Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X375-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X375-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 375mm 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
- Stroke375 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X375-20S
The AirTAC SAIJ63X375-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 355 to 375 mm. It delivers 1559 N of pull force at 0.5 MPa and features a carbon steel rod with an M16x1.5 thread. The integrated -S magnet enables position sensing with AirTAC CMSE reed or DMSE electronic switches.
Because the 375 mm stroke is relatively long, the 20 mm rear stopper is invaluable for dialing in exact end positions during machine commissioning without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered port threads match the standard G3/8 air connection for this bore size.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X375-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X375-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 375 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 SAIJ63X375-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×375 | 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 SAIJ63X375-20S Is Used
Product Changeover
Quickly adjust the 355-375 mm travel window to accommodate different product lengths on the same line without changing hardware.
Machine Commissioning
Fine-tune the exact end-of-stroke position during setup to perfect timing and avoid mechanical hard stops.
Variable End Stops
Dial in the retract position precisely for delicate pick-and-place operations requiring strict spatial control.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X375-20S the Right Cylinder?
Choose this 63 mm bore when you need 1559 N pull force at 0.5 MPa; step down to a 50 mm bore (825 N pull) for lighter loads, or up to an 80 mm bore (2268 N pull) for heavier thrust. The adjustable stroke is ideal for product-size changeovers, letting you fine-tune the retract position on the fly instead of swapping cylinders. Note that the rear adjuster acts only as a travel stop, not a load lock; for position holding without live air, consider an AirTAC SAIL or BSAI cylinder. When replacing an ISO 15552 cylinder, match the 63 mm bore, 375 mm stroke, 20 mm adjustment, PT port threads, and -S magnet.
Given the 375 mm stroke, the unsupported piston rod is susceptible to side-loading; ensure external guidance is used to prevent premature seal wear. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR brackets.
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 SAIJ63X375-20S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force at 0.7 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 375 mm down to 355 mm. It sets the end position but does not lock the load without live air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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