Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50S
The AirTAC SAIJ100X300-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 300 mm nominal stroke by up to 50 mm for a 250-300 mm usable travel window. This fine-tuning capability is ideal for dialing in end positions during commissioning without adding external stops. It delivers 5497 N of push force at 0.7 MPa and features a SUS304 stainless steel rod for corrosion resistance.
The extruded aluminum barrel includes sensor grooves on both sides, and the -S magnet is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster functions purely as a travel stop to set deceleration, not as a lock, and the 25 mm rod with an M20x1.5 thread provides robust resistance to side loading.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAIJ100BX300-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SAIJ100BX300-50S Is Used
Product Changeover
Quickly adapt automated packaging lines to different carton sizes by dialing in the 250-300 mm travel window without swapping out the cylinder.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning to achieve exact mechanical timing without fabricating custom external stoppers.
Variable End Stops
Adjust the retract position on machining stations to accommodate varying raw material thicknesses on the fly using the rear stopper screw.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50S the Right Cylinder?
Choose this adjustable SAIJ variant over a fixed SAI model when your machine setup requires variable end stops or frequent product-size changeovers that demand precise physical travel limits. If your application needs less force, stepping down to an 80 mm bore yields 3518 N at 0.7 MPa; conversely, moving up to a 125 mm bore provides 8590 N. Because the total stroke is 300 mm, an external guide is recommended to prevent rod sag and handle side loads over the extended travel.
For a true ISO 15552 replacement match, verify the 100 mm bore, 300 mm stroke, 50 mm adjustment range, PT tapered port threads, and the -S magnet requirement. Remember that the rear adjuster and air cushions do not hold the load without live air pressure; for load-holding without continuous supply, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ100BX300-50S FAQ
At 0.7 MPa operating pressure, this 100 mm bore cylinder provides 5497 N of push force and 3681 N of pull force. At its maximum rated pressure of 1.0 MPa, it can deliver up to 801 kgf.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke from its 300 mm nominal length down to 250 mm. This creates a 250-300 mm adjustable travel window for fine-tuning end positions without replacing the cylinder.
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