Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-100 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 SAIJ100X280-100
The AirTAC SAIJ100X280-100 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 280 mm stroke that can be fine-tuned down by up to 100 mm, creating a precise 180-280 mm usable travel window. Belonging to the 100 mm bore class, it delivers substantial thrust, generating 7068 N of push force at 0.9 MPa and 3927 N at 0.5 MPa.
This model features a robust 25 mm carbon steel rod with an M20x1.5 thread, paired with G1/2 PT ports. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing for direct mounting of CMSE reed or DMSE electronic switches if a magnet is specified later. Adjustment is handled mechanically at the rear, and the variable air cushions at both ends manage end-of-stroke deceleration.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-100 |
|---|---|
| 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 SAIJ100X280-100
| 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 SAIJ100X280-100 Is Used
Variable End-Stop Machining
Dial in the 180-280 mm travel window during setup to accommodate different part lengths on the same fixture without changing out the entire cylinder assembly.
Product Changeover Systems
Leverage the 100 mm adjustment range to rapidly reposition conveyor diverters or stops for varying package sizes, minimizing line downtime.
Heavy-Duty Pressing
Utilize the 7068 N push force at 0.9 MPa for assembly presses, using the rear screw to precisely set the bottoming position for delicate components.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-100 the Right Cylinder?
Choose this 100 mm bore when an application requires heavy thrust beyond the 4523 N push force of an 80 mm cylinder, but less than the 11045 N provided by a 125 mm bore. The 100 mm adjustment code is ideal for machinery requiring significant travel flexibility during product changeovers, eliminating the need to physically swap cylinders or bolt on external stops. At 280 mm stroke, the unsupported load should be guided externally to prevent excessive side-loading on the 25 mm rod.
For an exact ISO 15552 replacement match, verify the 100 mm bore, 280 mm nominal stroke, 100 mm adjuster, G1/2 PT ports, and carbon steel rod. Note that SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjuster acts strictly as a travel stop and does not hold the load without live air; for pneumatic locking, consider the SAIL or BSAI series.
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 SAIJ100X280-100 FAQ
At its maximum operating pressure of 0.9 MPa, this 100 mm bore cylinder generates a push force of 7068 N and a pull force of 3681 N. At 0.5 MPa, it provides 3927 N of push force.
The rear adjuster screw allows you to mechanically shorten the effective stroke by up to 100 mm. This creates a usable travel window of 180 to 280 mm, enabling fine-tuning of the end position without altering the pneumatic plumbing.
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