Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50
The AirTAC SAIJ100X250-50 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal stroke of 250 mm that can be fine-tuned backward by up to 50 mm, creating a precise 200-250 mm usable travel window. Delivering 3927 N of push force at 0.5 MPa, it handles heavy-duty positioning tasks with ease.
This extruded aluminum profile cylinder features a 25 mm carbon steel piston rod and a G1/2 PT tapered port. It utilizes variable air cushions at both ends to manage kinetic energy. The rear adjustment mechanism acts purely as a mechanical stop for end-position tuning and does not lock the load; for position holding without live air pressure, an external rod lock or a SAIL pneumatic lock cylinder is required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 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 SAIJ100X250-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SAIJ100X250-50 Is Used
Heavy-Duty Pressing
Delivers up to 7068 N of push force at 0.9 MPa for securely seating large bearings, with the 50 mm adjuster allowing precise bottoming-out depth control.
Product Changeover Stops
Ideal for packaging lines handling varied box sizes, letting operators quickly shift the travel end-stop within the 200-250 mm window without changing hardware.
Machine Setup Tuning
Provides on-the-fly retraction end-position calibration during initial commissioning, avoiding the need to machine custom external spacers for the 250 mm stroke.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50 the Right Cylinder?
Select this 100 mm bore when an application requires substantial thrust, such as the 5497 N push force at 0.7 MPa, combined with variable end-stop positioning. If you need less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136 N. The adjustable stroke is ideal for machine setups requiring frequent product changeovers, allowing you to dial in the 200-250 mm travel window without swapping out the cylinder or adding external stops.
Because the 250 mm stroke is significant, ensure adequate external guiding to prevent excessive side-loading on the 25 mm rod. This model uses PT tapered ports and omits the FB, CA, CB, and CR mounting styles, supporting only Basic, FA, LB, TC, FTC, TCM1, and TCM2 ISO 15552 mounts. As a standard unit without a magnet, it does not support CMSE or DMSE sensors unless specified with the -S option.
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 SAIJ100X250-50 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 screw acts as a mechanical stop that shortens the effective stroke from its 250 mm nominal length. You can trim the travel anywhere within a 200-250 mm window, but it does not lock the load without continuous air pressure.
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Standard models usually ship in 3-4 days.
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