Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-40S
The AirTAC SAIJ63X350-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear mechanical stroke adjuster. It provides a usable travel window of 310-350 mm, allowing you to dial back the nominal 350 mm stroke by up to 40 mm during commissioning without swapping out the unit. Delivering a robust 2182 N of push force at 0.7 MPa, it is built for demanding positioning tasks.
This variant incorporates a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes a piston magnet for position sensing. The extruded aluminum barrel features sensor grooves on both sides, accepting CMSE reed and DMSE electronic switches. It uses a PT tapered G3/8 port and offers variable air cushions at both ends to manage deceleration.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 350 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 SAIJ63AX350-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×350 | 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 SAIJ63AX350-40S Is Used
Machine Changeover
Fine-tune the 310-350 mm end position during product size changes without physically replacing the cylinder or adding external stopper blocks.
Assembly Pressing
Apply up to 2182 N of push force at 0.7 MPa for pressing operations, using the rear screw to precisely set the engagement depth.
Diversion Stops
Adjust the retract stopper on the fly to handle varying package lengths on a conveyor line, using DMSE electronic sensors to confirm positions.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-40S the Right Cylinder?
Choose this 63 mm bore when 50 mm falls short (delivering only 1374 N push at 0.7 MPa) but an 80 mm bore provides excessive 3518 N force. The 40 mm adjustment range is ideal for machines requiring flexible end-stops during product changeovers, avoiding the need to buy fixed-stroke SAI cylinders for every part size. Mounting options include the SAIJ subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Because the 350 mm stroke is substantial, the 20 mm rod diameter requires external guiding to prevent excessive side-load wear on the seals. Remember that the rear adjuster and air cushions act only as travel stops and deceleration devices; they do not hold the load. For true fail-safe load holding without live air pressure, select an SAIL pneumatic lock or BSAI clamp-lock cylinder 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 SAIJ63AX350-40S FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder generates 2182 N of push force and 1402 N of pull force. It can reach a maximum of 318 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 350 mm down to 310 mm. This creates a 310-350 mm adjustable window for fine-tuning end positions at commissioning, but it does not lock the load without air pressure.
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