Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-40
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X850-40 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 SAIJ200X850-40
The AirTAC SAIJ200X850-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that enables a usable travel window of 810 to 850 mm. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback integration.
Equipped with a robust 40 mm carbon steel piston rod and a G3/4 port, this model is built for high structural rigidity. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning without requiring external stopper blocks. It is not a locking device, meaning the cylinder cannot hold a load safely without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-40 |
|---|---|
| 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 SAIJ200X850-40
| 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 SAIJ200X850-40 Is Used
Heavy Press Fine-Tuning
Dial in the exact 810 to 850 mm retract position during heavy press commissioning without swapping out the entire actuator or adding external mechanical stops.
Product Size Changeover
Quickly adapt the end-of-stroke position on a heavy machinery line when transitioning between different large product dimensions.
Large Assembly Positioning
Provides immense thrust for positioning bulky components, using the rear screw to set precise deceleration limits for varying batch sizes.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-40 the Right Cylinder?
The 40 mm adjustable stroke is selected when you need precise variable end-stops for product changeovers rather than relying on a fixed-stroke SAI cylinder.
Because the 850 mm stroke is substantial, an external guide is strongly recommended to prevent side-loading damage to the rod and seals. For any load-holding requirements without continuous air pressure, this cylinder's adjuster will not suffice; you must integrate an external rod lock or pilot-operated check valve, or switch to an AirTAC SAIL or BSAI series. This model uses a PT tapered port thread and supports a mounting set 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 SAIJ200X850-40 FAQ
It reaches a maximum of 3204 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the nominal 850 mm stroke by up to 40 mm, creating an adjustable travel window between 810 and 850 mm. This stopper fine-tunes the end position but does not lock or hold the load without live air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
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