Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-100
The AirTAC SAIJ63X300-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 200-300 mm usable travel window. Delivering 1559 N of pull force at 0.5 MPa, it is built with an SUS420J2 stainless steel rod (code A) for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
Equipped with PT tapered port threads and a G3/8 air supply, this unit operates at speeds from 30-800 mm/s. The rear adjuster acts purely as a mechanical stop to set the retraction end position and cannot hold a load without live air pressure. For load-holding requirements, an external pilot-operated check valve or a related SAIL lock cylinder is required.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 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 SAIJ63AX300-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×300 | 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 SAIJ63AX300-100 Is Used
Variable End-Stop Positioning
Dial in the exact retraction point within the 200-300 mm window during machine commissioning to accommodate different product lengths without mechanical rebuilds.
Product Size Changeover
Quickly adjust the rear stopper on the assembly line when switching between product variants, leveraging the 100 mm trim range to handle size variations seamlessly.
Long-Stroke Assembly Press
Utilize the 300 mm stroke for reaching deep into machinery, using the adjustable stop to precisely set the pressing depth without relying on hard external fixtures.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX300-100 the Right Cylinder?
Choose this 63 mm bore when you need 1559 N pull force at 0.5 MPa and a highly flexible 200-300 mm end-stop range. If your application requires less force, stepping down to a 50 mm bore yields 825 N pull. The 100 mm adjustment window is ideal for product changeovers on a line, allowing you to fine-tune the retraction point without swapping the cylinder or adding external stops. Unlike a fixed-stroke SAI, this SAIJ model accommodates variable part sizes on the fly.
Because the nominal stroke is 300 mm, the 20 mm rod diameter and M16x1.5 rod thread need external guidance to prevent excessive side-loading on the seal. This configuration uses PT tapered ports and omits a magnet. It supports the reduced SAIJ mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ63AX300-100 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. It can reach a maximum push force of 2805 N at 0.9 MPa.
The rear adjuster screw lets you trim the effective stroke back by up to 100 mm, creating a 200-300 mm usable travel window. It acts as a mechanical stop to fine-tune the end position and does not lock the load without continuous air pressure.
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Covers non-human-caused product damage.
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