Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 280mm 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
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-30S
The AirTAC SAIJ100X280-30-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you fine-tune the retract end-position during commissioning. The 30mm adjustment screw creates a usable travel window of 250-280mm from the 280mm nominal stroke without adding external stops. It delivers 3927N of push force at 0.5MPa and features a SUS304 stainless steel rod for superior corrosion resistance.
This model includes a magnet for position sensing with AirTAC CMSE reed or DMSE electronic solid-state switches. The extruded aluminum barrel has sensor grooves on both sides for flexible mounting. The rear adjuster acts purely as a travel stop to set deceleration, so it will not hold a load without live air pressure—use a SAIL or BSAI cylinder for pneumatic locking.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 280 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 SAIJ100BX280-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×280 | 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 SAIJ100BX280-30S Is Used
Variable End-Stop Tuning
Dial in the exact 250-280mm retract position during machine setup to accommodate different product sizes without swapping hardware.
Corrosive Setup Changeovers
Leverage the SUS304 stainless rod in damp environments while fine-tuning the 30mm stroke adjustment for new line configurations.
Commissioning Position Trimming
Use the rear stopper to trim the travel end precisely, eliminating the need to bolt on external physical stops during initial commissioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-30S the Right Cylinder?
Choose this 100mm bore when a 50mm bore (982N push at 0.5MPa) is too weak but a 125mm bore is oversized. The adjustable stroke is ideal for product changeovers where the exact end-of-travel position varies by up to 30mm, replacing the need to swap a fixed-stroke SAI cylinder. To match this ISO 15552 replacement, specify a 100mm bore, 280mm stroke, PT tapered ports, and a -S magnet.
Because the 280mm stroke is under the 300mm threshold, side-load stress is manageable, but the 25mm rod and M20x1.5 thread still require external guiding for heavy lateral loads. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Speed ranges from 30-800mm/s.
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 SAIJ100BX280-30S FAQ
At 0.5MPa it provides 3927N push and 3681N pull force. At 0.9MPa, the push force increases to 7068N, with a maximum force of 801kgf at 1.0MPa.
The rear adjuster screw lets you shorten the 280mm nominal stroke by up to 30mm, providing a usable travel window of 250-280mm. It functions as a mechanical stop to tune the end position and does not lock the load without air pressure.
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