Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-40
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 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 JSIJ125X175-40
Delivering 6136 N of push force at 0.5 MPa, this large-bore JIS actuator brings heavy-duty power to a compact profile barrel that is noticeably shorter than a same-bore ISO 15552 cylinder. The hard-anodized aluminium extrusion keeps the assembly light, while the G1/2 port handles the high air volume needed for the 125 mm bore. It is double-acting with a single 32 mm rod.
The -40 code means an external stop screw lets you shorten the extend stroke on-site by up to 40 mm, giving a usable forward range of 135-175 mm without changing the cylinder itself. The retract end remains fixed, and the adjustable air cushions only decelerate the load near the ends. In practice it handles about 3682 N of real work safely, which translates to lifting roughly 313 kg vertically with a 2:1 margin. Note this SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-40 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 JSIJ125X175-40
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×175 | 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 JSIJ125X175-40 Is Used
Press Fit Tuning
Adjust the 40 mm extend window on-site to set the exact bottoming position for pressing bearings without swapping actuators.
Heavy Pallet Stops
Use the 6136 N push force to halt large loaded pallets on a conveyor, tweaking the stop distance as load sizes change.
Stamping Depth Control
Fine-tune the forward stroke down to 135 mm to regulate stamping or marking depth directly at the machine frame.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-40 the Right Cylinder?
At the top of the range, this 125 mm bore pushes 6136 N at 0.5 MPa; if you need less force, step down to the 100 mm bore for 3927 N. Going higher is not an option as 125 is the maximum. The -40 mm adjustable window is ideal when you need to fine-tune the extend end position on-site or want one shared spare across slightly different stroke variants. JSIJ mounting choices include Basic, FA, LB, TC, TCM1, and TCM2. Because this is a non-magnetic SKU, you cannot fit position sensors; specify the -S version if you need CMSE or DMSE switches. For any stroke over 300 mm, always use a guide rail to prevent side-load wear on the rod.
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 JSIJ125X175-40 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. It uses a G1/2 port, a 32 mm rod with an M27x2.0 thread, and has 33 mm adjustable air cushions at both ends. Operating speed is 30-500 mm/s.
The nominal 175 mm extend stroke is the maximum. The external adjuster lets you shorten the forward stroke by up to 40 mm on-site, giving a usable range of 135-175 mm. The retract end is fixed. This stop only sets the end position; it does not lock the load, so you need an external rod lock or pilot-operated check valve to hold a load on air loss.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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