Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-10S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-10S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 500mm 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
- Stroke500 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 JSIJ125X500-10S
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder is built for heavy-duty positioning. The extruded hard-anodized aluminium barrel omits tie rods entirely, making the unit shorter and more compact than a same-bore ISO 15552 cylinder. It handles about 3682 N of real work safely, which translates to roughly 313 kg lifted vertically with a 2:1 margin. Air connections use a G1/2 port.
The JSIJ125X500-10S features an external stop screw that lets you shorten the extend stroke on-site by up to 10 mm, giving a usable range of 490-500 mm without changing the cylinder itself. Because this is an -S SKU, a built-in piston magnet supports CMSE/DMSE sensors in the side grooves. Note that a plain cylinder drifts on air loss; the cushion only decelerates, so fit an external rod lock to hold a load.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-10S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 500 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 JSIJ125X500-10S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×500 | 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 JSIJ125X500-10S Is Used
Heavy Pallet Lifts
Raises loaded pallets using the 6136 N push force, with the 10 mm adjuster fine-tuning the exact raise height to clear a conveyor lip.
Press Ejection
Pushes heavy stamped parts out of a press bed, using the 490-500 mm extend range to dial in the exact ejection point.
Automated Storage
Positions large totes in high-bay racking where the compact JIS profile saves overhead space compared to an ISO 15552 cylinder.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-10S the Right Cylinder?
When sizing, step down to an 80 mm bore for 2513 N push at 0.5 MPa if you do not need the full 125 mm capacity, or keep this model for maximum 1251 kgf at 1.0 MPa. The 10 mm adjustable window is ideal for sharing a spare across stroke variants or fine-tuning an end position on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. The -S magnet supports CMSE/DMSE switches. Because the 500 mm stroke is long, always use external guides to prevent rod bending under 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 JSIJ125X500-10S 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.
The nominal 500 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 10 mm, yielding a usable range of 490-500 mm. The retract end is fixed, and this mechanism sets 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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