Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 65mm 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
- Stroke65 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30
The AirTAC SAIJ40X65-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 65 mm travel by up to 30 mm. This creates a highly flexible 35-65 mm usable window, letting you fine-tune the retract end position at commissioning without swapping out the physical actuator. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for corrosion resistance and uses PT tapered port threads.
The rear adjuster functions strictly as a mechanical stop to set the travel end and relies on the integrated variable air cushions for end-of-stroke deceleration; it does not lock or hold the load without continuous live air pressure. For position holding without pneumatic pressure, you would need an external rod lock or a related AirTAC series like SAIL or BSAI. This 40 mm bore model includes dual sensor grooves on the extruded aluminum barrel, ready for CMSE reed or DMSE electronic sensors if a magnet is specified later.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 65 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 SAIJ40BX65-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×65 | 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 SAIJ40BX65-30 Is Used
End-Position Tuning
Dial in the exact 35-65 mm retract distance during machine commissioning to perfectly align a picking head without adding external shims.
Product Changeover
Quickly adjust the stroke by up to 30 mm on the line when switching between different product sizes or packaging formats.
Assembly Pressing
Set a precise mechanical stop for light-duty pressing tasks, relying on the 628 N output force to seat components accurately.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30 the Right Cylinder?
Select this 40 mm bore actuator when an application requires 628 N of push force at 0.5 MPa and demands precise variable end-stops, whereas stepping down to a 32 mm bore yields 402 N, and moving up to a 50 mm bore provides 982 N. The SAIJ40X65-30 is chosen over a fixed-stroke SAI cylinder when you need a 35-65 mm travel window to accommodate product changeovers or machine setup tweaks without installing external stops. To ensure a true ISO 15552 replacement match, verify the 40 mm bore, 65 mm stroke, 30 mm adjustment range, PT port threads, and the required mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because this model features a 16 mm rod and M12x1.25 thread, it handles moderate side loads well, though any long unsupported stroke exceeding 300 mm would 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 SAIJ40BX65-30 FAQ
It features a rear mechanical adjuster that lets you shorten the nominal 65 mm stroke by up to 30 mm, creating a usable travel window of 35-65 mm. The adjuster acts as a stop and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, the SAIJ40X65-30 provides 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 128 kgf.
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