Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-50
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X250-50 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 250mm 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
- Stroke250 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 JSIJ63X250-50
Its external stop screw lets you trim the extend stroke by up to 50 mm, dropping the usable forward travel from the 250 mm maximum down to 200 mm without swapping the actuator. The retract end remains fixed. Built with an extruded hard-anodized aluminum barrel, the body is noticeably shorter and more compact than a same-bore ISO 15552 unit. It breathes through a G3/8 port and uses a 20 mm rod with an M18x1.5 thread.
Adjustable 29 mm air cushions at both ends manage the deceleration smoothly. Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE sensors for position detection. Remember that the cushions only slow the piston; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve if you need to hold a suspended load.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-50 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 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 JSIJ63X250-50
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×250 | 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 JSIJ63X250-50 Is Used
Press Fit Tuning
Dial in the exact seating depth of a bearing by trimming the extend stroke up to 50 mm on-site, avoiding costly actuator swaps when part tolerances vary.
Variable Transfer Stops
Serve as an adjustable lane diverter on a packaging line, shortening the 250 mm stroke to meet different carton sizes without reprogramming the motion controller.
Pallet Lift Positioning
Lift loads up to 79 kg and set the precise raise height using the external adjuster, perfect for aligning pallets with varying conveyor bed elevations.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-50 the Right Cylinder?
The 50 mm adjustable window is ideal when you need to fine-tune end positions on the machine or want a single shared spare for several stroke variants. You can mount it via Basic, FA, LB, TC, TCM1, or TCM2 brackets. For any stroke at or above 300 mm, guide the load externally to prevent side-load wear on the rod seals.
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 JSIJ63X250-50 FAQ
This 63 mm bore cylinder pushes 1559 N and pulls 1402 N at 0.5 MPa. At 0.7 MPa it pushes 2182 N and pulls 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. It uses a G3/8 air port.
The nominal stroke is 250 mm, which is the maximum forward travel. The external adjuster lets you shorten the extend stroke on-site by up to 50 mm, giving a usable range of 200 to 250 mm. The retract end is fixed, and the stop sets the end position rather than locking the load.
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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.
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Most inquiries answered within 7-8 hours.
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