Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-75S
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X125-75S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 125mm 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
- Stroke125 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 JSIJ63X125-75S
It features a hard-anodized aluminium barrel and is notably shorter than a same-bore ISO 15552 unit. The -75 code means an external stop screw lets you trim the extend stroke by up to 75 mm, giving a usable range of 50-125 mm without changing the hardware.
The retract end remains fixed while you fine-tune the extend position on-site. The -S suffix adds a built-in piston magnet for CMSE/DMSE switches that drop into the side grooves, while the 29 mm adjustable air cushions decelerate the load near stroke ends.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-75S Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 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 JSIJ63X125-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×125 | 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 JSIJ63X125-75S Is Used
End-Position Tuning
Trim the extend stroke by up to 75 mm on-site to dial in exact clamping depth without machining new hard stops.
Variable Length Diverter
Adjust the pusher reach on a packaging line to handle different carton sizes from a single installed actuator.
Shared Spare Inventory
Keep one cylinder as a universal spare and set the external stop screw to match the required stroke on the floor.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X125-75S the Right Cylinder?
The adjustable stroke is ideal when you need to share a spare cylinder across stroke variants or fine-tune the end position after mechanical parts settle. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this unit carries the -S suffix, it accepts CMSE/DMSE sensors directly. For any stroke at or above 300 mm, always guide the load to prevent side-load damage to 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 JSIJ63X125-75S FAQ
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa it pushes 2182 N and pulls 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. This 63 mm bore model uses a G3/8 port and features a 20 mm piston rod.
The nominal 125 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 75 mm, yielding a usable extend range of 50-125 mm. The retract end is fixed. This mechanism only sets the end position; it does not lock 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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