Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-40S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X850-40S 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 SAIJ200X850-40S
The AirTAC SAIJ200X850-40-S is a double-acting, double-rod ISO 15552 profile cylinder engineered for heavy-duty applications. It features a rear mechanical adjuster that allows you to dial back the nominal 850 mm stroke by up to 40 mm, creating a precise usable travel window of 810-850 mm.
This variant includes a standard piston magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors, which mount cleanly into the extruded aluminum barrel's dual sensor grooves. The robust 40 mm carbon steel rod and M36x2 thread provide exceptional rigidity, while the integrated adjustable air cushions at both ends absorb the massive kinetic energy generated by this bore's 30-500 mm/s operating speed range.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-40S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-40S |
|---|---|
| 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 SAIJ200X850-40S
| 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 SAIJ200X850-40S Is Used
Heavy Pressing Operations
Dial in the exact 810-850 mm travel window to ensure precise contact pressure during heavy-duty forming and stamping tasks without repositioning the tooling.
Automated Assembly Lines
Fine-tune the end-stop position during machine setup or product changeovers, allowing quick adjustments to accommodate varying large-component dimensions.
Material Handling Stops
Adjust the retract position on the fly to handle different pallet sizes on heavy-load conveyors, ensuring accurate positioning without external mechanical stops.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-40S the Right Cylinder?
An adjustable-stroke cylinder is selected over a fixed SAI model when you need to fine-tune the retract end-position during commissioning or accommodate slight product size variations without adding external stoppers.
Because the stroke is 850 mm, the long unsupported rod is susceptible to side-loading and sagging; an external guide rail is strongly recommended to prevent premature seal wear. Note that the rear adjuster acts only as a travel stop and the air cushions only decelerate the load—neither will hold the load without live air pressure. For true fail-safe load holding, consider the SAIL air-released lock or BSAI clamp-lock series. This SAIJ model uses a PT tapered port and supports a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR options.
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 SAIJ200X850-40S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective stroke by up to 40 mm. This provides a usable travel window of 810-850 mm, allowing you to fine-tune the end position at commissioning without swapping the cylinder.
At the maximum operating pressure of 1.0 MPa, this 200 mm bore cylinder generates up to 3204 kgf.
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Standard models are processed and dispatched in 3-5 business days.
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