Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-100
The AirTAC SAIJ100X400-100 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers substantial thrust, providing 3927N of push force at 0.5 MPa and up to 7068N at 0.9 MPa. The built-in rear screw stopper allows you to fine-tune the end-of-stroke position during commissioning without physically swapping out the cylinder or adding external stop blocks.
With a 400 mm nominal stroke and a 100 mm adjustment code, this SKU yields a usable travel window of 300 to 400 mm. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches, though this specific configuration omits the internal magnet. The rear adjuster acts purely as a mechanical travel stop to set deceleration limits and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100X400-100 Is Used
Variable End-Stop Forming
Dial in the exact retract distance for pressing or forming operations across different material thicknesses without changing the cylinder setup.
Product-Size Changeovers
Quickly shorten the travel from 400 mm to 300 mm to accommodate varying package lengths on a packaging line during product transitions.
Machine Commissioning
Fine-tune the final end position during initial setup to perfectly align heavy actuators with downstream machinery, avoiding external shims.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-100 the Right Cylinder?
Select this 100 mm bore when an 80 mm bore (delivering 2513N push at 0.5 MPa) is insufficient for heavy handling, but you want to avoid stepping up to a 125 mm body. The 100 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, allowing the retract end-point to be dialed back by up to 100 mm on the fly. Because the nominal stroke is 400 mm, the M20x1.5 piston rod will experience leverage forces over an extended distance; an external guide rail should be used to prevent side-loading damage to the rod seals.
When ordering a replacement, verify the 400 mm stroke, 100 mm adjustment, PT tapered port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). For load-holding applications without live air pressure, this cylinder is not suitable; instead, consider the SAIL air-released lock or BSAI clamp-lock variants.
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 SAIJ100 Adjustable Cylinder SAIJ100X400-100 FAQ
At an operating pressure of 0.5 MPa, it provides 3927N of push force and 3681N of pull force. At the maximum operating pressure of 1.0 MPa, it generates a maximum push force of 801 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 400 mm down to 300 mm. This creates a 300-400 mm usable window for fine-tuning the retract end position at commissioning, but it does not lock the load without continuous air pressure.
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