Airtac SAIJ50 Adjustable Cylinder SAIJ50AX250-10
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX250-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 250mm 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
- Stroke250 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 SAIJ50AX250-10
The AirTAC SAIJ50X250-10 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 16mm piston rod with an M16x1.5 thread. By turning the rear stopper screw, you achieve a usable travel window of 240-250mm, allowing precise end-position tuning without external stops.
This variant features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX250-10 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX250-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 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 SAIJ50AX250-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×250 | 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 SAIJ50AX250-10 Is Used
End-Position Tuning
Dial in the exact 240-250mm travel distance during machine setup to accommodate minor mechanical variations without remounting the cylinder.
Product Changeover
Quickly adjust the retract end-stop by up to 10mm when switching between similar product sizes on a packaging line.
Assembly Pressing
Apply up to 982N of push force at 0.5 MPa for light pressing tasks, using the rear screw to set a precise, repeatable bottom position.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX250-10 the Right Cylinder?
Choose this 50mm bore when you need more thrust than the 40mm version (628N push at 0.5 MPa) but less bulk than the 63mm bore. The 10mm adjustment range is ideal for fine-tuning a 250mm stroke during machine commissioning or product changeover, avoiding the need to swap a fixed-stroke SAI cylinder. For an exact ISO 15552 replacement, match the 50mm bore, 250mm stroke, PT ports, and standard mounting set.
Because the stroke is 250mm, ensure adequate external guiding to prevent excessive side loading on the piston rod. If your application requires the load to be held without continuous air pressure, use an external rod lock or pilot-operated check valve, as the SAIJ adjuster is not a locking device.
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 SAIJ50AX250-10 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The rear stopper screw allows you to shorten the effective stroke by up to 10mm, creating a usable travel window of 240-250mm. This stopper only sets the travel end and does not lock the load without live air.
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 SAIJ50AX250-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.