Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30S 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 SAIJ100BX550-30S
The AirTAC SAIJ100X550-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 7068N of push force at 0.9 MPa, utilizing a 25mm piston rod and G1/2 ports. The built-in stopper provides a usable travel window of 520 to 550mm, allowing you to dial back the nominal 550mm stroke by up to 30mm.
Equipped with a SUS304 stainless steel rod (material code B), this variant is tailored for environments where corrosion resistance is critical. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports position detection via AirTAC CMSE reed or DMSE electronic solid-state switches.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30S |
|---|---|
| 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 SAIJ100BX550-30S
| 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 SAIJ100BX550-30S Is Used
Product Changeover
Dial in the exact end-stop distance on the fly when switching a packaging line to a different carton size, saving setup time.
Precision Positioning
Fine-tune the 520-550mm travel window during commissioning to perfect the pressing distance without adding external mechanical stops.
Heavy Payload Shifting
Leverage the 7068N push force to move heavy pallets or chassis components, using the adjuster to limit the final travel distance.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30S the Right Cylinder?
Choose this 100mm bore cylinder when a 50mm bore (1374N push at 0.5 MPa) lacks the power for heavy positioning tasks, but a 125mm unit would be excessive. The adjustable stroke is ideal for machine setups requiring fine end-position tuning during product changeovers without swapping out the physical cylinder. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because this unit features a 550mm stroke, the extended travel demands an external guide to prevent excessive side-loading on the rod. Remember that the rear adjuster acts only as a travel stop, not a lock; the cylinder cannot hold a load without live air pressure. For true pneumatic locking, consider the SAIL or BSAI series instead.
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 SAIJ100BX550-30S FAQ
At an operating pressure of 0.9 MPa, this 100mm bore cylinder provides a push force of 7068N and a pull force of 3681N. The maximum theoretical force at 1.0 MPa is 801 kgf.
The rear adjuster screw allows you to shorten the effective stroke from the nominal 550mm down to 520mm. This stopper only limits the travel end and does not lock the load; live air pressure is still required to hold position.
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