Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-20
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 230mm 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
- Stroke230 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-20
The AirTAC SAIJ40X230-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 230 mm nominal stroke that can be dialed back by up to 20 mm, creating a precise 210-230 mm usable travel window for commissioning without external stops. Driven by a 16 mm carbon steel rod, it delivers 628 N of push force at 0.5 MPa and uses G1/4 PT tapered ports.
This variant features a SUS304 stainless steel rod for superior corrosion resistance in humid or washdown environments. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE solid-state switches. Air cushions at both ends manage deceleration, while the rear stopper allows fine end-position tuning during product changeovers.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-20 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 230 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 SAIJ40BX230-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×230 | 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 SAIJ40BX230-20 Is Used
Variable End-Stop Tuning
Dial in the exact 210 to 230 mm end-position during machine commissioning to accommodate slight mechanical variations without adding external stopper blocks.
Product Size Changeover
Quickly adjust the retract stop by up to 20 mm on packaging lines when switching between different package lengths, minimizing downtime between production runs.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod for light-duty positioning tasks in environments requiring higher corrosion resistance than standard carbon steel.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-20 the Right Cylinder?
Choose this 40 mm bore when an application requires around 628 N push force at 0.5 MPa, stepping up from a 32 mm bore that provides 402 N, or down from a 63 mm bore yielding 1559 N. The adjustable 210-230 mm travel window is ideal for machinery requiring variable end-stops or frequent product-size changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder.
As an ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders. Specify the 40 mm bore, 230 mm stroke, 20 mm adjustment, PT G1/4 port, and SUS304 (B) rod material. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true load-holding without pressure, use an SAIL air-released lock, BSAI clamp-lock, or external rod lock. Since the 230 mm stroke is relatively long, use an external guide to prevent side-loading damage to the rod.
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 SAIJ40BX230-20 FAQ
At 0.5 MPa operating pressure, the 40 mm bore provides 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 128 kgf.
A rear-mounted external screw acts as a mechanical stop, allowing you to shorten the effective stroke from 230 mm down to a minimum of 210 mm. This adjuster sets the travel end and must not be used as a load-holding brake or lock.
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 SAIJ40BX230-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.