Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30 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 SAIJ200AX850-30
The AirTAC SAIJ200X850-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window between 820 and 850 mm. It delivers massive thrust, pushing 21991 N at 0.7 MPa and 28274 N at 0.9 MPa, making it suitable for heavy-duty industrial positioning. The extruded aluminum barrel includes sensor grooves on both sides, though this specific configuration omits the magnet.
This model uses a SUS420J2 stainless steel rod (code A) and PT tapered ports. The rear adjuster acts purely as a mechanical stop to dial in the exact end position during commissioning or product changeovers. It does not lock or hold the load without continuous air pressure; for fail-safe load holding, consider the SAIL or BSAI series instead.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30 |
|---|---|
| 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 SAIJ200AX850-30
| 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 SAIJ200AX850-30 Is Used
Heavy Press Tuning
Dial in the exact 820-850 mm end position for large metal forming or stamping presses during initial setup without machining external stopper blocks.
Pallet Changeover
Quickly adjust the stroke by up to 30 mm to accommodate different pallet sizes on a heavy-duty transfer line, minimizing downtime between product runs.
Large Fixture Actuation
Move massive industrial fixtures into place with 21991 N of thrust at 0.7 MPa, relying on the rear stopper to set the precise retracted position.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30 the Right Cylinder?
Choose this 200 mm bore cylinder when your application requires up to 28274 N of push force at 0.9 MPa and a variable end-stop. If you need less force, stepping down to a 160 mm bore yields 14074 N at 0.7 MPa. The adjustable stroke is highly beneficial on lines handling varying product sizes, allowing you to trim the travel by up to 30 mm without swapping the cylinder or adding external stops. Because the 850 mm stroke is long and the 40 mm rod is heavy, an external guide is strongly recommended to prevent excessive side-loading on the rod and front cap.
When matching ISO 15552 interchangeability, verify the 850 mm stroke, 30 mm adjustment range, G3/4 port, PT thread, and SUS420J2 rod material. The available mounting set includes 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 SAIJ200AX850-30 FAQ
At 0.7 MPa it provides 21991 N of push force and 15080 N of pull force. At 0.9 MPa, the push force increases to 28274 N.
The rear adjusting screw lets you shorten the effective stroke from 850 mm down to 820 mm. This mechanical stop fine-tunes the end position but does not hold the load without live air pressure.
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