Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100S
The AirTAC SAIJ63X120-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 20 to 120 mm window. Delivering 1559 N of push force and 1402 N of pull force at a 0.5 MPa operating pressure, it provides robust actuation for mid-range tasks. The barrel is extruded aluminum with sensor grooves on both sides, and this -S variant includes a magnet for use with CMSE reed and DMSE solid-state sensors.
This SKU is configured with an SUS420J2 stainless steel rod (option A) for enhanced durability against surface wear and light moisture. The rear adjuster acts purely as a mechanical stop to set the retract end position during commissioning or product changeover without swapping the cylinder. It is not a locking device, so live air pressure is required to hold the load in place. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 120 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 SAIJ63AX120-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×120 | 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 SAIJ63AX120-100S Is Used
Product Changeovers
Dial in the exact retract distance on the fly when switching between different package sizes on a packaging line, utilizing the full 20-120 mm travel window.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning without adding external physical stops or changing out the entire actuator.
Variable End Stops
Adjust the mechanical stopper to accommodate varying material thicknesses or positioning requirements in mid-force assembly operations.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-100S the Right Cylinder?
Choose this 63 mm bore cylinder when your application demands a wide variable end-stop range (up to 100 mm of adjustment) on a 120 mm nominal stroke, which is ideal for machines running multiple product sizes. If your process requires less force, stepping down to a 50 mm bore yields 982 N of push force at 0.5 MPa. If you need more power, stepping up to an 80 mm bore provides 2513 N at the same pressure. Because this model features a 120 mm stroke, side-load risks are minimal, but always ensure the M16x1.5 rod thread is aligned correctly during installation.
When matching this ISO 15552 cylinder for a replacement, verify the 63 mm bore, 120 mm stroke, 100 mm adjustment range, PT tapered port threads, and the -S magnet option. For applications that must hold a position mechanically without continuous air supply, select a related SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead of relying on the rear adjuster or the standard air cushions.
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 SAIJ63AX120-100S FAQ
At 0.5 MPa, 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 lets you mechanically shorten the effective stroke by up to 100 mm from the 120 mm nominal length, giving a usable travel window of 20 to 120 mm. The adjuster is a stop, not a lock, so it cannot hold the load without live air pressure.
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