Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30S 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 SAIJ200AX850-30S
The AirTAC SAIJ200X850-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 850 mm travel by up to 30 mm for a precise 820-850 mm usable window. As the largest standard bore, it delivers immense thrust, generating 21991 N of push force at 0.7 MPa and pulling 15080 N at 0.5 MPa. This makes it highly suitable for heavy-duty press operations requiring exact end-position tuning during commissioning.
This specific SKU is configured with a SUS420J2 stainless steel rod (option A) for superior corrosion and wear resistance, alongside a PT tapered port thread and an integrated magnet for position sensing. The extruded aluminum barrel features sensor grooves on both sides, allowing you to mount AirTAC CMSE reed or DMSE solid-state switches exactly where needed. The rear adjuster acts purely as a mechanical stop to set the travel end and relies on the variable air cushions for end-of-stroke deceleration.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30S |
|---|---|
| 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 SAIJ200AX850-30S
| 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 SAIJ200AX850-30S Is Used
Heavy Press Tuning
Dial in the exact 820-850 mm travel end during heavy-duty press commissioning to accommodate material thickness variations without swapping cylinders.
Product Changeover Stops
Quickly adjust the end-stop position for different large-scale product sizes on a conveyor line, saving setup time and eliminating external stopper hardware.
Large Assembly Calibration
Fine-tune the retract position on massive assembly fixtures, ensuring perfect alignment of heavy components before the final clamping action.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX850-30S the Right Cylinder?
Choose this 200 mm bore when your application demands maximum output force that smaller bores cannot provide; for comparison, stepping down to a 160 mm bore drops your 0.5 MPa pull force to 9425 N. The adjustable stroke feature is selected over a fixed SAI cylinder when you need variable end stops for product changeovers or fine-tuning at machine setup without adding external stopper blocks. Because the stroke is 850 mm, the 40 mm rod and M36x2 thread must be paired with an external guide to prevent excessive side-loading on the long unsupported travel. Remember that the rear adjuster is a travel stop, not a locking device; this plain SAIJ will not hold a load without live air pressure, so for fail-safe load holding, consider an SAIL or BSAI cylinder. It is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR options.
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 SAIJ200AX850-30S 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 pressure, it delivers a top push force of 28274 N.
The rear mechanical stopper allows you to shorten the nominal 850 mm stroke by up to 30 mm, creating a usable travel window of 820-850 mm. This lets you fine-tune the end position at commissioning without altering the cylinder's physical mounting.
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