Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20S 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 SAIJ100BX65-20S
The AirTAC SAIJ100X65-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa and features a 65mm nominal stroke that can be dialed back by up to 20mm, providing a precise 45-65mm usable travel window for exact end-position tuning. This rear screw mechanism allows you to fine-tune the retract stroke at commissioning without swapping the cylinder or adding external stops.
Built with a SUS304 stainless steel rod (option B) and a PT tapered port, this model includes a magnet for position sensing. The sensor grooves on both sides of the extruded aluminum barrel accept AirTAC CMSE reed and DMSE electronic solid-state switches. It uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and relies on adjustable air cushions at both ends to decelerate the load, though neither the cushion nor the rear adjuster acts as a lock to hold the load without live air.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20S |
|---|---|
| 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 SAIJ100BX65-20S
| 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 SAIJ100BX65-20S Is Used
Machine Changeover
Dial in the 45-65mm travel window during product size transitions without physically replacing the cylinder or adding external stopper blocks.
Commissioning Fine-Tuning
Use the rear adjuster to set the exact retract end-position during initial setup, compensating for mechanical tolerances on the line.
High-Force Positioning
Leverage the 3927N push force at 0.5 MPa to move heavy jigs or fixtures into their final retracted position with precise stop control.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20S the Right Cylinder?
Choose this 100mm bore when your application requires higher thrust than an 80mm bore (which provides 2513N push at 0.5 MPa) but does not need the full 6136N force of a 125mm cylinder. The adjustable stroke is ideal for machine setups and product changeovers where the exact end-stop varies slightly, replacing the need for a fixed-stroke SAI cylinder. When matching this for an ISO 15552 replacement, verify the 65mm stroke, 20mm adjustment range, PT G1/2 port, and the -S magnet requirement. For any stroke of 300mm or more, an external guide is recommended to prevent excessive side-loading on the rod, though this 65mm stroke is well within safe limits.
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 SAIJ100BX65-20S FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective stroke back by up to 20mm. This turns the 65mm nominal stroke into a 45-65mm usable travel window, allowing precise end-position tuning without changing the cylinder.
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