Airtac SAIJ200 Adjustable Cylinder SAIJ200AX900-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX900-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 900mm 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
- Stroke900 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX900-50
The AirTAC SAIJ200X900-50 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty positioning. A rear mechanical stopper trims the nominal 900 mm stroke back by up to 50 mm, providing an exact 850-900 mm usable travel window for fine-tuning machinery at commissioning. Delivering 15708 N of push force at 0.5 MPa, it tackles massive loads without requiring external stops.
This variant features a SUS420J2 stainless steel rod for superior corrosion resistance and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this non-magnetic unit requires adding an -S magnet to support CMSE reed or DMSE electronic switches. The generous 50 mm adjustment range is ideal for accommodating product size changes on a line, ensuring precise end-position tuning without swapping the cylinder.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX900-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX900-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 900 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 SAIJ200AX900-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×900 | 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 SAIJ200AX900-50 Is Used
Heavy Machinery Setup
Dial in the 850-900 mm travel window during heavy press commissioning to achieve precise mechanical contact without fabricating custom external stopper blocks.
Product Size Changeover
Leverage the 50 mm rear adjustment to quickly adapt a large-scale automated line for different product lengths, saving time on physical machine reconfiguration.
Long-Stroke Positioning
Utilize the 15708 N push force to move substantial loads across a 900 mm span, relying on the built-in stopper to define the exact retracted end position.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX900-50 the Right Cylinder?
Select this 200 mm bore cylinder when an application demands extreme thrust, stepping up significantly from a 160 mm bore that yields 10053 N at 0.5 MPa. The adjustable stroke is chosen over a fixed SAI model when exact end-position tuning is necessary during machine setup or product changeover. Because the 900 mm stroke is long, an external guide is strongly recommended to manage side loads and prevent rod binding.
For an exact ISO 15552 replacement match, verify a 200 mm bore, 900 mm stroke, 50 mm adjustment range, PT port threads, and the SUS420J2 (A) rod material. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an external rod lock or the AirTAC BSAI clamp-lock cylinder. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ200AX900-50 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. It can deliver a maximum push force of 28274 N at 0.9 MPa.
The rear adjusting screw acts as a mechanical stopper that shortens the effective travel. For this SAIJ200X900-50 model, you can trim the 900 mm nominal stroke back by up to 50 mm, creating an adjustable 850-900 mm travel window. It is a stop, not a lock, and requires live air to hold position.
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