Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX55-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 55mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40S
The AirTAC SAIJ100X55-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 15 to 55 mm, allowing you to dial back the nominal 55 mm stroke by up to 40 mm during commissioning.
This model includes a magnet for position sensing, operating seamlessly with AirTAC CMSE reed and DMSE electronic switches mounted into the dual-side sensor grooves. The rear adjuster functions strictly as a travel stop to fine-tune deceleration and end positions without external stops, but it does not hold the load without live air pressure. Mounting options include the standard SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 55 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×55 | 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 SAIJ100BX55-40S Is Used
Product Changeover
Quickly dial in the 15-55 mm travel window to accommodate varying package sizes on a packaging line without swapping out the entire actuator.
End-Stop Tuning
Fine-tune the final retract position during machine commissioning to achieve exact pressing or clamping distances without adding external mechanical stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-40S the Right Cylinder?
Choose this 100 mm bore cylinder when an application demands high thrust (3927 N at 0.5 MPa) combined with variable end-position tuning. If the force is excessive, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. The adjustable stroke is ideal for machine setups requiring frequent product-size changeovers, whereas a fixed SAI cylinder suits static end-stops. For load-holding without continuous air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock.
When replacing an ISO 15552 cylinder, verify the 100 mm bore, 55 mm nominal stroke, 40 mm adjustment range, G1/2 port, PT thread type, and the required -S magnet. The robust 25 mm rod and M20x1.5 thread handle significant side loads, though external guides are recommended if the stroke approaches or exceeds 300 mm.
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 SAIJ100BX55-40S FAQ
At the maximum operating pressure of 1.0 MPa, it delivers up to 801 kgf.
The rear adjuster acts as a mechanical stop that trims the effective travel. For this 55 mm stroke model, the -40 code means you can shorten the stroke by up to 40 mm, creating a usable travel window of 15 to 55 mm to fine-tune the end position.
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