Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-75S
The AirTAC SAIJ200X120-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 120 mm stroke by up to 75 mm. This creates a highly flexible usable travel window of 45 to 120 mm, allowing precise end-position tuning during commissioning without swapping the barrel or adding external stops. It delivers immense thrust, pushing with 15708 N and pulling with 15080 N at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
This SKU is configured with an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE solid-state sensors housed in the dual-side extruded barrel grooves. The rear adjuster acts purely as a mechanical stop to set the retract position and deceleration point; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 120 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 SAIJ200AX120-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×120 | 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 SAIJ200AX120-75S Is Used
Heavy Press Tuning
Dial in the exact 45 to 120 mm pressing distance for large assemblies without machining custom spacers or changing the cylinder.
Product Changeover
Quickly adjust the retract end-stop to accommodate different sized products flowing down a heavy-duty conveyor line.
Automated Clamp Setup
Set precise clamping positions during machine commissioning, leveraging the 15708 N push force at 0.5 MPa to secure large workpieces.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-75S the Right Cylinder?
Choose this 200 mm bore unit when your application demands maximum force, as stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N. An adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops for product-size changeovers on a line, letting you fine-tune the retract distance on the fly. This model features a PT tapered port and supports the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It is dimensionally interchangeable per ISO 15552.
Because the 120 mm stroke is relatively short for this large bore, side-loading is less of a concern than with long strokes, but the substantial 40 mm rod and M36x2 thread provide excellent rigidity against minor deflection. Remember that the rear adjuster only trims the travel window down to 45 mm; it cannot extend the stroke beyond 120 mm. If you need pneumatic locking without live pressure, integrate an external rod lock.
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 SAIJ200AX120-75S FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder provides a push force of 15708 N and a pull force of 15080 N. At 0.7 MPa, the push force increases to 21991 N.
The rear adjuster screw allows you to mechanically shorten the nominal 120 mm stroke by up to 75 mm, providing a usable travel window of 45 to 120 mm. It functions as a travel stop and does not lock the load without continuous air pressure.
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