Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20S
The AirTAC SAIJ100X500-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 480 to 500 mm for precise end-position tuning. Built with a SUS304 stainless steel rod and a PT tapered port, it generates 3927 N of push force at 0.5 MPa. This bore size operates at speeds between 30 and 800 mm/s and includes variable air cushions at both ends to manage kinetic energy.
Because the rear screw acts purely as a travel stop and not a lock, it cannot hold a load without live air pressure. For position holding, an external pilot-operated check valve or a related SAIL lock cylinder is required. The extruded aluminum barrel features sensor grooves on both sides, and the integrated magnet supports AirTAC CMSE reed and DMSE electronic solid-state switches.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100BX500-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SAIJ100BX500-20S Is Used
Product Changeover
Dial in the 480-500 mm stroke window during format size changes on packaging lines without replacing the cylinder.
End-Stop Calibration
Fine-tune the retract end position during machine commissioning to achieve precise mechanical alignment.
Heavy Load Positioning
Move heavy fixtures using 3927 N of thrust at 0.5 MPa while relying on the rear stop to set exact travel limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20S the Right Cylinder?
Choose this 100 mm bore when a smaller 80 mm cylinder (providing 2513 N push at 0.5 MPa) lacks the necessary thrust, but before stepping up to a 125 mm unit. The adjustable 480-500 mm window is ideal for machine setups requiring variable end stops or product changeovers without swapping cylinders. As a direct ISO 15552 replacement, match the 100 mm bore, 500 mm stroke, PT port, and -S magnet.
With a 500 mm stroke, the 25 mm rod diameter and M20x1.5 thread provide rigidity, but an external guide is strongly recommended to prevent excessive side loading on the piston. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
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 SAIJ100BX500-20S FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to trim the effective stroke back by up to 20 mm, creating a 480 to 500 mm travel window. It functions as a mechanical stop and does not lock the load without live air.
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Standard models usually ship in 3-4 days.
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