Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-20
The AirTAC SAIJ100X750-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 730 to 750 mm. Delivering 3927 N of push force at 0.5 MPa (up to 7068 N at 0.9 MPa), it handles heavy-duty positioning tasks. This specific SKU features a SUS304 stainless steel rod for superior corrosion resistance and utilizes PT tapered ports.
Unlike a fixed-stroke SAI cylinder, this model integrates an external stopper screw at the rear cap that fine-tunes the retract end position during commissioning or product changeovers without adding external stops. The adjuster acts purely as a travel stop and works alongside the adjustable air cushions at both ends; it does not lock the load. For position holding without live air pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 750 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 SAIJ100BX750-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×750 | 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 SAIJ100BX750-20 Is Used
Heavy-Duty Positioning
Ideal for large industrial presses requiring precise end-stop tuning, using the 20 mm adjustment window to dial in the exact 730-750 mm travel distance during setup.
Product Changeover Diverter
Enables rapid reconfiguration of packaging lines for different carton sizes by adjusting the retract position on the fly without swapping out the entire actuator.
Automated Assembly Press
Provides reliable 3927 N push force at 0.5 MPa for seating bearings or components, with the rear stopper allowing micro-adjustments to prevent over-travel.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX750-20 the Right Cylinder?
Select this 100 mm bore cylinder when an application requires substantial thrust (3927 N at 0.5 MPa) alongside precise end-position tuning. If your process demands less force, stepping down to an 80 mm bore yields 2513 N of push force, whereas upsizing to a 125 mm bore provides 6136 N. The adjustable 20 mm window is ideal for machine setups requiring variable end stops rather than a fixed SAI stroke.
When replacing an ISO 15552 cylinder, verify the 100 mm bore, 750 mm stroke, 20 mm adjustment range, PT port threads, and SUS304 rod material. Note that this SKU omits the magnet (-S), so position sensing via CMSE reed or DMSE electronic sensors is not supported. Furthermore, with a 750 mm stroke, the 25 mm rod and M20x1.5 thread still require an external guide to prevent excessive side-loading on the seals.
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 SAIJ100BX750-20 FAQ
At 0.5 MPa operating pressure, the push force is 3927 N and the pull force is 3681 N. At the maximum recommended pressure of 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the effective nominal 750 mm stroke by up to 20 mm, providing a usable travel window of 730 to 750 mm. This stopper only sets the end position and does not hold the load without live air pressure.
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