Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 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 JSIJ125X150-50S
Delivering massive thrust in a compact envelope, this 125 mm bore JIS profile cylinder pushes 6136 N and pulls 5734 N at 0.5 MPa. Its hard-anodized extruded aluminum barrel makes it shorter than a same-bore ISO 15552 unit, while the G1/2 port feeds the large 32 mm rod. With a built-in magnet, the side grooves accept CMSE or DMSE switches for precise position detection.
The external stop screw lets you trim the extend stroke on-site by up to 50 mm, dropping the usable forward travel from the 150 mm maximum down to 100 mm without swapping the cylinder. This on-site tuning means a single spare can cover several stroke variants. It handles about 3682 N of real work safely, lifting roughly 313 kg vertically with a 2:1 margin. Note that the air cushion only decelerates the load; use an external rod lock or pilot-operated check valve if you need to hold position against air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 JSIJ125X150-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×150 | 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 JSIJ125X150-50S Is Used
Heavy Pallet Lift
Raises loaded pallets with a safe working load near 3682 N, using the 50 mm adjuster to set exact upper stopping height without repositioning the cylinder.
Press Fit Tuning
Inserts bearings into heavy housings by trimming the extend stroke down to 100 mm on-site, ensuring precise insertion depth without changing the maximum 150 mm travel.
Divertor Gate Actuation
Drives large sorting gates on conveyors where the 125 mm bore provides the raw force to move jammed items, while the -S magnet tracks gate position.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-50S the Right Cylinder?
When sizing this actuator, the neighboring 100 mm bore offers 3927 N push at 0.5 MPa for lighter loads, while stepping up is impossible as 125 mm is the largest standard size. The 50 mm adjustable window is ideal for sharing one spare across multiple stroke lengths or fine-tuning the end position during machine commissioning. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix confirms the piston magnet is present for CMSE/DMSE sensors. Because the 32 mm rod and heavy forces generate high bending moments, always guide the load externally, especially since any stroke over 300 mm requires a dedicated linear guide to prevent side-load damage.
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 JSIJ125X150-50S 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 unit uses a G1/2 port and a 32 mm piston rod.
The nominal stroke is 150 mm, which is the maximum forward travel. An external stop screw lets you shorten the extend stroke on-site by up to 50 mm, giving a usable extend range of 100 to 150 mm. The retract end is fixed, and this mechanism only sets the end position rather than locking the load.
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Standard models are processed and dispatched in 3-5 business days.
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