Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-20
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-20 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 1000mm 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
- Stroke1000 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 JSIJ125X1000-20
Generating 6136 N of push force at 0.5 MPa, this 125 mm bore pneumatic actuator handles heavy-duty motion with ease. The hard-anodized aluminum profile barrel keeps the overall length shorter than a same-bore ISO 15552 unit, saving valuable machine space without losing power. It safely manages about 3682 N of real work, which translates to lifting roughly 313 kg vertically with a 2:1 safety margin.
This double-acting single-rod unit features an external adjuster that fine-tunes the extend end position on-site, allowing you to shorten the stroke by up to 20 mm for a usable 980-1000 mm range without changing the cylinder itself. The retract end remains fixed. Air connects via a G1/2 port, and adjustable air cushions of 33 mm decelerate the payload at both ends. Note that this specific SKU lacks a magnet and cannot accept CMSE or DMSE sensors.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-20 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 JSIJ125X1000-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×1000 | 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 JSIJ125X1000-20 Is Used
Heavy Pallet Transfer
Indexes loaded pallets along a conveyor line, using the 20 mm adjuster to fine-tune the stopping distance and avoid collision with end-of-line stops.
Press Ejection System
Pushes heavy stamped parts out of a hydraulic press, relying on the 6136 N thrust and adjustable cushions to absorb the sudden deceleration.
Large Mold Shifting
Moves heavy injection molds between stations, benefiting from the compact JIS profile to fit within tight machinery footprints.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-20 the Right Cylinder?
When sizing this actuator, the neighboring 100 mm bore offers 3927 N push at 0.5 MPa for lighter frames, while stepping up is not an option as 125 mm is the maximum available bore delivering 8590 N at 0.7 MPa. The on-site extend-shortening window is ideal for sharing a single spare across multiple stroke variants or dialing in final end positions during commissioning. You can mount it using Basic, FA, LB, TC, TCM1, or TCM2 brackets. Because this is a no-magnet SKU, position sensing is impossible; add the -S suffix variant if your application requires CMSE or DMSE switches. With a 1000 mm stroke, you must support the load with external guides to prevent rod bending and excessive side loading.
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 JSIJ125X1000-20 FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it delivers 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. It features a 32 mm rod, M27x2.0 rod thread, a G1/2 port, and 33 mm adjustable air cushions at both ends.
The external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 980-1000 mm with the nominal 1000 mm acting as the maximum. The retract end is fixed. This mechanism only sets the end position; it does not lock the load. If air pressure drops, the piston will drift. For load holding, you must install an external rod lock or a pilot-operated check valve.
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