Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-40S
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX65-40S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke65 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 SAIJ40 Adjustable Cylinder SAIJ40AX65-40S
The AirTAC SAIJ40X65-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 25-65 mm usable travel window, allowing you to dial back the 65 mm nominal stroke by up to 40 mm during commissioning without adding external stops.
This specific SKU includes an -S magnet for position sensing with AirTAC CMSE reed and DMSE electronic switches. It is built with an SUS420J2 stainless steel rod (option A) for corrosion resistance and uses PT tapered port threads. The mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-40S |
|---|---|
| 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-40S
| 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 SAIJ40AX65-40S Is Used
Product Changeover
Dial in the 25-65 mm travel window on the fly when switching between packaging formats without swapping out the entire cylinder.
End-Stop Tuning
Fine-tune the exact retract position at machine commissioning using the rear screw, avoiding the need to bolt on external mechanical stops.
Assembly Clamping
Provides 879 N of clamping force at 0.7 MPa with an adjustable reach, perfect for accommodating slight variations in component heights.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX65-40S the Right Cylinder?
If your process requires less force, stepping down to a 32 mm bore yields 402 N at 0.5 MPa. The rear adjuster acts purely as a travel stop to fine-tune the 25-65 mm window; it does not hold the load without live air. For true fail-safe load holding, select the SAIL or BSAI series instead.
As a dimensionally interchangeable ISO 15552 cylinder, it replaces any standard 40x65 profile cylinder on a machine. To match this exact configuration, specify the PT port thread, SUS420J2 rod material, the -40 mm adjustment code, and the -S magnet option. The 16 mm rod and M12x1.25 thread provide good side-load capacity for this short stroke.
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 SAIJ40AX65-40S FAQ
At 0.7 MPa, the push force increases to 879 N.
The rear adjuster allows you to shorten the 65 mm nominal stroke by up to 40 mm, creating a 25-65 mm usable travel window. It functions as a travel stop, not a lock, so it cannot hold a load without live air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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