Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75S 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 SAIJ40BX1000-75S
The AirTAC SAIJ40X1000-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 879N of push force at 0.7MPa and features a 1000mm nominal stroke that can be fine-tuned down by up to 75mm, creating a precise 925-1000mm usable travel window. This built-in adjustability allows you to dial in the exact retract end-position during commissioning without swapping out the entire unit.
This specific configuration includes a SUS304 stainless steel rod (code B) for superior corrosion resistance and PT tapered port threads. The extruded aluminum barrel features sensor grooves on both sides, and because this model includes a magnet (-S), it supports AirTAC CMSE reed and DMSE electronic solid-state switches for precise position feedback. The rear stopper acts purely as a travel end-deceleration point, not a lock, so live air is required to hold the load.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75S |
|---|---|
| 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 SAIJ40BX1000-75S
| 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 SAIJ40BX1000-75S Is Used
Product Changeover Diverter
Quickly reconfigure a conveyor sorting arm by dialing the retract stroke back from 1000mm to 925mm to accommodate different package lengths without changing hardware.
Long-Stroke Machine Setup
Fine-tune the end-of-travel position on a 1000mm stroke assembly station during initial commissioning, absorbing mechanical tolerances via the 75mm rear adjuster.
Adjustable Forming Stop
Set precise material positioning limits on a long-bed manufacturing line, using the variable end-stop to adapt the 925-1000mm travel window for various part geometries.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-75S the Right Cylinder?
Choose this 40mm bore when you need 879N of push force at 0.7MPa; stepping down to a 32mm bore drops that output to 563N, while stepping up to a 50mm bore increases it to 1374N. An adjustable stroke is ideal for machines requiring product-size changeovers, letting you set a variable end-stop without adding external physical stops. If you need to hold a load vertically without continuous air pressure, a standard SAIJ will not suffice—you should look at the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
When replacing an ISO 15552 cylinder, match the 40mm bore, 1000mm stroke, 75mm adjustment range, PT port threads, and the -S magnet requirement. Because the stroke is 1000mm, the 16mm rod and M12x1.25 rod thread will experience amplified side-loading leverage; even with larger rod diameters, an external guide rail is highly recommended to prevent premature seal wear. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
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 SAIJ40BX1000-75S FAQ
At 0.7MPa operating pressure, this 40mm bore cylinder provides 879N of push force and 528N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 128kgf.
The rear adjusting screw acts as a mechanical stopper that lets you trim the effective stroke back by up to 75mm, providing a usable travel window between 925mm and 1000mm. It only sets the travel end and does not lock the load without live air pressure.
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