Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40S 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 SAIJ63AX210-40S
The AirTAC SAIJ63X210-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a SUS420J2 stainless steel rod and a built-in magnet for position sensing. By turning the rear adjustment screw, you can shorten the effective travel, creating a usable stroke window of 170-210 mm for this specific 210 mm nominal length.
Delivering 1559 N of push force and 1402 N of pull force at 0.5 MPa, this 63 mm bore profile cylinder integrates variable air cushions at both ends. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to directly mount CMSE reed or DMSE solid-state switches without adding external brackets.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40S |
|---|---|
| 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 SAIJ63AX210-40S
| 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 SAIJ63AX210-40S Is Used
Machine Changeover
Dial in the 170-210 mm travel window during product size transitions without replacing the entire cylinder assembly.
End-Position Tuning
Fine-tune the retract end-stop during initial commissioning to perfect positioning without adding bulky external mechanical stops.
Sensor Integration
Utilize the dual sensor grooves and built-in magnet to mount CMSE or DMSE switches for precise end-of-stroke confirmation.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-40S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires fine end-position tuning during commissioning or product changeover without swapping the cylinder or adding external stops. If your application requires less force, stepping down to a 50 mm bore yields 982 N of push thrust at 0.5 MPa; stepping up to an 80 mm bore provides 2513 N.
Because the 210 mm stroke exceeds 300 mm? No, but for any extended travel, ensure an external guide supports the load to prevent side-loading damage to the M16x1.5 rod thread. The rear adjuster acts only as a travel stop for deceleration, not a lock. If you need to hold a load without live air pressure, select an AirTAC SAIL or BSAI cylinder instead. To replace this unit, match the 63 mm bore, 210 mm stroke, 40 mm adjustment, PT G3/8 port, and the -S magnet. Mounting options include 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 SAIJ63AX210-40S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. It can reach a maximum of 318 kgf at 1.0 MPa.
The rear adjusting screw acts as a stopper that trims the retract stroke. For this 210 mm nominal stroke model, you can mechanically shorten the effective travel by up to 40 mm, providing a usable 170-210 mm positioning window.
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