Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 450mm stroke, G1/2 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.
- BoreØ125 mm
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting, adjustable stroke
- Rod threadM27×2.0
- CushionAdjustable, 33 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 JSIJ100~125 Adjustable Cylinder JSIJ125X450-75
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder is built for heavy-duty positioning. The hard-anodized aluminum barrel keeps the total length shorter than a same-bore ISO 15552 unit. It handles about 3682 N of real work safely, which translates to roughly 313 kg lifted vertically with a 2:1 margin.
A -75 code means an external stop screw can shorten the 450 mm extend stroke on site by up to 75 mm, giving a usable range of 375-450 mm without changing the cylinder body. The retract end remains fixed. Air connects via a G1/2 port. This plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor; the -S variant is required for position detection.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 450 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 33 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×450 | 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 JSIJ100~125 Adjustable Cylinder JSIJ125X450-75 Is Used
Heavy Pallet Lifting
Raises loaded pallets in distribution hubs, using the 75 mm adjuster to fine-tune the exact raise height for different pallet thicknesses on site.
Press Ejection Stroke
Pushes finished parts out of a large stamping press, trimming the extend end position by up to 75 mm to accommodate changing die depths.
Automated Storage Retrieval
Actuates heavy storage shuttle arms, dialing in the 450 mm extend stroke to match varying rack bay depths without swapping the cylinder.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X450-75 the Right Cylinder?
For 0.5 MPa operations, the 100 mm bore offers 3927 N push while the 125 mm delivers 6136 N, making this model the top choice when the smaller bore runs out of thrust. The on-site stroke adjustability lets maintenance teams fine-tune the extend end position across shared 450 mm spares. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 450 mm stroke is long, always use an external guide to prevent rod bending under side loads. Note that this non-magnetic version cannot support switches.
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 JSIJ100~125 Adjustable Cylinder JSIJ125X450-75 FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it provides 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. The air port size is G1/2.
The -75 code means an external stop screw can shorten the 450 mm extend stroke by up to 75 mm on site, yielding a 375-450 mm usable range while the retract end stays fixed. This mechanism only sets the end position; it is not a load lock. The cylinder will drift on air loss, so use an external rod lock or pilot-operated check valve for held loads.
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Standard models are processed and dispatched in 3-5 business days.
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