Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50 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 SAIJ100BX475-50
The AirTAC SAIJ100X475-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, letting you dial back the effective travel by up to 50 mm to achieve a precise 425-475 mm usable window. Delivering 3927 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and comes standard with PT tapered port threads.
The rear adjustment mechanism acts purely as a mechanical stop to fine-tune the retract end position during commissioning or product changeover, meaning you never have to bolt on external stops or swap the cylinder. It is a true extruded aluminum profile cylinder, dimensionally interchangeable per ISO 15552, and omits the FB, CA, CB, and CR mounting formats in favor of the standard Basic, FA, LB, TC, FTC, TCM1, and TCM2 set.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50 |
|---|---|
| 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 SAIJ100BX475-50
| 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 SAIJ100BX475-50 Is Used
Product Changeover
Quickly fine-tune the retract end-position within the 425-475 mm window when switching a production line to a different pallet or fixture size.
Machine Setup
Dial in the exact stroke limit during commissioning without adding external mechanical stops, using the rear screw to set the perfect resting position.
Variable End Stops
Adapt clamping or positioning depth on the fly for flexible manufacturing runs, relying on the 3927 N push force to hold the workpiece securely.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50 the Right Cylinder?
Choose this 100 mm bore when 80 mm (2513 N push at 0.5 MPa) is insufficient for your load, but you want to avoid stepping up to 125 mm. The 475 mm stroke exceeds the threshold where an unsupported piston rod is prone to buckling, so an external guide is mandatory to prevent excessive side-load wear on the seals and barrel.
Select the adjustable SAIJ over a fixed SAI when your machine setup requires variable end-stops or fine end-position tuning without physical cylinder replacement. Because the rear adjuster only sets the travel end and relies on the air cushion for deceleration, it cannot hold a load without live air pressure; for true load-holding, specify an AirTAC SAIL or BSAI series cylinder instead.
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 SAIJ100BX475-50 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. It can reach up to 7068 N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you trim the 475 mm nominal stroke back by up to 50 mm, creating a usable travel window of 425-475 mm. It only sets the end position and does not lock or hold the load without live air pressure.
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