Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-50 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke850 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-50
The AirTAC SAIJ200X850-50 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications requiring exact end-position tuning. It integrates a rear adjusting screw that establishes a usable travel window between 800 and 850 mm. Delivering a robust 15708 N of push force at 0.5 MPa, this 200 mm bore actuator handles massive loads with precision.
This model features a SUS420J2 stainless steel rod for enhanced corrosion resistance and is equipped with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Operating at speeds of 30-500 mm/s, it provides variable air cushioning at both ends to absorb kinetic energy smoothly.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-50 |
|---|---|
| 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-50
| 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 SAIJ200AX850-50 Is Used
Heavy Press Tuning
Fine-tune the 800-850 mm travel window during setup to perfectly seat heavy pressing tools without machining custom spacers.
Pallet Changeover
Adjust the retract end-stop on the fly to accommodate different pallet sizes moving down a high-mass conveyor line.
Large Assembly Positioning
Leverage the 15708 N push force to shift heavy structural components into exact alignment before fastening.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-50 the Right Cylinder?
Select this 200 mm bore actuator when an application demands immense thrust that smaller bores cannot provide; for context, stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N. The 50 mm rear adjuster is chosen over a fixed-stroke SAI cylinder when you need to dial in the exact retract position during commissioning or product changeover without adding external stops. For an 850 mm stroke, an external guide is strongly recommended to prevent excessive side loading on the rod.
The rear adjuster functions strictly as a travel stop and works alongside the air cushions to decelerate the load, but it does not hold the cylinder in place without live air pressure. If your application requires true load-holding in the event of air loss, consider the AirTAC SAIL pneumatic lock or BSAI clamp-lock series. This cylinder is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: 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 SAIJ200AX850-50 FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 3204 kgf.
The rear adjuster screw allows you to shorten the nominal 850 mm stroke by up to 50 mm, creating a usable travel window of 800 to 850 mm. This stopper decelerates the load at the end of travel but does not lock the cylinder without continuous air pressure.
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