Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 145mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ63 mm
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100
The AirTAC SAIJ63X145-100 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 145 mm stroke that can be dialed back by up to 100 mm, creating a highly versatile 45-145 mm usable travel window for precise positioning. Delivering 2182 N of push force at 0.7 MPa, it handles demanding actuation tasks.
This variant uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. The rear adjuster acts purely as a mechanical stop to set the end position, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 145 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×145 | 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100 Is Used
Variable End-Stop Tuning
Dial in the exact 45 to 145 mm travel distance during machine commissioning to accommodate varying material thicknesses without adding external mechanical stops.
Product Size Changeover
Quickly reset the cylinder's effective stroke on automated lines processing different package lengths, leveraging the 100 mm adjustment range to handle multiple formats.
Corrosion-Resistant Actuation
Utilize the SUS420J2 stainless steel rod in environments with higher humidity or washdown needs, ensuring reliable positioning over a wide adjustable travel window.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100 the Right Cylinder?
Choose this 63 mm bore cylinder when an application requires a wide variable stroke window during commissioning or frequent product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your process requires less force, stepping down to a 50 mm bore yields 1374 N of push force at 0.5 MPa; for heavier loads, an 80 mm bore provides 3518 N at 0.7 MPa.
Because the 145 mm nominal stroke is under 300 mm, side-load stress on the M16x1.5 rod thread is manageable without an external guide. To replace this unit, match the 63 mm bore, 145 mm stroke, 100 mm adjustment range, PT G3/8 port, and Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting interface. Note that for any load-holding requirements without live air, a separate SAIL or BSAI locking cylinder is required, as the adjuster here is strictly a travel stop.
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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-100 FAQ
It features a rear adjusting screw that mechanically limits the piston's retract travel. For this model, you can trim the 145 mm nominal stroke back by up to 100 mm, resulting in a usable travel window of 45 to 145 mm. The adjuster is a stop, not a lock, and requires live air to maintain position.
At a standard operating pressure of 0.7 MPa, this 63 mm bore double-acting cylinder generates 2182 N of push force and 1402 N of pull force. It can deliver a maximum push force of 2805 N at 0.9 MPa.
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