Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50 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 SAIJ100X275-50
The AirTAC SAIJ100X275-50 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 back the nominal 275 mm stroke by up to 50 mm during commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy actuation without needing external stops.
This model uses a robust 25 mm carbon steel rod with an M20x1.5 thread, effectively managing side loads, though a 275 mm stroke still requires an external guide for stability. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. It supports the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50 |
|---|---|
| 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 SAIJ100X275-50
| 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 SAIJ100X275-50 Is Used
Machine Setup Changeover
Fine-tune the 225-275 mm travel window during product line changeovers to hit exact end positions without physically replacing the cylinder.
Variable End-Stop Actuation
Dial in the precise stopping point for heavy 3927 N loads, using the rear screw to trim the stroke by exactly the distance needed.
Heavy Assembly Pressing
Execute controlled pressing operations where the 25 mm carbon steel rod withstands high side loads and the 50 mm adjustment absorbs tolerance variations.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-50 the Right Cylinder?
Select this 100 mm bore when a 50 mm bore falls short of the required work output; stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa, whereas this 100 mm unit provides 3927 N. The adjustable stroke is ideal for product changeovers, letting you fine-tune the end position without swapping cylinders. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true position holding, consider the SAIL or BSAI series.
To match this ISO 15552 cylinder dimensionally, verify the 100 mm bore, 275 mm nominal stroke, 50 mm adjustment range, PT tapered port thread, and your required mounting from the available set. Because the stroke is 275 mm, always use an external guide to prevent rod damage from side loads.
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 SAIJ100X275-50 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 801 kgf.
The rear adjuster screw lets you shorten the effective travel from the 275 mm nominal stroke down to 225 mm. This creates a 50 mm tuning window to set the exact retract end position at commissioning without adding external stops.
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