Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100S 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 SAIJ63AX375-100S
The AirTAC SAIJ63X375-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 1559N of push force at 0.5 MPa and features a 375mm nominal stroke that can be fine-tuned down by up to 100mm, yielding a usable travel window of 275-375mm. This wide adjustment band is ideal for product-size changeovers on automated lines, letting you reset the end position during commissioning without swapping hardware.
This SKU is built with an SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing. It accepts AirTAC CMSE reed and DMSE electronic solid-state switches in the dual-side sensor grooves. Fluid ports are PT tapered G3/8 threads, and the extruded aluminum barrel integrates adjustable air cushions at both ends to decelerate the moving load smoothly.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100S |
|---|---|
| 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 SAIJ63AX375-100S
| 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 SAIJ63AX375-100S Is Used
Variable Product Changeover
Dial in the 275-375mm travel window during format changes on packaging lines, using the rear screw to set exact retraction distances for different carton sizes.
Machine Setup Commissioning
Fine-tune the end-stop position during initial machine build without machining custom spacers, leveraging the 100mm adjustment range to dial in the exact clamping distance.
Adjustable Diverting Arm
Actuate a routing gate on a conveyor where the required reach varies by product family, using the magnetic piston and DMSE sensors to confirm the adjusted end position.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX375-100S the Right Cylinder?
Select this 63mm bore when an application requires moderate thrust (1559N push at 0.5 MPa) but demands highly flexible end-positioning. If you need less force, the 50mm bore offers 982N; if you need more, the 80mm bore provides 2513N. Choose the SAIJ adjustable-stroke format over the fixed-stroke SAI when a machine handles varying product sizes and requires rapid, tool-free stopper tuning rather than fabricating external hard stops.
Because the 375mm stroke is relatively long, ensure adequate external guidance to prevent excessive side-loading on the M16x1.5 rod thread. Note that the rear adjuster and air cushions act only as travel stops and deceleration devices; they do not hold the load without live air. For true pneumatic locking without pressure, consider the SAIL or BSAI series. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ63AX375-100S FAQ
At 0.5 MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At 0.7 MPa, the push force increases to 2182N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from the 375mm nominal length by up to 100mm, creating a usable travel window of 275-375mm. It trims the retract end-position without requiring cylinder replacement.
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