Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 65mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-40S
The AirTAC SAIJ100X65-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 65 mm stroke by up to 40 mm. This creates a highly versatile 25-65 mm usable travel window, perfect for fine-tuning end positions during machine commissioning or product changeovers without swapping out the entire unit. It delivers robust performance with 3927 N of push force at 0.5 MPa and 7068 N at 0.9 MPa.
This variant features a SUS304 stainless steel rod (option B) for superior corrosion resistance and uses PT tapered port threads with a G1/2 connection. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet enables precise position detection with AirTAC CMSE reed and DMSE electronic solid-state switches. The adjustable rear stopper acts solely as a travel end deceleration device and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 65 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX65-40S Is Used
Machine Commissioning
Fine-tune the 25-65 mm travel window during setup to hit exact end positions without machining custom spacers or swapping cylinders.
Product Size Changeover
Rapidly adjust the rear stopper on automated packaging lines when running different product sizes, using the 40 mm trim range to adapt the stroke on the fly.
Variable End-Stop Forming
Dial in the exact retraction point for pressing or forming operations, leveraging the 7068 N push force at 0.9 MPa alongside the adjustable travel end.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-40S the Right Cylinder?
Choose this 100 mm bore adjustable-stroke model when your application requires substantial force—such as 3927 N at 0.5 MPa—but demands variable end-stops for rapid product size changeovers. If your process needs less push force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136 N. The rear adjuster allows quick commissioning fine-tuning without adding external stops, unlike a fixed-stroke SAI cylinder. Mounting options include the reduced SAIJ set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Remember that the rear adjuster and air cushions only set the travel end; they do not function as a lock or brake. For load-holding without live air pressure, consider the SAIL pneumatic lock, BSAI clamp-lock cylinder, or an external pilot-operated check valve. This unit is dimensionally interchangeable per ISO 15552, featuring a 25 mm rod diameter, M20x1.5 rod thread, 36 mm cushion, and an operating speed of 30-800 mm/s.
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 SAIJ100 Adjustable Cylinder SAIJ100BX65-40S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The nominal 65 mm stroke can be adjusted backward by up to 40 mm via a rear stopper screw, creating a usable travel window of 25-65 mm. This allows you to set the exact end position at commissioning without adding external stops, though the adjuster only stops travel and does not hold the load without live air.
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