Airtac SAIJ200 Adjustable Cylinder SAIJ200AX75-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX75-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 75mm 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
- Stroke75 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX75-20
The AirTAC SAIJ200X75-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 55 to 75 mm, allowing you to dial back the nominal 75 mm stroke by up to 20 mm during machine commissioning. Belonging to the highest force class in this series, it delivers 15708 N of push thrust and 15080 N of pull thrust at 0.5 MPa.
This unit is configured with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance, along with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, although this specific SKU omits the magnet, meaning position sensing via CMSE or DMSE switches is not supported without modification. The rear adjuster acts purely as a mechanical stop to fine-tune the end position, while the variable air cushions manage deceleration.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX75-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX75-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 75 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 SAIJ200AX75-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×75 | 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 SAIJ200AX75-20 Is Used
Heavy Press End-Tuning
Dial in the exact 55-75 mm retract position on heavy press operations without machining external stopper blocks.
Product Changeover
Quickly adapt the cylinder's end-stop during a production line changeover to accommodate slightly different product sizes.
Large Fixture Alignment
Achieve precise clamping alignment on large industrial fixtures by trimming the stroke up to 20 mm at commissioning.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX75-20 the Right Cylinder?
Choose this 200 mm bore when an application demands extreme force, as stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N. An adjustable-stroke cylinder is selected over a fixed-stroke SAI when you need to fine-tune the retract end position on the fly without swapping the physical cylinder or adding external stopper blocks.
Because the rear adjuster only sets the travel end and the air cushion only manages deceleration, neither holds the load without live air pressure. For drop-out protection, consider an SAIL air-released lock or a BSAI clamp-lock cylinder. This SAIJ model is dimensionally interchangeable per ISO 15552 and supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). The operating speed is 30-500 mm/s.
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 SAIJ200AX75-20 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 the maximum operating pressure of 1.0 MPa, it delivers 3204 kgf.
The rear adjusting screw lets you shorten the effective travel from the 75 mm nominal stroke down to 55 mm, creating a 55-75 mm usable window. The adjuster functions as a mechanical stop to set the end position and does not lock the load without live air.
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