Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm 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
- Stroke550 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-40
The AirTAC SAIJ100X550-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 5497N of push force at 0.7 MPa, utilizing a 25mm piston rod and G1/2 porting. The integrated rear stopper screw allows you to shorten the effective travel, creating a 510-550mm usable stroke window without requiring external stops.
This unit uses a SUS304 stainless steel rod for superior corrosion resistance and includes variable air cushions at both ends to manage kinetic energy. The extruded aluminum barrel features dual-sided sensor grooves, ready for CMSE reed or DMSE electronic switches if a magnet is added later. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 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 SAIJ100BX550-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | 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 SAIJ100BX550-40 Is Used
Variable End-Stop Machining
Dial in the exact clamping depth on machining centers across multiple part batches by adjusting the stroke window from 510 to 550mm.
Line Changeover Setup
Rapidly reconfigure end-of-stroke positions on packaging lines during product size transitions without swapping out the entire cylinder body.
Heavy-Duty Positioning
Leverage the 5497N push force at 0.7 MPa to move heavy pallets or assemblies, fine-tuning the final resting position via the rear screw.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-40 the Right Cylinder?
Choose this 100mm bore when an 80mm bore (providing 3518N push at 0.7 MPa) cannot meet your force requirements, but you want to avoid stepping up to a 125mm unit. The 40mm adjustment range is ideal for fine-tuning end positions during machine commissioning or product changeover, whereas a fixed SAI cylinder locks you into a single exact dimension.
Because the nominal stroke is 550mm, an external guide is recommended to prevent excessive side-loading on the rod thread. The rear adjuster acts only as a travel stop and does not hold the load without live air; for dead-air load holding, consider an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 replacement, specify the 100mm bore, 550mm stroke, 40mm adjustment, PT tapered ports, SUS304 (B) rod, and no magnet.
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 SAIJ100BX550-40 FAQ
The rear adjuster acts as a mechanical stop that trims the effective travel. For this model, the nominal 550mm stroke can be dialed back by up to 40mm, giving a usable travel window of 510-550mm for precise end-position tuning.
At an operating pressure of 0.7 MPa, the SAIJ100X550-40 provides 5497N of push force and 3681N of pull force. It can reach a maximum push force of 7068N at 0.9 MPa.
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