Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X850-50 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 SAIJ200X850-50
The AirTAC SAIJ200X850-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust up to 28274N at 0.9 MPa. Its defining feature is a 50mm adjustment range that creates an 800-850mm usable travel window, allowing you to dial in the exact retract position without swapping hardware. The extruded aluminum barrel features sensor grooves on both sides, and the robust 40mm carbon steel rod with an M36x2 thread handles high side loads.
This model uses a PT tapered port thread and operates at speeds of 30-500 mm/s. The rear stopper acts purely as a travel end-setter for product changeovers, not a load lock; for dead-air holding, an external pilot-operated check valve or SAIL lock cylinder is required. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50 |
|---|---|
| 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 SAIJ200X850-50
| 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 SAIJ200X850-50 Is Used
Heavy Press Tuning
Fine-tune the 800-850mm retract position on large stamping presses during setup, ensuring precise bottom-dead-center alignment without changing the cylinder.
Pallet Changeover
Adapt large-scale automated conveyor lines to different pallet lengths by simply rotating the rear adjuster screw to shift the end-stop by up to 50mm.
Variable End Stops
Set exact retraction limits on heavy-duty assembly machinery, using the built-in stopper to accommodate multiple product sizes on the same line.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-50 the Right Cylinder?
Choose this 200mm bore when you need maximum push force (15708N at 0.5 MPa), stepping up from a 160mm bore that provides 10053N. The 50mm adjustment window is ideal for heavy machinery requiring variable end-stops during product changeovers, eliminating the need to bolt on external stops or commission a fixed-stroke SAI cylinder. To match this ISO 15552 footprint exactly, specify the 850mm stroke, 50mm adjuster, PT port thread, and your required mounting bracket.
Because the 850mm stroke is long and unsupported, an external guide rail is mandatory to prevent excessive rod side-loading and premature seal wear. Remember that the rear adjuster only trims the travel end; it cannot hold a suspended load without live air pressure.
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 SAIJ200X850-50 FAQ
At 0.9 MPa, the push force increases to 28274N, with a maximum rated force of 3204 kgf at 1.0 MPa.
The rear adjuster screw allows you to trim the effective stroke back by up to 50mm, creating an 800-850mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without continuous air pressure.
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