Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50S 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 SAIJ100X275-50S
The AirTAC SAIJ100X275-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 225 to 275 mm, allowing you to dial in the retract end-position precisely during commissioning. Equipped with a standard carbon steel rod and a -S magnet, it integrates seamlessly with CMSE reed and DMSE electronic sensors via the dual-side extruded barrel grooves.
Delivering 3927 N of push force at 0.5 MPa and 7068 N at 0.9 MPa, this 100 mm bore unit handles heavy loads. The PT tapered G1/2 port ensures reliable sealing. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The rear screw acts as a travel stop for deceleration, not a lock, so live air is required to hold the load.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50S |
|---|---|
| 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 SAIJ100X275-50S
| 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 SAIJ100X275-50S Is Used
Machine Changeover
Quickly fine-tune the 225-275 mm retract distance when switching product sizes on a packaging line without changing the cylinder mount.
Variable End-Stop Positioning
Dial in the exact end-of-stroke contact point for a pressing operation, using the 50 mm rear adjustment screw to set the perfect depth.
Heavy Load Handling
Leverage the 7068 N push force at 0.9 MPa to move heavy pallets, using the adjustable stop to compensate for mechanical tolerance stack-up.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50S the Right Cylinder?
Choose this 100 mm bore if your application requires 3927 N push force at 0.5 MPa; stepping down to an 80 mm bore yields 2513 N, while a 125 mm bore provides 6136 N. The adjustable stroke is ideal for product changeovers where exact end-stops vary without swapping cylinders. For strokes of 275 mm or longer, an external guide is recommended to prevent side-load wear on the 25 mm rod and M20x1.5 thread.
To match this ISO 15552 cylinder for a retrofit, confirm the 100 mm bore, 275 mm nominal stroke, 50 mm adjustment range, PT G1/2 port, and -S magnet. If your machine needs to hold position without continuous air pressure, select a SAIL (air-released lock) or BSAI (clamp-lock) variant instead, as the SAIJ adjuster only limits travel.
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 SAIJ100X275-50S FAQ
The rear adjuster screw lets you shorten the effective travel from 275 mm down to 225 mm, providing a 50 mm tuning window. It acts as a physical stop to set the end position and does not lock the load without live air.
At 0.5 MPa, it provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
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