Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 225mm 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
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40S
The AirTAC SAIJ63X225-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that fine-tunes the travel window from 185 to 225 mm without adding external stops. It delivers a robust 2182N push force at 0.7 MPa, utilizing a 20mm carbon steel rod with an M16x1.5 thread. The barrel is machined from extruded aluminum and includes sensor grooves on both sides for straightforward positioning feedback.
This specific SKU is configured with a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and features a built-in magnet (-S) compatible with AirTAC CMSE reed and DMSE electronic sensors. The rear adjustment mechanism functions purely as a travel stop to dial in end positions during commissioning; it does not lock or hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 225 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 SAIJ63AX225-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×225 | 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 SAIJ63AX225-40S Is Used
Changeover Adjustment
Dial in the 185-225mm travel window during machine setup to accommodate new product lengths without disassembling the actuator assembly.
End-Position Tuning
Trim the retract stroke by up to 40mm to perfect the seating force against a workpiece, preventing damage during initial commissioning.
Variable Diverter Stops
Act as an adjustable physical stop for product diverters on a conveyor, easily modifying the end position as package sizes change.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40S the Right Cylinder?
Choose this 63mm bore when 50mm falls short at 1374N push (0.5 MPa) or 80mm is excessive at 3518N push. The 40mm adjustment range is ideal for production lines running mixed product sizes, allowing you to reposition the end stop rapidly during changeovers instead of swapping the entire cylinder. For fixed travel requirements without the need for end-tuning, the standard SAI cylinder is a simpler alternative.
As a dimensionally interchangeable ISO 15552 cylinder, this model matches standard bore, stroke, and port specifications: 63mm bore, 225mm stroke, 40mm adjustment, PT G3/8 tapered ports, and an -S magnet. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the 225mm stroke is relatively long, ensure you use an external guide to prevent excessive side loading on the rod. If your application requires true load holding without continuous air pressure, consider the SAIL pneumatic lock or BSAI clamp-lock series instead.
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 SAIJ63AX225-40S FAQ
At 0.7 MPa operating pressure, this 63mm bore cylinder provides a push force of 2182N and a pull force of 1402N. It can reach a maximum push force of 2805N at 1.0 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the nominal 225mm down to 185mm. It is a travel stop for fine-tuning end positions, not a lock, and cannot hold the load without live air pressure.
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