Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 210mm 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
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40
The AirTAC SAIJ63X210-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from 210 mm to a 170 mm minimum. This 40 mm adjustment window is ideal for dialing in exact end positions during machine commissioning without swapping hardware. The 63 mm bore yields a push force of 1559 N and a pull force of 1402 N at 0.5 MPa, placing it in a robust mid-range thrust class.
This specific configuration incorporates a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance over standard carbon steel. It uses PT tapered port threads (G3/8) and lacks a piston magnet. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 210 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 SAIJ63AX210-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×210 | 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 SAIJ63AX210-40 Is Used
Machine Changeover
Dial in the 170-210 mm travel window on the rear stopper screw to accommodate different product lengths on a packaging line without changing cylinders.
End-Position Tuning
Fine-tune the exact retract position during commissioning to perfect a pressing or seating operation, avoiding the need for external shims.
Mid-Range Actuation
Leverage the 1559 N push force at 0.5 MPa for clamping or lifting medium-weight assemblies within automated workstations.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (982 N push at 0.5 MPa) is underpowered for your load, but an 80 mm bore (2513 N push at 0.5 MPa) is physically oversized. The 40 mm adjustable stopper lets you set variable end-stops for product changeovers, whereas a fixed-stroke SAI cylinder locks you into a single travel length. To replace an ISO 15552 cylinder, match the 63 mm bore, 210 mm stroke, 40 mm adjustment, PT G3/8 port, and desired mounting interface.
Because the nominal stroke is 210 mm, standard internal air cushions are sufficient, but always ensure external guiding if side loads are present. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, select an SAIL or BSAI cylinder.
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 SAIJ63AX210-40 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm. This creates a usable travel window of 170 to 210 mm, letting you set the exact retract end-position without replacing 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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