Airtac SAIJ40 Adjustable Cylinder SAIJ40BX290-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX290-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX290-10
The AirTAC SAIJ40X290-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 290 mm stroke that can be fine-tuned down by up to 10 mm, giving operators a precise 280-290 mm usable travel window during commissioning. Delivering 628 N of push force at 0.5 MPa, it bridges the gap between smaller 32 mm bores and heavier 50 mm units.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and operates with a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, allowing for straightforward positioning of CMSE reed or DMSE electronic solid-state switches if magnetization is added later.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX290-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX290-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 290 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 SAIJ40BX290-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×290 | 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 SAIJ40BX290-10 Is Used
Machine Changeover
Quickly fine-tune the 280-290 mm end-stop during product size changes on a packaging line without swapping out the entire cylinder.
Diversion Gate Setup
Precisely calibrate the extended position of a sorting diverter arm to accommodate varying package widths on the fly.
Press Positioning
Dial in the exact lower limit of a light-duty pressing or staking operation, ensuring consistent contact without rigid hard stops.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX290-10 the Right Cylinder?
Selecting this 40 mm bore makes sense when an application requires more thrust than a 32 mm cylinder (402 N at 0.5 MPa) but lacks the physical space or force demands of a 50 mm unit (982 N at 0.5 MPa). The 10 mm rear adjustment screw is ideal for dialing in exact end positions during machine setup or product changeovers without adding external stopper blocks.
Since the nominal stroke is 290 mm, the M12x1.25 rod thread should be supported by an external guide to prevent excessive side-loading on the piston. Remember that the rear adjuster functions strictly as a travel stop and does not hold the load without live air; for true pneumatic locking, consider the SAIL or BSAI series. This model is dimensionally interchangeable per ISO 15552, utilizing a PT port and the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ40BX290-10 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 879 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 10 mm, creating a 280-290 mm travel window. It acts as a mechanical stop to fine-tune the end position and does not lock the load without continuous 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 SAIJ40BX290-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.