Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100S
The AirTAC SAIJ40X100-100-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. Equipped with a SUS304 stainless steel rod and an integrated magnet, it provides a usable travel window of 0 to 100 mm, allowing the full 100 mm nominal stroke to be dialed back completely to suit variable machine setups. It delivers 628 N of push thrust and 528 N of pull thrust at 0.5 MPa operating pressure.
This adjustable-stroke design lets you fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. The rear adjuster acts strictly as a travel stop for deceleration, not a lock, so it will not hold the load without live air. For position holding without pressure, consider the SAIL or BSAI series. It supports AirTAC CMSE reed and DMSE solid-state sensors via dual-side barrel grooves.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 SAIJ40BX100-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SAIJ40BX100-100S Is Used
Machine Changeover
Dial in the exact retract stop from 0 to 100 mm when switching between product sizes on a packaging line, eliminating the need to physically swap cylinders.
Prototype Positioning
Fine-tune the end-of-stroke position during commissioning to find the optimal dwell distance without machining new external stopper blocks.
Washdown Handling
Leverage the SUS304 stainless steel rod for corrosion resistance in food processing or chemical handling environments requiring frequent washdowns.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100S the Right Cylinder?
Choose this 40 mm bore when an application requires 628 N push force at 0.5 MPa, stepping up from the 32 mm bore (402 N) for greater output, or down from the 50 mm bore (982 N) to save space. The 100 mm adjustment range is ideal for prototyping or product-size changeovers where the exact end position varies. The PT tapered port and G1/4 thread match standard pneumatic layouts. Because the rod is SUS304 stainless steel, it provides excellent corrosion resistance for humid or washdown environments.
To replace an ISO 15552 cylinder, match the 40 mm bore, 100 mm stroke, 100 mm adjustment, PT port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting. The -S magnet enables precise end-of-stroke detection. As the 16 mm rod and M12x1.25 thread carry moderate side loads, external guides are recommended for any unsupported lateral forces.
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 SAIJ40BX100-100S FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 128 kgf.
The rear adjuster screw allows you to trim the effective stroke back from the 100 mm nominal length down to 0 mm. This stopper sets the travel end for deceleration but does not lock or hold the load without continuous air pressure.
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