Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 185mm 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
- Stroke185 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-20
The AirTAC SAIJ200X185-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 165 to 185 mm. It delivers massive thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa, making it suitable for heavy-duty operations. The piston rod is constructed from SUS420J2 stainless steel, offering enhanced durability and corrosion resistance compared to standard carbon steel.
This model features PT G3/4 ports and variable air cushions at both ends to manage kinetic energy. The rear adjustment screw acts purely as a travel stop to fine-tune the retract position without adding external physical stops. It is not a locking device, so live air pressure is required to hold the load securely.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 185 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 SAIJ200AX185-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×185 | 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 SAIJ200AX185-20 Is Used
Heavy Press Tuning
Dial in the exact 165 to 185 mm retract position during heavy press setup without swapping cylinders or adding external mechanical stops.
Product Changeover
Adjust the end stop quickly on the fly when shifting the production line to accommodate a slightly shorter product format.
Heavy-Duty Forming
Leverage the 15708 N push force for large-scale metal bending or forming tasks that require precise depth control.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-20 the Right Cylinder?
Select this 200 mm bore cylinder when your application requires up to 15708 N of push force at 0.5 MPa and precise end-position tuning during commissioning. If your force requirements are lower, stepping down to a 160 mm bore yields 10053 N of push force, which may suffice and save space. The adjustable stroke is ideal for product changeovers where the exact end position varies slightly, unlike a fixed-stroke SAI cylinder. For drop-in compatibility, match the 185 mm stroke, 20 mm adjustment, PT G3/4 ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this set omits FB, CA, CB, and CR mounts.
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 SAIJ200AX185-20 FAQ
At 0.5 MPa, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At 0.7 MPa, the push force increases to 21991 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, creating a usable travel window of 165 to 185 mm. This stopper only sets the travel end and does not lock the load without live air pressure.
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