Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50 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 SAIJ100BX300-50
The AirTAC SAIJ100X300-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 250-300 mm. Delivering a push force of 3927 N and a pull force of 3681 N at 0.5 MPa, it handles heavy positioning tasks with precision. The unit features a SUS304 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads.
Because the adjuster acts purely as a retract-end stop, it fine-tunes end positions during commissioning without requiring cylinder swaps or external stops. It is crucial to note that this stopper does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series. The extruded aluminum barrel includes dual sensor grooves, though no magnet is installed on this specific configuration.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50 |
|---|---|
| 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 SAIJ100BX300-50
| 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 SAIJ100BX300-50 Is Used
Variable End-Stop Machining
Dial in the 250-300 mm travel window to fine-tune cutting or pressing depths on the fly without swapping out tooling cylinders.
Product Changeover Lines
Quickly adjust the retract end-position to accommodate different package sizes or pallet dimensions during line transitions.
Heavy Assembly Commissioning
Leverage the 3927 N push force at 0.5 MPa to seat heavy components precisely, using the rear stopper to perfect the final position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-50 the Right Cylinder?
Choose this 100 mm bore when 80 mm falls short—delivering 3927 N of push force at 0.5 MPa compared to the 80 mm bore's 2513 N. An adjustable stroke is ideal for machine setups requiring variable end-stops, allowing you to dial in the 250-300 mm travel window during product changeovers rather than relying on a fixed-stroke SAI cylinder.
For a direct ISO 15552 replacement match, specify a 100 mm bore, 300 mm nominal stroke, 50 mm adjustment range, PT ports, and your required mounting from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Since the stroke is 300 mm, the 25 mm rod diameter and M20x1.5 rod thread provide robust support, but an external guide is strongly recommended to manage side loads on longer unsupported travels.
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 SAIJ100BX300-50 FAQ
At 0.5 MPa, it provides 3927 N of push force and 3681 N of pull force. The operating speed range for this 100 mm bore cylinder is 30-800 mm/s.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 50 mm, providing a usable travel window of 250-300 mm. It only decelerates and sets the travel end; it does not lock or hold the load without continuous air pressure.
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