Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40 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 SAIJ100X400-40
The AirTAC SAIJ100X400-40 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 3927N of push force and 3681N of pull force at 0.5 MPa, making it a robust choice for heavy-duty actuation. The barrel is extruded aluminum with sensor grooves on both sides, strictly avoiding tie-rod construction.
This specific SKU provides a 400mm nominal stroke that can be dialed back by up to 40mm, creating a precise 360-400mm usable travel window. The rear screw stopper allows you to fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. It uses a G1/2 port and an M20x1.5 rod thread, while the mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40 |
|---|---|
| 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 SAIJ100X400-40
| 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 SAIJ100X400-40 Is Used
Machine Changeover
Dial in the 360-400mm retract stop during product size changeovers without disassembling the tooling or adding spacers.
End-Position Tuning
Fine-tune the exact retraction point at machine commissioning to perfect timing and crush forces on the fly.
Heavy Pressing
Leverage the 3927N push force at 0.5 MPa for heavy pressing operations while retaining the ability to trim travel.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40 the Right Cylinder?
Select this 100mm bore when an application requires substantial thrust—such as the 5497N push force at 0.7 MPa—but demands on-site travel tuning. If your machine needs less force, stepping down to an 80mm bore yields 2513N at 0.5 MPa; if you need more, a 125mm bore provides 6136N. Choose this adjustable-stroke SAIJ over a fixed SAI when you anticipate product changeovers or need to dial in an exact end-stop without machining external spacers.
Because the 400mm stroke is relatively long, the 25mm rod should not be relied upon to absorb high side loads; always guide the load externally to prevent rod binding. To replace this cylinder with another ISO 15552 unit, match the 100mm bore, 400mm stroke, 40mm adjustment, PT tapered G1/2 port, and the required mounting. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, use an external rod lock or pilot-operated check valve.
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 SAIJ100X400-40 FAQ
It features a rear external screw stopper that allows you to shorten the effective stroke by up to 40mm. This creates a usable travel window of 360-400mm, letting you set the exact retract end position without replacing the cylinder.
At 0.5 MPa, it provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.