Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-75
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX400-75 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ100 Adjustable Cylinder SAIJ100AX400-75
The AirTAC SAIJ100X400-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel. With a 400 mm nominal stroke and a 75 mm adjustment range, it provides a usable travel window of 325 to 400 mm. This enables precise end-position tuning at commissioning without swapping out the cylinder or adding external stops.
This model features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and uses a PT tapered G1/2 port. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. While the rear adjuster and variable air cushions at both ends decelerate the load effectively, neither acts as a lock; the cylinder cannot hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-75 |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-75
| 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 SAIJ100AX400-75 Is Used
Product Changeover
Dial in the 325-400 mm travel window during format changes on packaging lines, using the rear screw to fine-tune the end stop without disassembling the actuator.
Machine Setup
Perfect for commissioning new equipment where the exact end-of-stroke position is unknown, allowing 75 mm of rear adjustment to dial in the process perfectly.
Variable End Stops
Ideal for assembly stations that process multiple part lengths, using the adjustable stopper to change the effective stroke rather than installing separate cylinders.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-75 the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires substantial thrust—such as 3927 N at 0.5 MPa or 5497 N at 0.7 MPa—and on-the-fly stroke adjustments. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136 N. The adjustable rear stopper is ideal for machine setups requiring variable end stops or product-size changeovers, offering flexibility that a fixed-stroke SAI cylinder cannot match.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 400 mm stroke, 75 mm adjustment range, G1/2 PT port, and your required mounting hardware. SAIJ supports a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because this stroke is 400 mm, long unsupported loads should use an external guide to prevent side-loading damage to the rod and front cap. For load-holding without continuous air pressure, consider an external pilot-operated check valve or a SAIL/BSAI locking cylinder.
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 SAIJ100AX400-75 FAQ
At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster acts as a mechanical stop that can trim the 400 mm nominal stroke back by up to 75 mm, giving an effective travel window of 325 to 400 mm. It sets the end position but does not lock the load without live air.
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