Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-30
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-30 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 SAIJ200AX185-30
The AirTAC SAIJ200X185-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position. It provides a usable travel window of 155-185 mm, letting you dial back the nominal 185 mm stroke by up to 30 mm during commissioning. Delivering 15708 N of push force at 0.5 MPa, it handles heavy loads while maintaining standard ISO 15552 mounting dimensions.
This configuration uses a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the internal magnet. The rear adjuster acts strictly as a travel stop to set deceleration and end limits, not as a lock to hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-30 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-30 |
|---|---|
| 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 SAIJ200AX185-30
| 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 SAIJ200AX185-30 Is Used
Heavy Press Fine-Tuning
Dial in the exact 155-185 mm end-stop during setup to accommodate material thickness variations without changing the cylinder.
Product Size Changeover
Quickly adjust the stroke end position on packaging lines when switching to different product lengths, avoiding mechanical rebuilds.
Large Fixture Positioning
Position heavy industrial fixtures precisely, using the 30 mm adjustment range to overcome minor mechanical tolerance stack-ups at commissioning.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-30 the Right Cylinder?
Choose this 200 mm bore cylinder when your application requires 15708 N of push thrust at 0.5 MPa (or up to 3204 kgf at 1.0 MPa) and on-the-fly end-position tweaking. If you need less force, stepping down to a 160 mm bore yields 10053 N of push force at 0.5 MPa. The adjustable stroke is ideal for product changeovers on a line where exact end-stops vary, eliminating the need to swap out a fixed-stroke SAI cylinder or bolt on external stops.
Because this is a 200 mm bore unit operating with a 185 mm stroke, the robust 40 mm rod and M36x2 thread handle high side loads, but any long unsupported overhang still requires an external guide. For holding loads without live air, select a SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead, as the SAIJ rear adjuster and air cushions only manage travel ends. To match this ISO 15552 replacement, verify the 200 mm bore, 185 mm stroke, 30 mm adjustment, PT G3/4 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and no magnet.
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 SAIJ200AX185-30 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At its maximum 1.0 MPa operating pressure, it delivers up to 3204 kgf.
The rear adjuster screw lets you shorten the nominal 185 mm stroke by up to 30 mm, creating a usable travel window of 155-185 mm. This stopper fine-tunes the retract end position but does not lock or hold the load without live air pressure.
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