Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-30
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-30 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 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 JSIJ125X125-30
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder handles heavy tasks while remaining more compact than a same-bore ISO 15552 unit. The hard-anodized aluminum barrel keeps the build clean without external rods, and the G1/2 port feeds the massive 1251 kgf maximum capacity.
The external adjuster lets you trim the extend stroke by up to 30 mm on site, giving a usable 95-125 mm range while the retract end stays fixed. It handles about 3682 N of real work safely, lifting roughly 313 kg vertically. Note this SKU lacks a magnet, so it cannot take CMSE/DMSE sensors.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-30 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-30 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 JSIJ125X125-30
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×125 | 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 JSIJ125X125-30 Is Used
Heavy Pallet Forming
Dial in the exact 95 to 125 mm extend reach to press heavy pallets without repositioning the entire fixture.
Press Fit Tuning
Fine-tune the final 30 mm of the extend stroke on site to achieve precise bearing press depths in thick housings.
Stamping Depth Control
Shorten the extend endpoint on the fly to adjust marking depth on large metal blanks using the full 6136 N force.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-30 the Right Cylinder?
Size this 125 mm bore against the 100 mm option, which offers 3927 N push at 0.5 MPa, if your load is lighter. The adjustable window helps tune end positions on site or standardize spares across stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. For any stroke over 300 mm, add a guide to prevent side-load wear. Without a -S suffix, this cylinder cannot support magnetic sensing.
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 JSIJ125X125-30 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 and a M27x2.0 rod thread.
The -30 code means an external stop screw shortens the extend stroke by up to 30 mm on site, giving a usable 95 to 125 mm range. The nominal 125 mm stroke is the maximum, and the retract end is fixed. This stop only sets position; it does not hold the 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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Most inquiries answered within 7-8 hours.
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