Airtac SAIJ40 Adjustable Cylinder SAIJ40BX240-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX240-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 240mm 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
- Stroke240 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX240-10
The AirTAC SAIJ40X240-10 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 240 mm nominal stroke that can be fine-tuned down by up to 10 mm, creating a precise 230-240 mm usable travel window. Delivering 879 N of push force at 0.7 MPa, it handles mid-range actuation with ease.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE or DMSE switches if position feedback is needed later. Because the rear adjuster acts purely as a travel stop, it cannot hold a load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX240-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX240-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 240 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 SAIJ40BX240-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×240 | 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 SAIJ40BX240-10 Is Used
Commissioning Calibration
Fine-tune the 230-240 mm travel window during machine setup to achieve exact end-of-stroke positioning without adding external stopper blocks.
Product Changeover
Quickly adjust the rear stopper by up to 10 mm to accommodate slight variations in product sizes on a fast-paced packaging line.
Corrosive Environments
Leverage the SUS304 stainless steel rod for mid-force actuation tasks in washdown or mildly corrosive manufacturing settings.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX240-10 the Right Cylinder?
Choose this 40 mm bore when a 32 mm cylinder (providing 563 N push at 0.7 MPa) lacks thrust, but a 63 mm bore is unnecessarily large. The 10 mm adjustment range is perfect for dialing in exact end positions during machine commissioning or product changeovers, eliminating the need to swap out a fixed-stroke SAI cylinder. To match this ISO 15552 replacement exactly, specify the 40 mm bore, 240 mm stroke, PT ports, and the SUS304 (B) rod material.
With a 240 mm stroke, the 16 mm rod carries moderate side loads, but for heavy off-center loads, an external guide is still recommended. If your application requires the load to be held mechanically without continuous air pressure, pair this cylinder with an external rod lock or consider the SAIL or BSAI series instead. Mounting options include 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 SAIJ40BX240-10 FAQ
At 0.7 MPa operating pressure, this 40 mm bore cylinder provides 879 N of push force and 528 N of pull force. It can reach a maximum push force of 1130 N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 240 mm nominal stroke down to 230 mm. It only decelerates and sets the end position; it does not lock the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX240-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.