Airtac SAIJ50 Adjustable Cylinder SAIJ50BX100-40
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX100-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 100mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 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 SAIJ50 Adjustable Cylinder SAIJ50BX100-40
The AirTAC SAIJ50X100-40 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 100 mm nominal stroke that can be dialed back by up to 40 mm, creating a precise 60-100 mm usable travel window for exact end-position tuning at commissioning. Delivering 982 N of push force at 0.5 MPa, it fits perfectly into mid-range pneumatic setups.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads with a G1/4 connection. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE reed or DMSE electronic switches later if positioning feedback becomes necessary.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX100-40 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX100-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX100-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX100-40 Is Used
End-Position Fine-Tuning
Dial in the exact 60-100 mm travel distance during machine commissioning to perfect part ejection without adding external mechanical stops.
Product Size Changeovers
Quickly adjust the cylinder's stroke on the fly to accommodate varying package sizes on a single production line.
Corrosive Assembly Stations
Leverage the SUS304 stainless steel rod for reliable actuation in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX100-40 the Right Cylinder?
Choose this 50 mm bore when an application requires around 982 N of push force at 0.5 MPa; stepping down to a 40 mm bore drops that output to 628 N, while an 80 mm bore jumps to 2513 N. The adjustable 60-100 mm travel window is ideal for machine setups requiring variable end stops or product-size changeovers without swapping cylinders. For a direct ISO 15552 replacement match, ensure you specify the 100 mm stroke, 40 mm adjustment, PT port thread, and the SUS304 (B) rod material.
Because the nominal stroke is 100 mm, side-load risks are minimal, but always guide the load externally for optimal seal life. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true pneumatic locking without pressure, consider the AirTAC 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 SAIJ50 Adjustable Cylinder SAIJ50BX100-40 FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 1374 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 100 mm nominal stroke by up to 40 mm. This creates a 60-100 mm usable travel window for fine-tuning the retract end position without replacing the cylinder.
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