Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X75-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X75-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 75mm 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
- Stroke75 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 SAIJ63X75-50
The AirTAC SAIJ63X75-50 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 63 mm bore generating 1559 N push force at 0.5 MPa, paired with a 75 mm nominal stroke that can be dialed back by up to 50 mm. This creates a highly flexible usable travel window of 25 to 75 mm, allowing precise end-position tuning without swapping hardware.
This model uses a standard carbon steel piston rod with an M16x1.5 thread and a G3/8 port. The extruded aluminum barrel includes sensor grooves on both sides for CMSE or DMSE switches, though this specific SKU is configured without a magnet. The rear adjuster acts purely as a mechanical stop to set the retraction end point, meaning it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X75-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X75-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 75 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 SAIJ63X75-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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 SAIJ63X75-50 Is Used
Product Changeovers
Dial in the exact 25 to 75 mm retraction stop during packaging line format changes without replacing the cylinder or adding external shims.
End-Position Tuning
Fine-tune the final end-of-stroke position during machine commissioning to perfect the seating pressure of 1559 N at 0.5 MPa.
Variable Stops
Adjust the travel window on the fly for automated assembly stations handling parts of slightly varying heights.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X75-50 the Right Cylinder?
Choose this 63 mm bore adjustable cylinder when an application demands variable end-stops or frequent product-size changeovers, replacing the need to stock multiple fixed-stroke SAI units. If the 1559 N thrust at 0.5 MPa is excessive for your task, stepping down to a 50 mm bore yields 982 N. Conversely, heavier loads may require the 80 mm bore providing 2513 N.
Because the nominal stroke is only 75 mm, the 20 mm rod handles side loads well without requiring external guides. To match this cylinder for an ISO 15552 replacement, specify the 63 mm bore, 75 mm stroke, 50 mm adjustment, PT tapered port thread, carbon steel rod, and no magnet. Remember that for load-holding without live pressure, you must integrate an external rod lock or select a SAIL or BSAI model.
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 SAIJ63X75-50 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At a maximum 1.0 MPa, it can deliver up to 318 kgf.
The rear adjuster screw lets you shorten the 75 mm nominal stroke by up to 50 mm, creating a usable travel window of 25 to 75 mm. The adjuster functions as a mechanical stop to set the retraction point and does not lock the load without live air.
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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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