Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-20 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
- 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 SAIJ200BX185-20
The AirTAC SAIJ200X185-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 165-185 mm usable travel window, allowing you to dial back the nominal 185 mm stroke by up to 20 mm during commissioning. Delivering massive thrust, it pushes 28274 N at 0.9 MPa and pulls 15080 N at 1.0 MPa.
This heavy-duty actuator uses a G3/4 PT tapered port and a durable SUS304 stainless steel rod. Unlike fixed-stroke actuators, the external rear stopper lets you fine-tune the retract end-position without swapping the cylinder or adding external stops. The rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-20 |
|---|---|
| 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 SAIJ200BX185-20
| 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 SAIJ200BX185-20 Is Used
Heavy Press Tuning
Fine-tune the retract position of high-tonnage press operations by up to 20 mm during setup, ensuring perfect alignment without replacing the cylinder.
Product Changeover
Adjust the end-stop on the fly when switching product sizes on a heavy-duty line, using the 165-185 mm travel window to adapt to new formats.
Large Jig Alignment
Dial in the exact end-position on massive fabrication jigs where a fixed 185 mm stroke would require external stops to achieve the precise 165 mm retraction.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-20 the Right Cylinder?
Choose this 200 mm bore when maximum output is required, as it generates 21991 N of push force at 0.7 MPa. If you need less force, stepping down to a 160 mm bore yields 14074 N at 0.7 MPa. The adjustable stroke is ideal for product changeovers, letting you shift the end-stop by 20 mm without mechanical modifications. For load-holding without live air, select a SAIL or BSAI cylinder instead, as this adjuster is not a lock.
This model uses PT ports, a SUS304 rod, no magnet, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 185 mm stroke is substantial, the 40 mm rod and M36x2 thread handle high stress, but an external guide is recommended for unsupported loads to manage side-load forces.
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 SAIJ200BX185-20 FAQ
At 0.9 MPa, this 200 mm bore cylinder provides 28274 N of push force and 22680 N of pull force. At the maximum 1.0 MPa operating pressure, it delivers 3204 kgf of push force.
The rear adjuster screw lets you shorten the 185 mm nominal stroke by up to 20 mm, creating a 165-185 mm usable travel window. It acts as a mechanical stop to set the end position and is not a lock.
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