Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 125mm 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
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-100S
The AirTAC SAIJ63X125-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end-of-travel position without adding external stops. With a 125 mm nominal stroke and a 100 mm adjustment range, this SKU provides a wide usable travel window of 25-125 mm. It delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it a robust choice for mid-range actuation.
This specific configuration includes a SUS420J2 stainless steel rod for superior corrosion resistance and a -S magnet for position sensing. It is fully compatible with AirTAC CMSE reed and DMSE electronic sensors fitted into the dual-side sensor grooves on the extruded aluminum barrel. The rear adjuster acts purely as a travel stop to set deceleration and end positions; it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 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 SAIJ63AX125-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×125 | 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 SAIJ63AX125-100S Is Used
Product Changeover Dials
Leverage the 25-125 mm travel window to rapidly reposition end stops when switching packaging lines to different carton sizes.
Machine Setup Tuning
Fine-tune the retract end-position at commissioning without swapping cylinders, ensuring precise alignment of 1559 N thrust movements.
Variable End Stops
Use the 100 mm rear adjuster to alter the effective stroke on automated assembly lines, accommodating multiple part dimensions on one station.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX125-100S the Right Cylinder?
Choose this 63 mm bore when your application requires approximately 1559 N of push force at 0.5 MPa. If you need less force, stepping down to a 50 mm bore yields 982 N, whereas stepping up to an 80 mm bore provides 2513 N. The 100 mm adjustment range is ideal for machines requiring rapid product-size changeovers, allowing you to dial in the exact 25-125 mm travel window on the fly instead of physically swapping out a fixed-stroke SAI cylinder.
Because the rear screw functions only as an end stop and the air cushions manage deceleration, this cylinder cannot hold a load without continuous air pressure. For dead-end holding requirements, consider the SAIL pneumatic lock or BSAI clamp-lock series. This model uses PT tapered ports (G3/8) and supports the SAIJ mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ63AX125-100S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It operates at speeds between 30 and 800 mm/s.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 125 mm nominal stroke by up to 100 mm. This creates a usable travel window of 25-125 mm, but the adjuster is a stop, not a lock, and cannot hold the load without live air.
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