Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 375mm 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
- Stroke375 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100
The AirTAC SAIJ63X375-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 375 mm nominal stroke that can be fine-tuned down by up to 100 mm, yielding a usable travel window of 275-375 mm. This allows operators to dial in exact end positions during commissioning without swapping hardware. In the 63 mm bore class, it delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa.
This SKU is built with an SUS420J2 stainless steel rod (option A) for superior corrosion resistance and uses PT tapered port threads with a G3/8 connection. The extruded aluminum barrel includes sensor grooves on both sides. Because the 375 mm stroke is relatively long, the 20 mm rod diameter should be paired with an external guide to prevent excessive side-loading on the piston.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 375 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 SAIJ63AX375-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×375 | 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 SAIJ63AX375-100 Is Used
Product Size Changeovers
Quickly modify the extended reach from 375 mm down to 275 mm on packaging lines handling varying container sizes without changing the cylinder.
Commissioning Calibration
Fine-tune the retract end-position during machine setup to perfect the alignment of tooling, avoiding the need for external stopper blocks.
Variable End-Stop Positioning
Ideal for automated assembly stations where the rear stopper screw adjusts the stroke window on the fly to accommodate different part lengths.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100 the Right Cylinder?
Select this 63 mm bore cylinder when an application requires precise variable end-stops; if you need less force, stepping down to a 50 mm bore yields 982 N of push force at 0.5 MPa. For heavier loads, an 80 mm bore provides 2513 N. The SAIJ63X375-100 uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. To match this exact ISO 15552 replacement, verify the 375 mm stroke, 100 mm adjustment range, PT G3/8 port, and no magnet (-S omitted).
Remember that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure. For applications requiring true load-holding without continuous air, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ63AX375-100 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At a maximum 1.0 MPa, it can deliver up to 318 kgf.
The rear adjuster screw allows you to trim the effective travel back by up to 100 mm. This creates a usable stroke window of 275 mm to 375 mm, letting you set the exact end position without adding external stops.
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