Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40S 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 SAIJ40BX1000-40S
The AirTAC SAIJ40X1000-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 1000 mm stroke that can be fine-tuned backward by up to 40 mm, creating a usable travel window of 960 to 1000 mm. Delivering 628 N of push force at 0.5 MPa, it operates at speeds of 30-800 mm/s and uses a PT G1/4 port. This variant includes a SUS304 stainless steel rod and a magnet for position sensing.
Because the barrel is an extruded aluminum profile rather than a tie-rod design, it features integrated sensor grooves on both sides for CMSE reed and DMSE electronic switches. The rear adjustment screw functions purely as a mechanical stop to dial in the exact end position during commissioning; it does not lock or hold the load without live air pressure. For applications requiring true load holding, AirTAC SAIL or BSAI series cylinders are recommended.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40S |
|---|---|
| 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 SAIJ40BX1000-40S
| 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 SAIJ40BX1000-40S Is Used
Machine Setup Tuning
Dial in the exact 960-1000 mm end position during commissioning without adding external stops or changing the cylinder.
Product Changeover
Adjust the travel window on packaging lines to handle different carton sizes quickly and accurately.
Variable End Stops
Use the rear mechanical stopper to fine-tune the retract position for multi-format production lines.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-40S the Right Cylinder?
Choose this 40 mm bore when 628 N of push force at 0.5 MPa is sufficient, stepping up to the 50 mm bore (982 N) only if your payload increases. An adjustable stroke is ideal for machine setups requiring variable end stops or product changeovers without swapping hardware. Unlike a fixed SAI cylinder, the rear screw allows on-the-fly end-position tuning. At a 1000 mm stroke, the 16 mm rod and M12x1.25 thread provide decent side-load resistance, but an external guide is strongly recommended for unsupported loads. This SAIJ configuration uses PT tapered ports, a SUS304 stainless steel rod, and includes a magnet for CMSE/DMSE sensors. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ40BX1000-40S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It can deliver up to 1130 N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm. This gives the 1000 mm nominal stroke a usable travel window of 960 to 1000 mm, which can be tuned during setup. The adjuster acts only as a stop and does not hold the load without air pressure.
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