Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-40S
The AirTAC SAIJ100X145-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 105-145 mm usable travel window. It delivers 3927 N of push force at 0.5 MPa and integrates a -S magnet for position sensing. The piston rod is constructed from SUS304 stainless steel (code B), offering superior corrosion resistance for harsh or washdown environments.
This adjustable-stroke design allows operators to fine-tune the retract end position during commissioning without swapping the cylinder or adding external stops. The rear adjuster acts purely as a travel stop and works alongside the variable air cushions at both ends to decelerate the load. It does not hold the load without live air; for pilot-operated locking, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 145 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 SAIJ100BX145-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×145 | 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 SAIJ100BX145-40S Is Used
Product Changeover
Dial in the exact retract position within the 105-145 mm window during line changeovers without replacing the cylinder or adding external mechanical stops.
End-Stop Tuning
Fine-tune the final end position at machine commissioning to achieve precise pressing or clamping depth using the rear adjustment screw.
Corrosive Environments
Leverage the SUS304 stainless steel rod and heavy 3927 N push force for robust actuation in food processing or chemical washdown areas.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-40S the Right Cylinder?
Choose this 100 mm bore when an application requires heavy thrust (3927 N at 0.5 MPa) that exceeds the 1559 N capacity of a 63 mm cylinder. The 145 mm nominal stroke with a 40 mm adjustment range is ideal for product changeovers on a line, letting you dial back the end stop by up to 40 mm without mechanical rework. Because the stroke is 145 mm, side-load is less of a concern, but long unsupported strokes still need an external guide.
When specifying an ISO 15552 replacement, match the 100 mm bore, 145 mm stroke, 40 mm adjustment, PT tapered port thread, and the -S magnet. This SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR. The integrated -S magnet works seamlessly with AirTAC CMSE reed switches and DMSE solid-state sensors.
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 SAIJ100BX145-40S 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 0.9 MPa, the push force increases to 7068 N.
The rear adjuster allows you to shorten the 145 mm nominal stroke by up to 40 mm, creating a usable travel window of 105-145 mm. The adjuster acts as a mechanical stop to decelerate the load and does not hold the load without live air pressure.
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