Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X25-10
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X25-10 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 25mm 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
- Stroke25 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 JSIJ125X25-10
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS actuator brings heavy-duty motion into a tight footprint. The extruded hard-anodized aluminum profile barrel keeps the overall length shorter than a same-bore ISO 15552 unit. It handles about 3682 N of real work safely, translating to roughly 313 kg lifted vertically with a 2:1 margin.
An external adjuster lets you trim the extend stroke on site by up to 10 mm, dropping the usable forward travel from the 25 mm maximum down to 15 mm for exact end-position tuning. The retract end remains fixed. Air flows through a G1/2 port, and adjustable 33 mm cushions decelerate the load at both ends. This plain SKU lacks a magnet and cannot take a CMSE or DMSE sensor.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X25-10 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X25-10 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 25 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 JSIJ125X25-10
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×25 | 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 JSIJ125X25-10 Is Used
Press Fit Dial-In
Shortens the extend stroke up to 10 mm on site to set an exact pressing depth for heavy bearing seating without changing the cylinder.
Heavy Pallet Stop
Uses the 6136 N push force at 0.5 MPa to halt large loaded pallets, with the 33 mm cushion absorbing the impact at the end of travel.
Compact Clamp Base
Fits into tight machine cells where a same-bore ISO 15552 cylinder would be too long, providing massive clamping force in a short profile.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X25-10 the Right Cylinder?
At the top of the range, this 125 mm bore is the heavy hitter; step down to a 100 mm bore if your job needs less than the 3927 N push at 0.5 MPa. The 10 mm extend-shortening window is ideal for sharing one spare across slight stroke variants or dialing in a precise final position without swapping the cylinder. Mount using the Basic, FA, LB, TC, TCM1, or TCM2 hardware. Because this is a no-magnet model, you cannot fit position sensors; specify the -S variant if you need CMSE or DMSE switches. Always guide the rod against side 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 JSIJ125X25-10 FAQ
It pushes 6136 N and pulls 5734 N at 0.5 MPa. At 0.7 MPa it pushes 8590 N and pulls 8028 N. The theoretical maximum force is 1251 kgf at 1.0 MPa. The air port is G1/2.
The nominal 25 mm extend stroke is the maximum. The external adjuster lets you shorten the forward stroke by up to 10 mm on site, giving a usable extend range of 15 to 25 mm. The retract end is fixed. This mechanism sets the end position and is not a load lock.
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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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Most inquiries answered within 7-8 hours.
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