Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-75S 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 SAIJ63AX145-75S
The AirTAC SAIJ63X145-75-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 70 to 145 mm, allowing you to dial back the nominal 145 mm stroke by up to 75 mm during commissioning. Delivering 1559 N of push thrust and 1402 N of pull thrust at 0.5 MPa, it handles robust actuation tasks. This version includes a magnet for position sensing and uses a SUS420J2 stainless steel rod for enhanced durability.
The extruded aluminum barrel incorporates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It features PT tapered port threads (G3/8) and adjustable air cushions at both ends. The rear adjuster acts solely as a mechanical stop to fine-tune the end position without needing external stops, but it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-75S |
|---|---|
| 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 SAIJ63AX145-75S
| 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 SAIJ63AX145-75S Is Used
Variable End-Stop Tuning
Dial in the exact 70 to 145 mm travel distance during machine commissioning to accommodate different product lengths without changing the cylinder.
Product Changeover Setup
Quickly adjust the retract end-position on packaging lines when switching between box sizes, reducing downtime and eliminating external stop hardware.
Robust Actuation Force
Leverage 1559 N of push thrust at 0.5 MPa for medium-duty assembly tasks, utilizing the SUS420J2 stainless steel rod for environmental resilience.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-75S the Right Cylinder?
Choose this 63 mm bore when you need more force than a 50 mm cylinder (982 N push at 0.5 MPa) but less bulk than an 80 mm option (2513 N push). The adjustable 70-145 mm window is ideal for product changeovers, letting you set variable end-stops on the fly rather than swapping to a fixed-stroke SAI cylinder. For an exact ISO 15552 replacement match, specify bore 63, stroke 145, 75 mm adjustment, PT G3/8 ports, the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), and a magnet (-S). Because the 145 mm stroke is relatively short, side-load concerns are minimal, but always guide the load if it is heavy or asymmetric. If your application requires true load-holding without live air, use an SAIL pneumatic lock or BSAI clamp-lock cylinder instead of relying on the rear stopper.
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 SAIJ63AX145-75S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push thrust and 1402 N of pull thrust. At the maximum 1.0 MPa pressure, it delivers up to 318 kgf.
The rear mechanical adjuster allows you to shorten the effective stroke from 145 mm down to as little as 70 mm. It acts as a travel stop for fine-tuning end positions but does not lock or hold the load without continuous air pressure.
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