Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-75S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X250-75S 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 JSIJ63X250-75S
The hard-anodized aluminum extruded barrel keeps the assembly light without external support rods. A built-in piston magnet (-S) allows CMSE or DMSE switches to drop directly into the side grooves for position sensing.
The external adjuster lets you trim the extend stroke by up to 75 mm on-site, giving a usable forward range of 175 to 250 mm while the retract end remains fixed. Air connections use a G3/8 port, and adjustable air cushions at both ends absorb 29 mm of end-impact energy.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-75S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-75S |
|---|---|
| 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 JSIJ63X250-75S
| 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 JSIJ63X250-75S Is Used
End-Stop Trimming
Dial in the exact 175 to 250 mm extend position on-site for machining clamps that need variable part clearance without replacing hardware.
Transfer Diverter
Adjust the pusher extension distance on the fly to route different box sizes on a packaging line while maintaining compact JIS dimensions.
Vertical Lift Stop
Set a precise lower travel limit for a 79 kg material lift, using the external adjuster to change the drop height without reprogramming controls.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X250-75S the Right Cylinder?
The adjustable stroke is ideal when you need to fine-tune the extend end position without swapping the whole cylinder, or when consolidating spare parts across slightly different stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this is an -S SKU, it arrives ready for CMSE/DMSE sensors. For a 250 mm stroke, always guide the load to prevent rod side-loading and premature seal wear.
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 JSIJ63X250-75S FAQ
The theoretical maximum force is 318 kgf at 1.0 MPa. The air port is G3/8.
The nominal 250 mm extend stroke is the maximum. An external stop screw lets you shorten the forward stroke by up to 75 mm on-site, yielding a usable extend range of 175 to 250 mm. The retract end is fixed, and this mechanism 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.
Fast Reply
Most inquiries answered within 7-8 hours.
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