Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 300mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-50S
The AirTAC SAIJ200X300-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 250 to 300 mm, allowing you to dial back the nominal stroke by up to 50 mm during commissioning without adding external stops. As the largest bore in the series, it delivers massive thrust, pushing 28274 N at 0.9 MPa.
Built with a SUS420J2 stainless steel rod (code A) for corrosion resistance, this unit includes a magnet for position sensing. It uses PT tapered G3/4 ports and runs at 30-500 mm/s. The rear adjuster acts purely as a travel stop to fine-tune end positions; it is not a lock, so you need live air or an external pilot-operated check valve to hold loads.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SAIJ200 Adjustable Cylinder SAIJ200AX300-50S Is Used
Heavy Pressing
Dial in the exact 250-300 mm travel window for high-force pressing operations, ensuring perfect contact depth during product changeovers.
Large Assembly Jigs
Fine-tune the end-stop on massive assembly jigs without swapping out the entire cylinder or bolting on external stopper blocks.
Heavy Material Diverters
Adjust the retract stroke by up to 50 mm to accommodate varying pallet sizes on heavy-duty conveyor lines.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-50S the Right Cylinder?
Select this 200 mm bore cylinder when your application requires extreme force, such as the 15708 N push at 0.5 MPa, and on-the-fly end-position tuning. Stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N, so only downsize if your load allows it. Choose the adjustable SAIJ over a fixed SAI when machine setups experience frequent product-size changeovers that need variable end-stops.
For ISO 15552 replacement matching, specify a 200 mm bore, 300 mm stroke, 50 mm adjustment, PT G3/4 ports, and the -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is 300 mm, the 40 mm rod diameter requires an external guide to prevent excessive side-loading on the long unsupported travel.
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 SAIJ200 Adjustable Cylinder SAIJ200AX300-50S FAQ
At 0.9 MPa, this 200 mm bore cylinder generates a push force of 28274 N and a pull force of 15080 N. At 0.5 MPa, it pushes 15708 N.
The rear adjuster screw acts as a travel stop, letting you shorten the effective stroke from 300 mm down to 250 mm. It only sets the end position and does not lock the load without live air.
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