Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-40
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 110mm 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
- Stroke110 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-40
The AirTAC SAIJ40X110-40 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. With a 110 mm nominal stroke, this yields a usable travel window of 70-110 mm, enabling precise end-position tuning at commissioning without swapping the cylinder or adding external stops. It delivers 628 N of pull force at 0.5 MPa and pushes 879 N at 0.7 MPa.
This SKU ships with a SUS304 stainless steel rod (code B) for superior corrosion resistance and ships with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of AirTAC switches. Note that the rear adjuster acts purely as a travel stop and works with the adjustable air cushions to decelerate the load; it does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 110 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 SAIJ40BX110-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×110 | 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 SAIJ40BX110-40 Is Used
Machine Setup & Commissioning
Dial in the exact 70-110 mm travel window during initial machine build, trimming up to 40 mm to perfect the end position without machining external stoppers.
Product-Size Changeover
Quickly adapt automated lines to new part lengths by adjusting the rear stopper screw, reducing downtime when switching between product variants.
Variable End-Stop Clamping
Apply up to 879 N of push force at 0.7 MPa to position parts accurately, using the fine-tuned stroke limit to prevent overtravel damage.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-40 the Right Cylinder?
Choose this 40 mm bore when you need the 628 N pull force (at 0.5 MPa) and a highly variable end-stop, stepping up from a 32 mm bore (345 N pull) or down from a 50 mm bore (825 N pull). The adjustable stroke is ideal for machine setups requiring frequent product-size changeovers, replacing the need for a fixed-stroke SAI cylinder when the exact end position is not yet finalized.
For an exact ISO 15552 replacement match, verify the 40 mm bore, 110 mm stroke, 40 mm adjustment range, PT port threads, and the SUS304 rod material. Because the stroke is 110 mm, side-load risks are minimal, but long unsupported strokes still require an external guide. For load-holding without live pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock.
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 SAIJ40BX110-40 FAQ
It features a rear adjusting screw that lets you shorten the 110 mm nominal stroke by up to 40 mm, providing an adjustable travel window of 70-110 mm to fine-tune the retract end position.
At 0.5 MPa it provides 628 N of pull force and 402 N of push force. At 0.7 MPa, the push force increases to 879 N.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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