Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X850-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 850mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke850 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 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 SAIJ200 Adjustable Cylinder SAIJ200X850-50S
The AirTAC SAIJ200X850-50-S is a double-acting, double-rod ISO 15552 profile cylinder engineered for heavy-duty tasks requiring exact end-position tuning. Equipped with a rear mechanical stopper, it provides a usable travel window of 800 to 850 mm, enabling you to trim the nominal 850 mm stroke by up to 50 mm during commissioning without adding external stops or swapping the unit.
This profile cylinder features a robust 40 mm carbon steel rod and a G3/4 port to handle high flow demands. The integrated -S magnet supports position sensing via AirTAC CMSE reed switches or DMSE solid-state electronic sensors. It utilizes a reduced mounting interface subset including Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets to streamline heavy-duty installations.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 850 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×850 | 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 SAIJ200X850-50S Is Used
Heavy Press Tonnage Tuning
Dial in the exact 800 to 850 mm end-of-stroke position during heavy press commissioning to accommodate varying material thicknesses without mechanical rework.
Pallet Size Changeovers
Quickly adapt a conveyor end-stop for different pallet lengths by adjusting the rear screw up to 50 mm, drastically reducing automated line changeover times.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50S the Right Cylinder?
Selecting this 200 mm bore model is ideal when an application requires up to 3204 kgf (at 1.0 MPa) of force combined with on-the-fly travel adjustments. The 50 mm adjustment range is perfect for accommodating product size variations on a production line without physically replacing the cylinder.
Because the 850 mm stroke is substantial, an external guide rail is strongly recommended to prevent excessive side-load wear on the 40 mm carbon steel rod and front cap. Remember that the rear adjuster acts strictly as a travel stop, not a locking device; this cylinder cannot hold a load without live air pressure. For fail-safe load holding, integrate an external pilot-operated check valve or utilize an AirTAC SAIL or BSAI clamping cylinder. To ensure exact ISO 15552 interchangeability, match the 850 mm stroke, 50 mm adjuster, PT tapered G3/4 ports, and the -S magnet specification.
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 SAIJ200X850-50S FAQ
Its maximum thrust rating is 3204 kgf when operated at the 1.0 MPa pressure limit.
The rear mechanical stopper allows you to shorten the effective travel from the nominal 850 mm down to 800 mm. This creates a 50 mm adjustable window for fine-tuning the retract end position during setup or product changeovers without replacing the cylinder.
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