Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-50
The AirTAC SAIJ200X280-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust for heavy-duty automation. It provides a usable travel window of 230 to 280 mm, allowing you to dial back the nominal 280 mm stroke by up to 50 mm during commissioning. At 0.5 MPa it pushes with 15708 N and pulls with 15080 N, scaling up to 21991 N of push force at 0.7 MPa.
This unit features a SUS420J2 stainless steel rod (material code A) for enhanced durability against moisture and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. The rear screw acts purely as a travel stop to fine-tune the end position without needing external stops.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 280 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 SAIJ200AX280-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×280 | 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 SAIJ200AX280-50 Is Used
Heavy Machinery Setup
Fine-tune the 230 to 280 mm travel window during heavy equipment commissioning to achieve precise mechanical positioning without machining new stop blocks.
Product Line Changeover
Quickly adjust the end-of-stroke position by up to 50 mm when switching between large product sizes on a high-thrust assembly line.
Press Positioning
Dial in the exact bottoming position of a heavy press operation, relying on the 21991 N push force at 0.7 MPa to execute the work reliably.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-50 the Right Cylinder?
Choose this 200 mm bore when 160 mm (10053 N push at 0.5 MPa) cannot move your load, as the SAIJ200X280-50 outputs 15708 N at the same pressure. An adjustable stroke is ideal for product changeovers where the exact end-of-travel position varies by up to 50 mm, eliminating the need to physically swap cylinders. For a fixed-position application, a standard SAI cylinder would suffice.
To match this cylinder for an ISO 15552 replacement, specify the 200 mm bore, 280 mm stroke, 50 mm adjustment, PT ports, and the SUS420J2 rod. Since the stroke is 280 mm, ensure external guiding is used to prevent excessive side-loading on the rod. Remember that the rear adjuster is a stop, not a lock; for load-holding without live air, select an SAIL or BSAI cylinder.
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 SAIJ200AX280-50 FAQ
At 0.5 MPa, it provides 15708 N of push force and 15080 N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 21991 N.
The rear adjuster screw lets you shorten the effective travel from the nominal 280 mm down to 230 mm. This creates a 230 to 280 mm adjustable window, allowing you to set the exact retract end-position during setup without changing the cylinder.
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