Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10
The AirTAC SAIJ40X375-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 365 to 375 mm, allowing you to dial back the end position by up to 10 mm during commissioning. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance.
This unit features a PT tapered G1/4 port and relies on variable air cushions at both ends to manage end-of-stroke deceleration. The rear adjuster acts purely as a mechanical stop and does not lock the load without live air pressure. For position holding without continuous air, an external pilot-operated check valve or a SAIL lock cylinder is required.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 375 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 SAIJ40BX375-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×375 | 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 SAIJ40BX375-10 Is Used
Machine Setup Fine-Tuning
Dial in the exact 365 to 375 mm end position during commissioning without swapping out the entire cylinder or adding external stopper blocks.
Product Changeover Stops
Quickly adjust the stroke by up to 10 mm on packaging lines when handling slightly different package lengths or widths.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for pushing and pulling tasks in environments requiring high corrosion resistance.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10 the Right Cylinder?
Select this 40 mm bore cylinder when your application requires 628 N push force at 0.5 MPa and a fine-tuned end stop. If your setup needs less force, stepping down to a 32 mm bore yields 402 N, while upgrading to a 50 mm bore provides 982 N. The 10 mm adjustment window is ideal for product changeovers where a fixed SAI cylinder would require external shims.
Because the 375 mm stroke is relatively long, the 16 mm rod and M12x1.25 thread will experience higher side loads; always use an external guide to prevent binding. This SKU is dimensionally interchangeable per ISO 15552 and accepts Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts (omitting FB, CA, CB, and CR). It ships without a magnet, so reed or solid-state sensors cannot be fitted.
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 SAIJ40BX375-10 FAQ
The rear adjuster screw lets you shorten the nominal 375 mm stroke by up to 10 mm, creating a 365 to 375 mm travel window. It acts as a mechanical stop to fine-tune the retract end position and does not function as a load lock.
At 0.5 MPa operating pressure, it provides 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, the push force increases to 125 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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