Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-40 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 SAIJ100BX500-40
The AirTAC SAIJ100X500-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, providing a usable travel window of 460 to 500 mm. Equipped with a robust 25 mm SUS304 stainless steel rod and PT tapered G1/2 ports, it delivers 5497 N of push force at 0.7 MPa. This bore size hits a strong middle ground, stepping up from 3518 N at 80 mm to 8590 N at 125 mm.
The integrated rear stopper allows fine end-position tuning at commissioning without adding external stops or swapping the cylinder. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the adjuster and air cushions only decelerate the load; they do not hold position without live air. For load-holding without pressure, use an external rod lock or pilot-operated check valve.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-40 |
|---|---|
| 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 SAIJ100BX500-40
| 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 SAIJ100BX500-40 Is Used
Machine Setup Tuning
Dial in the exact end-stop during machine commissioning without replacing the cylinder or bolting on external stops.
Product Changeover
Adjust the travel window from 460 to 500 mm to handle varying package sizes on a single pneumatic line.
Variable End Stops
Set precise retract positions for multi-stage assembly processes requiring flexible stroke limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-40 the Right Cylinder?
Choose this 100 mm bore when 80 mm (3518 N at 0.7 MPa) is insufficient but 125 mm (8590 N) is oversized. The 40 mm adjustment range is ideal for product changeovers requiring a variable end-stop. Because the 500 mm stroke is long, the 25 mm rod handles side loads well, but an external guide is still recommended to prevent rod binding.
For ISO 15552 replacement matching, specify a 100 mm bore, 500 mm stroke, 40 mm adjustment, G1/2 PT ports, SUS304 (B) rod material, and no magnet. The SAIJ uses a profile barrel, not a tie-rod design, and omits FB, CA, CB, and CR mounts.
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 SAIJ100BX500-40 FAQ
At 0.7 MPa operating pressure, the 100 mm bore provides 5497 N of push force and 3681 N of pull force. The maximum theoretical force at 1.0 MPa is 801 kgf.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective stroke from 500 mm down to 460 mm. It only sets the travel end and does not lock the load without live air pressure.
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