Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX30-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX30-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 30mm 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
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX30-20
The AirTAC SAIJ63X30-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 30 mm stroke with an adjustment range of 20 mm, yielding a usable travel window of 10-30 mm for precise end-position tuning during commissioning. At 0.5 MPa, it delivers 1559 N of push force and 1402 N of pull force.
This variant uses a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides, compatible with AirTAC CMSE reed and DMSE electronic sensors if a magnet is added later. The rear adjuster acts purely as a mechanical stop to fine-tune travel and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX30-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX30-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 30 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 SAIJ63AX30-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×30 | 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 SAIJ63AX30-20 Is Used
Precision Clamping Setup
Dial in the exact clamping distance on machining fixtures by adjusting the rear stopper from 10 to 30 mm, ensuring perfect part contact without external spacers.
Product Changeover
Quickly adapt the end-of-stroke position on packaging lines when switching to a different product size, using the 20 mm adjustment window to reset the travel limit.
Machine Commissioning
Fine-tune the final resting position during initial machine build and commissioning, absorbing mechanical tolerances by trimming the stroke back from the nominal 30 mm.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX30-20 the Right Cylinder?
Choose this 63 mm bore if you need to step up from a 50 mm bore (which provides 982 N push at 0.5 MPa) to gain higher force, or step down from an 80 mm bore (2513 N push) to save space. An adjustable stroke is selected over a fixed SAI cylinder when you need a variable end-stop to dial in the exact clamping or positioning distance on the fly without adding external stops. For load-holding without continuous air pressure, this cylinder is not a lock; consider the AirTAC SAIL or BSAI series instead. To match this ISO 15552 footprint, specify the 63 mm bore, 30 mm stroke, 20 mm adjustment, PT G3/8 port, and standard mounting options (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ63AX30-20 FAQ
At an operating pressure of 0.5 MPa, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. At the maximum pressure of 1.0 MPa, it provides up to 318 kgf (3180 N).
The rear adjusting screw acts as a mechanical stop that can trim the effective travel back by up to 20 mm. This creates a usable stroke window of 10 to 30 mm, allowing you to set the exact end position without swapping the cylinder.
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