Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-75S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X850-75S 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 SAIJ200X850-75S
The AirTAC SAIJ200X850-75-S is a double-acting, double-rod profile cylinder dimensionally interchangeable per ISO 15552. It features a built-in rear stroke adjuster that creates a usable travel window of 775 to 850 mm, allowing you to fine-tune the retract end position at commissioning without swapping the cylinder. Equipped with a magnet for position sensing, it works seamlessly with AirTAC CMSE reed and DMSE electronic sensors.
The carbon steel rod and M36x2 thread provide high structural rigidity, while the extruded aluminum barrel includes sensor grooves on both sides. The rear adjuster acts strictly as a travel stop to set the end position, not as a lock, so live air is required to hold the load.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-75S |
|---|---|
| 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 SAIJ200X850-75S
| 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 SAIJ200X850-75S Is Used
Heavy Press Fine-Tuning
Dial in the exact 775-850 mm retract position on heavy stamping presses during setup, ensuring precise contact without machining custom spacers.
Large Product Changeover
Quickly adapt the end-stop distance on packaging lines handling oversized products, using the rear adjuster to switch travel limits on the fly.
Automated Assembly Stops
Provide adjustable physical stops for large automated assembly fixtures, allowing operators to trim the 850 mm stroke by up to 75 mm as product dimensions vary.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-75S the Right Cylinder?
Choose this adjustable-stroke model when an application requires precise end-position tuning during machine setup or product changeover, avoiding the need to bolt on external stops or order a custom fixed-stroke SAI cylinder. Because this cylinder has a long 850 mm stroke, you must use an external guide to support the load and prevent excessive side-load wear on the rod seals.
For an exact ISO 15552 replacement match, verify the 200 mm bore, 850 mm stroke, 75 mm adjustment range, PT tapered ports, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles. Remember that a plain SAIJ does not hold its position without live air pressure; for fail-safe load holding, use an external pilot-operated check valve or select a BSAI clamp-lock 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 SAIJ200X850-75S FAQ
At the maximum operating pressure of 1.0 MPa, it reaches a push force of 3204 kgf.
The rear adjuster acts as an external stop that lets you shorten the effective travel from 850 mm down to 775 mm. It sets the end position during commissioning but does not lock the load, requiring live air to hold position.
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