Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-30 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 SAIJ63AX120-30
The AirTAC SAIJ63X120-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end-of-travel position during commissioning. With a 120 mm nominal stroke and a 30 mm adjustment range, it provides a usable travel window of 90 to 120 mm. This bore size delivers 1559 N of push force at 0.5 MPa, making it well-suited for moderate-to-heavy actuation tasks.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. The rear adjuster acts purely as a mechanical stop to set the retraction depth and does not lock the load without continuous air pressure. It uses PT tapered ports and includes variable air cushions at both ends to manage impact deceleration.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-30 |
|---|---|
| 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 SAIJ63AX120-30
| 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 SAIJ63AX120-30 Is Used
Machine Changeover
Dial in the 90-120 mm travel window during product size transitions to set new retraction depths without replacing the cylinder.
End-Position Tuning
Fine-tune the exact end-of-stroke stop during commissioning to perfect mechanical alignment without adding external spacers.
Assembly Actuation
Leverage the 1559 N push force at 0.5 MPa to drive pressing or clamping operations that require precise depth control.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX120-30 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; if you need more, stepping up to an 80 mm bore provides 2513 N. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers without swapping cylinders, unlike a fixed-stroke SAI model. Remember that the rear adjuster is a stop, not a lock, so load-holding without live air requires a SAIL or BSAI variant.
For an exact ISO 15552 dimensional replacement, match the 63 mm bore, 120 mm stroke, 30 mm adjustment range, PT port thread, and your required mounting hardware. SAIJ supports a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Since this unit lacks the -S magnet option, it cannot host CMSE or DMSE sensors for position detection.
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 SAIJ63AX120-30 FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 30 mm. This creates a usable travel window of 90 to 120 mm, allowing you to set the exact retraction end position without changing the cylinder.
At 0.5 MPa operating pressure, it provides 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 318 kgf.
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