Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-75
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X250-75 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 JSIJ63X250-75
Its extruded hard-anodized aluminium barrel omits tie rods entirely, making the body noticeably shorter and more compact than a same-bore ISO 15552 unit. The G3/8 port matches the bore's air flow demands, while adjustable air cushions of 29 mm at each end absorb end-of-stroke impact.
The external stop screw lets you shorten the extend stroke by up to 75 mm directly at the machine, yielding a usable extend range of 175-250 mm without changing the cylinder itself. Note that this SKU lacks a magnet, so it cannot accept CMSE or DMSE sensors; the -S variant is required for position detection.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-75 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-75 |
|---|---|
| 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 JSIJ63X250-75
| 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 JSIJ63X250-75 Is Used
Transfer Push-Off Tuning
Dial in the exact 175-250 mm push-off distance for varying package sizes on a conveyor without swapping the entire actuator.
Clamp Position Adjustment
Fine-tune the clamping endpoint on-site by up to 75 mm to accommodate different workpiece thicknesses in a machining fixture.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-75 the Right Cylinder?
The 75 mm adjustable window is ideal when you need to fine-tune the extend end position on-site or want a single shared spare across slightly different 175-250 mm stroke variants. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because this is a 250 mm stroke, ensure adequate side-load guidance to prevent rod bearing wear. Remember that a plain cylinder drifts on air loss, so add an external rod lock or pilot-operated check valve for held loads.
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 JSIJ63X250-75 FAQ
The theoretical maximum force is 318 kgf at 1.0 MPa. It features a 63 mm bore, a 20 mm rod with an M18x1.5 thread, a G3/8 port, and 29 mm adjustable cushions at both ends.
The nominal stroke is 250 mm, which is the maximum extend length. An external stop screw allows you to shorten the extend stroke on-site by up to 75 mm, giving a usable extend range of 175-250 mm. The retract end remains fixed, and this stop mechanism only sets the end position rather than holding the load.
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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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