mm adjustment, PT ports, SUS304 (B) rod material, no magnet, and a mounting choice from Basic, FA, LB, TC, FTC, TCM1, or TCM2.
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 SAIJ40BX1000-75 FAQ
At 0.5MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. It can reach up to 1130N push force at 0.9MPa.
The rear adjuster screw lets you shorten the effective travel from the 1000mm nominal stroke down to 925mm. This creates a 925-1000mm usable window for fine-tuning the end position, but it functions as a stop, not a lock.
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