Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 400mm 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
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-40
The AirTAC SAIJ200X400-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. Its 400 mm nominal stroke can be dialed back by up to 40 mm, creating a 360-400 mm usable travel window for precise end-position tuning during commissioning. In this configuration, the piston rod is manufactured from SUS420J2 stainless steel, offering enhanced corrosion resistance compared to standard carbon steel. Operating at 0.15-1.0 MPa, it delivers a robust 15708 N push force at 0.5 MPa.
This 200 mm bore profile cylinder features a PT tapered G3/4 port and a 40 mm variable air cushion at both ends to absorb kinetic energy. The rear adjustment screw acts purely as a mechanical stop to set the retract distance without needing external shims. It is dimensionally interchangeable per ISO 15552 mounting interfaces and supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAIJ200AX400-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×400 | 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 SAIJ200AX400-40 Is Used
Variable Product Changeover
Dial in the 360-400 mm travel window on the fly to accommodate different package sizes on a packaging line without disassembling the cylinder mount.
Machine Setup Tuning
Fine-tune the exact retract end-position during initial commissioning using the rear stopper, ensuring perfect alignment without adding external mechanical shims.
Heavy-Duty Positioning
Leverage the 15708 N push force at 0.5 MPa to move heavy pallets or industrial molds into their exact final position before a secondary process begins.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX400-40 the Right Cylinder?
Choose this 200 mm bore when your application demands maximum thrust, generating 15708 N push and 15080 N pull at 0.5 MPa. If you need less force, stepping down to a 160 mm bore provides 10053 N push at 0.5 MPa, which may better suit lighter loads and reduce air consumption. The adjustable stroke is ideal for machines requiring variable end-stops during product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder.
Because the 400 mm stroke is substantial, the M36x2 rod should be paired with an external guide to prevent excessive side-loading and premature seal wear. To match this ISO 15552 replacement, specify a 200 mm bore, 400 mm stroke, 40 mm adjustment, PT G3/4 port, and the desired mounting style. Note that this plain SAIJ cylinder does not hold loads without live air; the adjuster is a stop, not a lock. For load-holding requirements without continuous air pressure, consider the SAIL or BSAI 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 SAIJ200AX400-40 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 0.7 MPa, the push force increases to 21991 N.
The rear adjuster acts as a mechanical stop that lets you shorten the 400 mm nominal stroke by up to 40 mm, providing a usable travel window of 360 to 400 mm. It sets the end position but does not lock the load without live air pressure.
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