Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-75
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X850-75 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 SAIJ200X850-75
The AirTAC SAIJ200X850-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust up to 15708N at 0.5 MPa. It features a robust 40mm carbon steel rod and a G3/4 PT tapered port. By integrating an external adjusting stopper, this model provides a usable travel window of 775 to 850mm, allowing you to dial back the nominal 850mm stroke by up to 75mm.
This fine-tuning capability is ideal for heavy-duty commissioning and product changeovers, eliminating the need to swap out the entire cylinder or bolt on external stops. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, meaning CMSE or DMSE electronic switches cannot be used without modification. The rear adjuster acts purely as a travel stop for deceleration, not a lock, so live air is required to hold the load.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-75 |
|---|---|
| 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 SAIJ200X850-75
| 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 SAIJ200X850-75 Is Used
Heavy Press Tuning
Fine-tune the exact bottoming position of a high-tonnage press during initial commissioning, using the 75mm rear adjuster to set the precise 775-850mm travel without changing the cylinder.
Product Size Changeover
Adapt a heavy machinery line to different product heights by simply rotating the rear stopper screw, saving downtime compared to physically replacing a fixed-stroke SAI cylinder.
Long-Stroke Positioning
Move large heavy payloads along an extended 850mm path while retaining the flexibility to back off the end position by up to 75mm for delicate alignment tasks.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-75 the Right Cylinder?
The adjustable 775-850mm window is perfect for variable end-stop positioning during machine setup. If your process requires the load to be held mechanically without continuous air pressure, a standard SAIJ is insufficient; you should explore the SAIL air-released lock or BSAI clamp-lock series instead.
For an exact ISO 15552 replacement match, verify the 200mm bore, 850mm stroke, 75mm adjustment range, G3/4 PT port, and mounting style. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, but omits FB, CA, CB, and CR. Because the 850mm stroke is lengthy, the heavy 40mm rod will still experience deflection under high side loads; always utilize an external guide rail to prevent premature seal wear.
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 SAIJ200X850-75 FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 3204 kgf.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective travel from the nominal 850mm down to a minimum of 775mm. This creates a 775-850mm adjustable window for fine-tuning the retract end position without needing external stops.
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