Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 85mm 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
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30
The AirTAC SAIJ200X85-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 55-85mm. Delivering a massive 15708N of push force at 0.5MPa, it handles heavy-duty positioning with precision. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This variant uses a SUS420J2 stainless steel rod for superior corrosion resistance and features PT tapered port threads on the G3/4 supply ports. The rear adjustment screw acts purely as a travel stop for fine-tuning end positions during commissioning; it is not a locking mechanism and cannot hold loads without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 85 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 SAIJ200AX85-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×85 | 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 SAIJ200AX85-30 Is Used
Heavy Press Fine-Tuning
Dial in the exact 55-85mm travel window during press setup to accommodate varying material thicknesses without external stops.
Variable End-Stop Positioning
Adjust the rear screw up to 30mm to shift the retract end-position on the fly during automated machine changeovers.
Corrosive Environment Actuation
Leverage the SUS420J2 stainless steel rod and 15708N push force for robust clamping in humid or washdown industrial settings.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30 the Right Cylinder?
Select this 200mm bore actuator when an application demands immense thrust that smaller bores cannot provide, such as replacing a 160mm cylinder that only yields 10053N at 0.5MPa. The 30mm adjustment range is ideal for dialing in exact end-stops during machine setup or product changeover without swapping out the physical cylinder.
Because the 85mm stroke is relatively short, side-load stress is minimized, though the robust 40mm rod and M36x1.5 thread easily handle high bending moments. Remember that the rear adjuster only trims travel distance; for true load-holding without continuous air supply, you must integrate an external rod lock or select an AirTAC SAIL or BSAI series cylinder. This model is dimensionally interchangeable per ISO 15552 standards.
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 SAIJ200AX85-30 FAQ
At an operating pressure of 0.5MPa, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. It can deliver up to 3204 kgf at its maximum 1.0MPa pressure rating.
The SAIJ200X85-30 features a rear adjusting screw that allows you to shorten the nominal 85mm stroke by up to 30mm. This creates a usable travel window of 55-85mm, enabling precise end-position tuning without changing the cylinder.
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