Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-40
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-40
The AirTAC SAIJ40X100-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 40 mm. This creates a precise 60-100 mm usable stroke window, enabling exact end-position tuning at commissioning without swapping the cylinder or adding external stops. It delivers 879 N of push force at 0.7 MPa, making it well-suited for medium-duty handling tasks.
This variant is equipped with a SUS304 stainless steel rod for superior corrosion resistance. It uses a PT tapered port thread and operates without a magnet. The rear adjuster acts purely as a mechanical stop to set the travel end, meaning it does not hold the load without live air pressure. For load-holding requirements without continuous pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX100-40 Is Used
Changeover Adjustment
Dial in the 60-100 mm travel window during product size changeovers to set new retract positions without physically swapping out the cylinder body.
End-Position Tuning
Fine-tune the exact retract stop point during machine commissioning to perfect part placement and eliminate the need for external mechanical stops.
Corrosive Handling
Leverage the SUS304 stainless steel rod in washdown or mildly corrosive manufacturing environments where standard carbon steel rods would degrade.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-40 the Right Cylinder?
Choose this 40 mm bore adjustable cylinder when your application requires fine-tuning the retract end-position during machine setup or product changeover. If your process needs less force, stepping down to a 32 mm bore yields 563 N at 0.7 MPa, while stepping up to a 50 mm bore provides 1374 N for heavier payloads. The adjustable travel is ideal for accommodating product-size variations on a line without machining new hard stops.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 100 mm nominal stroke, PT port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because this SKU lacks the -S magnet option, it cannot host CMSE or DMSE sensors. At 100 mm stroke, side-load risks are minimal, but long unsupported strokes still require an external guide.
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 SAIJ40 Adjustable Cylinder SAIJ40BX100-40 FAQ
At a 0.7 MPa operating pressure, this 40 mm bore cylinder generates 879 N of push force and 740 N of pull force. It can deliver up to 1130 N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 100 mm nominal stroke by up to 40 mm. This provides a usable travel window of 60 to 100 mm, but it only sets the end position and does not lock or hold the load without live air pressure.
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