Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 50mm 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
- Stroke50 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 JSIJ125X50-10
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder handles heavy workloads while remaining more compact than a same-bore ISO 15552 unit. The hard-anodized aluminum barrel keeps the assembly light, and the G1/2 port matches the bore's high flow demands. It safely moves about 3682 N of real work, which translates to lifting roughly 313 kg vertically with a 2:1 margin.
The external stop screw lets you trim the extend stroke by up to 10 mm on site, giving a usable forward range of 40 to 50 mm without swapping the cylinder. The retract end stays fixed. Note that this specific SKU lacks a magnet and cannot take a CMSE or DMSE sensor; adding an -S variant enables switch tracking. The air cushion only decelerates the piston near the ends, so fit an external rod lock or pilot-operated check valve if you need to hold a load on air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 50 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 JSIJ125X50-10
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | 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 JSIJ125X50-10 Is Used
Press Fit Calibration
Dial in the exact 40 to 50 mm insertion depth for heavy bearing presses using the external adjuster, ensuring precise stops without reprogramming the machine.
Pallet Stopper Gate
Absorb the impact of incoming 300 kg pallets with 6136 N of push force, tweaking the stop position by up to 10 mm to match different load sizes.
Heavy Clamp Positioning
Secure large weldments and fine-tune the clamping reach on site, leveraging the compact JIS profile to save space in tight tooling cells.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10 the Right Cylinder?
For lighter jobs pushing under 4000 N at 0.5 MPa, step down to the 100 mm bore which still offers 3927 N. If you need more than 6136 N, you are at the top of the range with this 125 mm bore. The 10 mm adjuster is ideal for sharing a spare across 40 to 50 mm stroke variants and fine-tuning end positions on site. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a non-magnet SKU, order an -S version if you require CMSE or DMSE sensors. Even at 50 mm stroke, ensure adequate guide support to absorb 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 JSIJ125X50-10 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 is 1251 kgf at 1.0 MPa. This 125 mm bore uses a G1/2 port, a 32 mm rod, and M27x2.0 rod threads.
The nominal 50 mm extend stroke is the maximum. An external stop screw lets you shorten the forward stroke by up to 10 mm on site, yielding a usable range of 40 to 50 mm. The retract end remains fixed, and this stop only sets the end position rather than locking the load.
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