Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-100
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-100 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 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 JSIJ125X225-100
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder packs serious power into a body noticeably shorter than a same-bore ISO 15552 unit. The hard-anodized aluminum extruded barrel keeps the assembly rigid while saving space, and the G1/2 port matches the high flow demands of this large bore.
The -100 code means an external adjuster can shorten the extend stroke on-site by up to 100 mm, giving a usable forward travel of 125 to 225 mm without swapping the cylinder. It handles about 3682 N of real work safely, which translates to lifting roughly 313 kg vertically with a 2:1 margin. Note that this specific SKU lacks a magnet, so it cannot accept CMSE or DMSE sensors without changing to an -S variant.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-100 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-100 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 JSIJ125X225-100
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×225 | 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 JSIJ125X225-100 Is Used
Heavy Pallet Forming
Provides the 6136 N push needed to compact large pallet loads, with the 100 mm adjuster tuning the final press height precisely on-site.
Stamping Position Trim
Shortens the extend stroke from 225 mm down to 125 mm to accommodate varying material thicknesses without re-mounting the actuator.
Heavy Divert Gate
Handles roughly 313 kg of vertical lift force to actuate heavy sorting gates, using the compact JIS profile to fit tight conveyor frames.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-100 the Right Cylinder?
When sizing this unit, the 80 mm bore offers 2513 N push at 0.5 MPa for lighter loads, while this 125 mm bore provides the maximum 6136 N push at 0.5 MPa for heavy tasks. The 100 mm adjustable window is ideal for fine-tuning the end position on-site or sharing a single spare across multiple stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 225 mm stroke exceeds 300 mm only slightly, side-load guides are still recommended. A plain cylinder drifts on air loss, so specify 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 JSIJ100~125 Adjustable Cylinder JSIJ125X225-100 FAQ
At 0.5 MPa it pushes 6136 N and pulls 5734 N. At 0.7 MPa it pushes 8590 N and pulls 8028 N. The theoretical maximum force is 1251 kgf at 1.0 MPa. This 125 mm bore uses a G1/2 port, features a 32 mm rod, and has 33 mm adjustable air cushions at both ends.
The external stop screw lets you shorten the extend stroke on-site by up to 100 mm. With a 225 mm nominal maximum stroke, your usable forward travel becomes 125 to 225 mm. The retract end remains fixed, and this stop only sets the end position rather than locking the load.
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