Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-40S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke290 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-40S
The AirTAC SAIJ50X290-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, allowing you to fine-tune the effective travel down from 290 mm to a 250-290 mm window during commissioning. It delivers a robust 982 N push force at 0.5 MPa, making it well-suited for moderate-load positioning tasks.
This SKU ships with a SUS420J2 stainless steel piston rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel integrates sensor grooves on both sides, and the rear adjuster acts purely as a travel stop to dial in end positions without adding external stops.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-40S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 290 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 SAIJ50AX290-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | 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 SAIJ50 Adjustable Cylinder SAIJ50AX290-40S Is Used
Machine Changeover
Dial in the 250-290 mm travel window during product size changes without physically swapping out the entire cylinder assembly.
End-Position Tuning
Use the rear stopper to precisely set the retract distance, hitting a target location while the air cushion manages deceleration.
Variable End Stops
Accommodate varying package sizes on a line by adjusting the effective stroke back by up to 40 mm as needed.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-40S the Right Cylinder?
Choose this 50 mm bore when a 40 mm bore falls short of the 628 N push force at 0.5 MPa, but you want to avoid the larger footprint of a 63 mm unit. The adjustable stroke is ideal for product changeovers where the end-stop needs slight trimming rather than swapping a fixed-stroke SAI cylinder. Because the rear adjuster and air cushions only decelerate the load, this plain SAIJ cannot hold position without live air; for true load-holding, select an SAIL or BSAI model. At 290 mm stroke, the 20 mm piston rod and M16x1.5 thread handle moderate side loads, but long unsupported strokes still require an external guide. To match this ISO 15552 replacement, verify the 290 mm stroke, 40 mm adjuster, PT tapered port, and -S magnet.
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 SAIJ50AX290-40S FAQ
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 200 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 290 mm nominal stroke by up to 40 mm, creating a usable travel window of 250-290 mm. It sets the end position but 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 SAIJ50 Adjustable Cylinder SAIJ50AX290-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.