Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 275mm 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
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40
The AirTAC SAIJ100X275-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 235-275mm usable travel window, allowing you to dial back the 275mm nominal stroke by up to 40mm during machine commissioning. Delivering 3927N of push force at 0.5MPa, it handles heavy loads without requiring cylinder swaps or external stops.
This extruded aluminum barrel unit includes a 25mm carbon steel rod and M20x1.5 rod thread to manage high side loads. It uses a PT G1/2 port and offers variable air cushions at both ends. For position sensing, you can add a magnet for CMSE reed or DMSE solid-state switches in the dual sensor grooves.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 275 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 SAIJ100X275-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SAIJ100X275-40 Is Used
Machine Setup & Changeover
Fine-tune the 235-275mm travel window during installation to perfectly set the retract end-position without machining new hard stops.
Variable Product Diverter
Adjust the retract stroke on the fly to accommodate different package sizes moving down a heavy-duty conveyor line.
Heavy-Duty Pressing Station
Utilize the 3927N push force at 0.5MPa for assembly operations, tweaking the end-stop to compensate for tooling wear.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40 the Right Cylinder?
Choose this 100mm bore when the 80mm variant (2513N push at 0.5MPa) lacks thrust, but the 125mm bore is physically oversized. The 40mm adjustment range is ideal for product changeovers requiring variable end-stops, replacing the need for fixed-stroke SAI models. To match an ISO 15552 replacement, specify the 100mm bore, 275mm stroke, 40mm adjust, PT G1/2 port, and your required mounting from the SAIJ set: Basic, FA, LB, TC, FTC, TCM1, TCM2 (FB, CA, CB, and CR are omitted).
Because the 275mm stroke is substantial, an external guide is recommended to prevent rod binding under high side loads. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true load-holding, consider an external rod lock, a pilot-operated check valve, or the AirTAC SAIL and BSAI clamp-lock 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 SAIJ100X275-40 FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. It can reach up to 7068N push force at 0.9MPa.
A rear stopper screw lets you shorten the 275mm nominal stroke by up to 40mm, creating a usable travel window of 235-275mm. This stopper only sets the end position; it does not lock the load without continuous air pressure.
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