Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50 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 SAIJ100X280-50
The AirTAC SAIJ100X280-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 230 to 280 mm, letting you dial back the nominal 280 mm stroke by up to 50 mm during commissioning. This bore generates 3927 N of push force and 3681 N of pull force at 0.5 MPa, making it suited for heavier actuation tasks.
The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches if a magnet is added later. It uses a robust 25 mm carbon steel rod with an M20x1.5 thread to handle high side loads, and the mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50 |
|---|---|
| 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 SAIJ100X280-50
| 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 SAIJ100X280-50 Is Used
Variable End-Stop Positioning
Dial in the exact 230 to 280 mm travel distance during machine setup without physically changing the cylinder installation.
Product Size Changeover
Quickly adapt automated lines to different product lengths by turning the rear adjuster to meet new end-position requirements.
Heavy Fixture Clamping
Leverage 3927 N of push force at 0.5 MPa to secure large workpieces, using the adjustable stop to fine-tune clamp pressure.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X280-50 the Right Cylinder?
Choose this 100 mm bore when a 63 mm bore (1559 N push at 0.5 MPa) is underpowered, but a 125 mm bore is too large. The 50 mm adjustment range is ideal for product changeovers where the exact end-of-stroke position varies, eliminating the need to swap cylinders or bolt on external stops. Because the rear adjuster acts only as a travel stop and the air cushions manage deceleration, neither will hold a load without live air pressure. For load-holding without continuous air, consider an external rod lock or the SAIL pneumatic lock series.
When ordering a replacement, verify the 280 mm stroke, 50 mm adjustment, G1/2 PT port, and the specific mounting bracket. Since the stroke is 280 mm, ensure proper external guiding to prevent rod bending under heavy offset loads. The standard carbon steel rod and TPU seals suit general industrial environments up to 70 C.
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 SAIJ100X280-50 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 0.7 MPa, the push force increases to 5497 N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 280 mm down to 230 mm. It sets the travel end and deceleration point but does not lock the load without live air pressure.
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