Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. Its no-tie-rod, hard-anodized profile barrel is more compact than an ISO 15552 cylinder of the same bore — a space-saver on tight machines.
- BoreØ63 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 29 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 JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB
Its extruded hard-anodized aluminum barrel is noticeably shorter than a same-bore ISO 15552 unit, saving valuable footprint without losing strength.
The -20 code means an external adjuster can shorten the extend stroke by up to 20 mm on-site, letting you fine-tune the end position from 30 to 50 mm without swapping the cylinder. The built-in magnet works with CMSE/DMSE sensors in the side grooves, and the included LB foot mounting bracket simplifies installation.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 50 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | G3/8 |
| Rod thread | M18×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC JSI (JIS standard) datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G. Barrel: hard-anodized aluminum profile (no tie rods).
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 kgf | |
JSIJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative).
Model Code: Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensors. |
JSI-family variants: JSI (double acting), JSID (double rod), JSIJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / TCM1 / TCM2. Thread PT (blank) / G.
Where the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB Is Used
Clamp Position Trimming
Dial in the exact clamping depth on a fixture by adjusting the extend stroke up to 20 mm on-site, ensuring perfect part contact without machining spacers.
Transfer Gate Stop
Use the LB mount to fix the cylinder as a product diverter, fine-tuning the stop position by 20 mm to accommodate different package sizes on the fly.
Vertical Lift Stop
Lift loads up to 79 kg and adjust the extend endpoint precisely to meet varying shelf heights, relying on the compact JIS profile to fit tight vertical spaces.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB the Right Cylinder?
The 20 mm adjustable window is ideal if you need to dial in a final extend position on-site or want one shared spare across slight stroke variants. The LB foot mount gives a stable base, and the -S magnet supports electronic position sensing. Because the stroke is under 300 mm, side-load risks are minimal, but always guide the load for smooth operation.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ 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 Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X50-20SLB FAQ
The external stop screw lets you shorten the extend stroke by up to 20 mm on-site, giving a usable range of 30 to 50 mm from the 50 mm nominal maximum. The retract end remains fixed, and this mechanism only sets the end position—it does not lock or hold the load on air loss.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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