Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-40
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-40 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
- 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 SAIJ50BX290-40
The AirTAC SAIJ50X290-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 250-290 mm usable travel window from the 290 mm nominal stroke. Delivering 982 N of push force at 0.5 MPa, it suits medium-duty handling. This variant uses a SUS304 stainless steel rod for corrosion resistance and PT tapered ports.
The external adjuster allows precise end-position tuning at commissioning without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-40 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-40 |
|---|---|
| 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 SAIJ50BX290-40
| 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 SAIJ50BX290-40 Is Used
Machine Setup Tuning
Fine-tune the 250-290 mm end position during commissioning to perfectly align packaging folds without machining external stop blocks.
Product Size Changeover
Quickly adjust the retract stop on a packaging conveyor when handling different carton lengths, saving changeover time.
Variable End-Stop Forming
Dial in the exact material press depth for varying thicknesses on an assembly line, using the 40 mm adjustment range.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX290-40 the Right Cylinder?
Choose this 50 mm bore cylinder when you need 982 N push force at 0.5 MPa, stepping up from a 40 mm bore that provides 628 N. The adjustable stroke is ideal for product changeovers on a line, letting you dial back the travel by up to 40 mm without swapping the cylinder. For fixed travel, a standard SAI cylinder is simpler.
Because the 290 mm stroke is long, the 20 mm rod diameter and M16x1.5 thread still require an external guide to handle side loads. The rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. Speed ranges from 30-800 mm/s.
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 SAIJ50BX290-40 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 200 kgf.
The rear adjuster screw lets you shorten the effective stroke by up to 40 mm, creating a 250-290 mm travel window. It acts as a physical stop to tune the retract position and is not a lock; it cannot hold the load without live air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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