Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-50S
The AirTAC SAIJ100X475-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 475 mm travel by up to 50 mm for a usable window of 425-475 mm. This fine-tuning capability is ideal for product changeovers, letting you set exact retract endpoints at commissioning without swapping out the entire actuator or adding external stops. It delivers substantial power, providing 7068 N of push force at 0.9 MPa.
This model features a standard carbon steel piston rod and a built-in magnet (-S) for position sensing with AirTAC CMSE reed and DMSE electronic switches. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. As an adjustable-stop cylinder, the rear screw and the variable air cushions only decelerate the load; they do not function as a mechanical lock, so live air is required to maintain position against sustained loads.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 475 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 SAIJ100X475-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×475 | 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 SAIJ100X475-50S Is Used
Product Changeovers
Dial in the exact 425 to 475 mm retract endpoint during format size changes on a packaging line without physically replacing the actuator.
Machine Setup Calibration
Fine-tune the end-of-stroke position during initial commissioning to perfectly time heavy pressing or lifting motions within a 50 mm window.
Variable End-Stop Forming
Adjust the retract depth on the fly for heavy-duty forming or clamping stations that process materials of slightly varying thicknesses.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X475-50S the Right Cylinder?
Choose this 100 mm bore when you need heavy thrust that smaller neighbors cannot provide, such as stepping up from a 80 mm bore that yields 4523 N at 0.9 MPa. The integrated 50 mm adjustment range is selected over a fixed-stroke SAI when your machine setup requires variable end-stops or precise endpoint tuning during line changeovers. If your application requires holding a load without continuous air pressure, pair this cylinder with an external pilot-operated check valve or explore the SAIL or BSAI locking series.
For an exact ISO 15552 dimensional replacement, match the 100 mm bore, 475 mm stroke, 50 mm adjustment code, PT tapered port threads, and the -S magnet option. Because the stroke extends to 475 mm, the 25 mm rod and M20x1.5 thread will experience leverage forces under side loading; an external guide rail should be used to prevent rod bending and premature seal wear. The mounting hardware is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR kits found on some standard cylinders.
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 SAIJ100X475-50S FAQ
At 0.9 MPa operating pressure, this 100 mm bore cylinder provides 7068 N of push force and 6624 N of pull force. At 0.5 MPa, the push force is 3927 N.
The rear adjuster screw acts as a mechanical stop that shortens the 475 mm nominal stroke by up to 50 mm, giving an effective travel range of 425 to 475 mm. The adjuster only sets the end position and does not lock the load without live air pressure.
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