Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 450mm 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
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20S
The AirTAC SAIJ200X450-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers massive thrust, generating 28274N of push force at 0.9 MPa, making it suited for heavy-duty industrial automation. The integrated -20 mm adjustment screw allows you to fine-tune the retract end position, creating a precise 430-450 mm usable travel window without needing external stops.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing. It operates at speeds of 30-500 mm/s and uses a G3/4 port. The extruded aluminum barrel includes sensor grooves on both sides, seamlessly accommodating AirTAC CMSE reed and DMSE electronic solid-state switches.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 450 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 SAIJ200AX450-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×450 | 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 SAIJ200AX450-20S Is Used
Heavy Press Tuning
Dial in the exact 430-450 mm end-stop during heavy press commissioning to accommodate material thickness variations without adding external mechanical stops.
Product Changeovers
Adjust the retract position on the fly for different pallet sizes on a conveyor line, utilizing the 20 mm trim range to avoid reprogramming fixed stops.
Large Assembly Fixtures
Secure and position massive components in automotive assembly fixtures, leveraging up to 28274N of push force at 0.9 MPa with precise end-position control.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20S the Right Cylinder?
Select this 200 mm bore cylinder when an application demands extreme force, such as 18095N push at 0.7 MPa, alongside precise end-position tuning. If your setup requires less force, stepping down to a 160 mm bore yields 14074N push at 0.7 MPa, whereas this SAIJ model is reserved for heavy loads. The adjustable stroke is ideal for product changeovers, allowing you to dial in the 430-450 mm travel window during commissioning rather than swapping out a fixed-stroke SAI cylinder.
Because the 450 mm stroke is substantial, the 40 mm rod diameter and M36x2 thread provide robust support, but an external guide is still recommended to manage side loads on long extensions. For ISO 15552 interchangeability, match the 200 mm bore, 450 mm stroke, PT tapered port threads, and the -S magnet. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider an external rod lock or the SAIL series.
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 SAIJ200AX450-20S FAQ
The rear adjuster screw acts as an external stopper that lets you shorten the effective stroke by up to 20 mm. This creates a usable travel window of 430-450 mm, allowing you to fine-tune the end position at commissioning without swapping the cylinder.
At an operating pressure of 0.9 MPa, the SAIJ200X450-20-S generates a push force of 28274N and a pull force of 15080N. It can achieve a maximum push force of 3204 kgf at 1.0 MPa.
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