Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75 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 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 SAIJ100X400-75
The AirTAC SAIJ100X400-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 3927N push force at 0.5 MPa. It features a carbon steel piston rod and a PT tapered G1/2 port. By integrating an external adjusting screw, this unit allows you to dial back the nominal 400mm stroke by up to 75mm, creating a precise 325-400mm usable travel window.
This on-the-fly tuning is ideal for product changeovers, eliminating the need to physically swap the cylinder or bolt on external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. While the rear screw and variable air cushions effectively set and decelerate the travel end, note that this is a stop rather than a lock; it will not hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75 |
|---|---|
| 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 | 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 SAIJ100X400-75
| 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 SAIJ100X400-75 Is Used
Variable End-Stop Positioning
Dial in the exact 325-400mm extension needed for different material thicknesses on the fly, using the rear screw to fine-tune the stroke without changing out the cylinder.
Product Changeover Diverter
Quickly reconfigure a diverting arm on a packaging line by adjusting the travel end, accommodating new carton sizes while maintaining the high 3927N push force.
Machine Setup Commissioning
Safely limit the physical travel during initial machine bring-up to prevent crashes, then lock the 75mm adjustment screw at the optimal operating position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-75 the Right Cylinder?
Choose this 100mm bore when your application requires significantly more thrust than the 80mm version (2513N push at 0.5 MPa), but without stepping up to the heavier 125mm class. The adjustable 325-400mm window is perfect for commissioning setups where the exact end-position varies by product batch, offering flexibility that a fixed-stroke SAI cylinder cannot provide. Because the stroke extends to 400mm, the M20x1.5 rod needs external guiding to prevent excessive side-loading on the seals.
To match this ISO 15552 dimensionally interchangeable cylinder for a replacement, verify the 100mm bore, 400mm stroke, 75mm adjustment range, PT port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). If your machine requires true load-holding without continuous air pressure, consider the SAIL or BSAI locking variants instead of relying on the adjuster.
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 SAIJ100X400-75 FAQ
At a 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 5497N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 400mm nominal stroke by up to 75mm, providing a usable travel window of 325-400mm. It sets the end position but does not lock the load without live air pressure.
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 SAIJ100X400-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.