Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 270mm 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
- Stroke270 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40
The AirTAC SAIJ100X270-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 270 mm stroke that can be dialed back by up to 40 mm, giving you a precise 230-270 mm usable travel window for product changeovers without swapping hardware. Delivering 3927 N of push force at 0.5 MPa, it handles heavy loads with ease.
This 100 mm bore unit uses a G1/2 port and a robust 25 mm carbon steel rod with an M20x1.5 thread, providing excellent side-load resistance. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 options. The rear adjuster acts purely as a mechanical stop to set deceleration endpoints, not as a load-holding lock.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 270 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 SAIJ100X270-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×270 | 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 SAIJ100X270-40 Is Used
Variable End-Stop Setup
Dial in the exact 230-270 mm travel distance during machine commissioning to accommodate varying material thicknesses without changing the cylinder.
Product Changeover
Quickly adjust the retract end-position on automated lines when switching between product sizes, minimizing downtime and avoiding external stop hardware.
Heavy Press Assembly
Leverage the 3927 N push force at 0.5 MPa for pressing and joining operations, using the rear stop to fine-tune the final pressing depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-40 the Right Cylinder?
Choose this 100 mm bore size when you need substantial thrust, such as the 3927 N push force at 0.5 MPa, stepping up from a 63 mm bore that only offers 1559 N. The adjustable stroke is ideal for machine setups requiring fine end-position tuning during commissioning, replacing the need to bolt on external stops or buy a fixed-stroke SAI cylinder. When replacing an ISO 15552 cylinder, match the 100 mm bore, 270 mm stroke, 40 mm adjustment, G1/2 PT port, and mounting style. Since the stroke is 270 mm, ensure you use an external guide to support the load and minimize side-load wear on the rod seals.
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 SAIJ100X270-40 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. It can deliver up to 7068 N of push force at 0.9 MPa.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 270 mm down to 230 mm. This creates a 230-270 mm adjustable window for fine-tuning end positions without replacing the cylinder.
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