Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-100
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-100 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 SAIJ200BX185-100
The AirTAC SAIJ200X185-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to fine-tune the effective travel anywhere within an 85-185 mm window. Equipped with a 200 mm bore, it delivers immense thrust, generating 21991 N of push force and 15080 N of pull force at 0.7 MPa. The piston rod is constructed from SUS304 stainless steel, providing excellent corrosion resistance for harsh or washdown environments.
This model features tapered PT ports and operates at speeds of 30-500 mm/s. The rear adjustment screw functions purely as a mechanical stop to set the retraction end-position during commissioning; it does not lock the load. If your process requires true load-holding without live air pressure, you should integrate an external pilot-operated check valve or select the related AirTAC SAIL or BSAI series.
Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-100 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-100 |
|---|---|
| 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 SAIJ200BX185-100
| 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 SAIJ200BX185-100 Is Used
Heavy Pressing & Forming
Dial in the exact 85-185 mm retraction distance for large metal forming or pressing operations, ensuring precise end-position tuning during machine setup.
Variable Product Changeover
Quickly adjust the stroke length on automated lines to handle different product dimensions without disassembling the pneumatic circuit or swapping cylinders.
Large Assembly Jigs
Utilize the 21991 N of thrust at 0.7 MPa to drive heavy assembly tooling, relying on the rear stopper to set safe and repeatable travel limits.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200BX185-100 the Right Cylinder?
When sizing this actuator, stepping down to a 160 mm bore yields 14074 N of push force at 0.7 MPa, which is often sufficient for lighter duties while saving physical envelope space. The SAIJ200X185-100 is specifically chosen over a fixed-stroke SAI cylinder when a machine requires variable end-stops to accommodate product size changeovers without physically swapping the cylinder or adding external stopper blocks.
To replace this ISO 15552 cylinder accurately, match the 200 mm bore, 185 mm nominal stroke, 100 mm adjustment range, PT ports, SUS304 (B) rod material, and the basic mounting style. Note that the SAIJ mounting set omits the FB, CA, CB, and CR variants, offering only Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. Because this is a large-bore actuator, ensure your framework handles the dynamic mass, and always guide the load externally to prevent side-load damage to the rod.
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 SAIJ200BX185-100 FAQ
At 0.7 MPa operating pressure, this 200 mm bore cylinder provides 21991 N of push force and 15080 N of pull force. The maximum push force is 28274 N at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you trim the effective stroke back from the 185 mm nominal maximum down to an 85 mm minimum. It sets the travel end-point during commissioning but does not lock the load without live air.
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