Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-20 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 SAIJ100BX275-20
The AirTAC SAIJ100X275-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel by up to 20 mm, creating a precise 255-275 mm usable window. Delivering 3927 N of push force and 3681 N of pull force at 0.5 MPa, it handles heavy actuation tasks with ease. This configuration includes a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads.
The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. Because this is an adjustable-stroke variant, it utilizes a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR brackets found on some fixed-stroke models. The rear adjuster acts purely as a travel stop and deceleration point, meaning it will not hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-20 |
|---|---|
| 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 SAIJ100BX275-20
| 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 SAIJ100BX275-20 Is Used
Machine Changeover
Dial in the exact 255-275 mm end-stop during product size transitions on a packaging line without physically swapping the actuator.
Fixture Positioning
Fine-tune the clamping travel on heavy machining fixtures where a fixed 275 mm stroke would over-travel or bottom out.
Press Assembly
Press components accurately into place, using the rear adjuster to compensate for material thickness variations on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-20 the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires substantial thrust—up to 5497 N at 0.7 MPa—combined with on-the-fly end-position tuning. If your force requirements are lower, stepping down to a 63 mm bore yields 1559 N of push force at 0.5 MPa, whereas this SAIJ100X275-20 provides the extra margin needed for heavier fixtures. The adjustable stroke is ideal for product changeovers or fine-tuning a machine setup without swapping cylinders or adding external stops. For load-holding without continuous air supply, this cylinder is insufficient as the adjuster is not a lock; you should specify an SAIL (air-released lock) or BSAI (clamp-lock) model instead. Ensure your replacement matches the 100 mm bore, 275 mm stroke, 20 mm adjustment, PT ports, and the specified mounting style.
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 SAIJ100BX275-20 FAQ
The rear adjuster screw allows you to shorten the nominal 275 mm stroke by up to 20 mm, providing a usable travel window of 255 to 275 mm. This stopper sets the end position and deceleration point but does not lock or hold the load without live air pressure.
At 0.5 MPa, the SAIJ100X275-20 provides 3927 N of push force and 3681 N of pull force. If operating at 0.7 MPa, the push force increases to 5497 N.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.