Airtac SAIJ50 Adjustable Cylinder SAIJ50AX140-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX140-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 140mm 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.
- BoreØ50 mm
- Stroke140 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX140-30
The AirTAC SAIJ50X140-30 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 982N of push force at 0.5 MPa and features a 140mm nominal stroke that can be fine-tuned down by up to 30mm, creating a precise 110-140mm usable travel window for commissioning.
This variant is built with a SUS420J2 stainless steel rod for improved corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE or DMSE switches later without altering the mounting footprint.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX140-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX140-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 140 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX140-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×140 | 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 SAIJ50 Adjustable Cylinder SAIJ50AX140-30 Is Used
Machine Changeover
Dial in the 110-140mm travel window during product size changes to set new retract endpoints without physically swapping cylinders on the line.
End-Position Tuning
Fine-tune the final retract position during commissioning to avoid mechanical crashes, using the rear stopper instead of external shims.
Variable Diverter Stops
Adjust the stroke on the fly for pneumatic diverters that must handle different package sizes on a single conveyor belt.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX140-30 the Right Cylinder?
Choose this 50mm bore when an application requires roughly 982N of push force at 0.5 MPa, stepping up from a 40mm bore that provides 628N. The 30mm adjustment range is ideal for product changeovers, letting you shift the retract end-position without swapping the cylinder or adding external stops. For fixed travel needs, a standard SAI cylinder is simpler, but the SAIJ excels when end-stops vary.
When specifying an ISO 15552 replacement, match the 50mm bore, 140mm stroke, 30mm adjustment, PT ports, and SUS420J2 rod material. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true pneumatic locking, consider the SAIL or BSAI series. 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 SAIJ50 Adjustable Cylinder SAIJ50AX140-30 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. It can reach up to 1767N push force at 0.9 MPa.
The rear adjuster screw lets you shorten the 140mm nominal stroke by up to 30mm, providing a usable travel window of 110-140mm. It functions as a mechanical stop 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 are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ50 Adjustable Cylinder SAIJ50AX140-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.