Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 400mm 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
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-20
The AirTAC SAIJ63X400-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 380-400 mm usable travel window, allowing you to dial back the nominal 400 mm stroke by up to 20 mm during commissioning. Delivering 2182 N of push force at 0.7 MPa, it fits mid-range automation tasks perfectly.
This variant uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a travel stop for end-position tuning, not as a lock to hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 400 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 SAIJ63AX400-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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 SAIJ63AX400-20 Is Used
Machine Changeovers
Fine-tune the 380-400 mm travel window during product size transitions without physically replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Dial in the exact retract position on automated machining lines to compensate for mechanical wear or tooling offsets.
Diverter Alignment
Adjust the stroke end-point on sorting conveyors to handle different package sizes accurately on the fly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-20 the Right Cylinder?
Select this 63 mm bore when an application requires 2182 N push force at 0.7 MPa (or 2805 N at 0.9 MPa) and exact end-position tuning without swapping cylinders. If you need less force, the 50 mm bore offers 1374 N at 0.7 MPa; for heavier loads, the 80 mm bore provides 3518 N. Because the 400 mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the 20 mm rod and M16x1.5 rod thread.
An adjustable stroke is ideal for machine setups requiring variable end-stops during product changeovers. For load-holding without continuous air pressure, this cylinder is not suitable—consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead. To match this ISO 15552 replacement, specify: 63 mm bore, 400 mm stroke, 20 mm adjustment, PT ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mountings, and no magnet.
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 SAIJ63AX400-20 FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder generates 2182 N of push force and 1402 N of pull force. At 0.9 MPa, the push force increases to 2805 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 400 mm nominal stroke down to 380 mm. It only sets the end-position and does not lock or hold the load without live air pressure.
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 SAIJ63AX400-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.