Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 185mm 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
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-50
The AirTAC SAIJ63X185-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 185 mm stroke that can be dialed back by up to 50 mm, yielding a precise 135-185 mm usable travel window for product changeovers. In the 63 mm bore class, it delivers 1559 N of pull force at 0.5 MPa and up to 2805 N of push force at 0.7 MPa.
This unit is configured with an SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads with a G3/8 connection. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position; it does not lock the load without live air pressure. For load-holding requirements, an external rod lock or related SAIL cylinder is required.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 185 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 SAIJ63AX185-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×185 | 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 SAIJ63AX185-50 Is Used
Product Changeover
Dial in the 135-185 mm travel window during format size changes on packaging lines without replacing the cylinder or adding external stops.
End-Position Tuning
Fine-tune the retract stop at machine commissioning to achieve exact mechanical endpoints, absorbing minor variations in tooling length.
Variable End Stops
Provide adaptable retraction limits on automated assembly stations where multiple part heights are processed on the same fixture.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-50 the Right Cylinder?
Select this 63 mm bore cylinder when an application requires 1559 N pull force at 0.5 MPa but demands variable end-position tuning without swapping physical components. If your setup needs less force, stepping down to a 50 mm bore yields 825 N of pull force; stepping up to an 80 mm bore provides 2268 N. The adjustable 135-185 mm window is ideal for commissioning fine-tunes and product-size changes on a line.
Because this is a 185 mm stroke, side-load risks are moderate, but always ensure external guiding for heavy loads. To match this exact configuration for an ISO 15552 replacement, specify the 63 mm bore, 185 mm stroke, 50 mm adjustment, PT port thread, and the SUS420J2 rod material. Note that SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB and CA/CB styles. Since no magnet is specified, position sensing via CMSE or DMSE switches is not enabled.
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 SAIJ63AX185-50 FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. At 0.7 MPa, the push force increases to 2805 N.
The rear adjuster acts as a mechanical stop that shortens the effective stroke. For this 185 mm nominal stroke model, you can trim the travel back by up to 50 mm, creating a 135-185 mm usable window. It functions as a stop, not a lock, and cannot hold the load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.