Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20
The AirTAC SAIJ63X115-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 95 to 115 mm, allowing you to dial back the nominal 115 mm stroke by up to 20 mm during commissioning. This bore size delivers a robust 1559 N pull force at 0.5 MPa, making it suitable for moderate-duty positioning tasks.
The barrel is machined from extruded aluminum and includes sensor grooves on both sides for flexible switch mounting. The piston rod is constructed from SUS420J2 stainless steel (code A) for improved corrosion resistance, and the body features PT tapered port threads. Unlike a fixed-stroke SAI cylinder, this adjustable variant eliminates the need to swap physical units when product sizes change on the line. The rear adjuster acts purely as a mechanical stop to set the end position and does not function as a lock or brake to hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 115 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 SAIJ63AX115-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×115 | 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 SAIJ63AX115-20 Is Used
Product Changeover
Quickly fine-tune the retract end position by up to 20 mm when switching between product sizes on a packaging line, avoiding the need to physically swap cylinders.
Machine Setup
Dial in the exact 95-115 mm travel window during commissioning to perfect a pressing or positioning task without adding external mechanical stops.
Assembly Stations
Leverage the 1559 N pull force and variable end-stop to accommodate slight part tolerances in automated assembly fixtures.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-20 the Right Cylinder?
Select this 63 mm bore cylinder when your application requires an exact end-position tune within a 95 to 115 mm travel window. If your process demands less force, stepping down to a 50 mm bore yields 825 N of pull force at 0.5 MPa, whereas upgrading to an 80 mm bore provides 2268 N. The built-in rear adjuster is perfect for machine setup and changeover, removing the need to bolt on external stops or swap the entire cylinder.
When matching this ISO 15552 cylinder for a replacement, verify the 63 mm bore, 115 mm nominal stroke, 20 mm adjustment range, G3/8 port, PT thread type, and SUS420J2 rod material. Note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles. Because the stroke is under 300 mm, side-load stress on the M16x1.5 rod thread is minimal, though external guides are still recommended for heavy offset loads. For any load-holding requirements without continuous air pressure, consider the SAIL or BSAI series 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 SAIJ63AX115-20 FAQ
At a standard 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of pull force and 2182 N of push force. At its maximum 1.0 MPa pressure, it can deliver up to 318 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from 115 mm down to a minimum of 95 mm. It is a travel stop for end-position tuning, not a lock, and the cylinder still requires live air pressure to hold its position.
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 SAIJ63AX115-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.