Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-100S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-100S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 1000mm 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
- Stroke1000 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 JSIJ125X1000-100S
Delivering 6136 N of push force at 0.5 MPa, this large-bore JIS actuator brings heavy-duty thrust to applications needing exact end-position tuning. The external stop screw provides a 100 mm window to shorten the extend stroke on site, yielding a usable range of 900 to 1000 mm while the retract end remains fixed. You can fine-tune the working stroke without swapping the cylinder itself. The hard-anodized aluminum profile barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit. A built-in magnet (-S) allows CMSE or DMSE switches to drop directly into the side sensor grooves.
In practical terms, this model handles about 3682 N of safe working load, which translates to lifting roughly 313 kg vertically with a 2:1 safety margin. Air flows through a G1/2 port, and adjustable air cushions of 33 mm at each end absorb kinetic energy at the stroke limits. Remember that a standard cylinder does not hold load on air loss; the cushions only decelerate. For suspended loads, fit an external rod lock or pilot-operated check valve. Because the 1000 mm stroke invites rod bending, always support the load with external guides to prevent side-load damage.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-100S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-100S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 JSIJ125X1000-100S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×1000 | 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 JSIJ125X1000-100S Is Used
Heavy Press Tonnage
Provides up to 8590 N of thrust at 0.7 MPa for forming and stamping operations, with the 100 mm extend window allowing precise bottom-dead-center adjustment without changing the tooling height.
Pallet Displacement
Shifts heavy unit loads over a 900 to 1000 mm reach, using the 33 mm adjustable air cushions to safely decelerate the 125 mm piston at the end of its travel.
Material Lowering
Lowers bulk material hoppers using the G1/2 air supply, relying on the external adjuster to set the exact drop height on site while an external check valve holds the load safely.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X1000-100S the Right Cylinder?
When sizing this actuator, the 125 mm bore sits at the top of the range, delivering 6136 N push and 5734 N pull at 0.5 MPa. If your application only requires around 3927 N of push force, stepping down to the 100 mm bore saves space and air volume. The adjustable stroke is ideal when you need to share one spare cylinder across multiple stroke variants or dial in a precise end position on the machine. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. The included -S magnet supports position sensing, and because the stroke is 1000 mm, external guide rails are strongly recommended to absorb side loads and prevent rod bending.
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 JSIJ125X1000-100S FAQ
At 0.5 MPa this 125 mm bore cylinder pushes 6136 N and pulls 5734 N. At 0.7 MPa the push is 8590 N and the pull is 8028 N. The theoretical maximum force is 1251 kgf at 1.0 MPa. It uses a G1/2 port, a 32 mm rod, and has 33 mm adjustable air cushions at both ends.
The -100 code means an external stop screw lets you shorten the extend stroke by up to 100 mm on site. The nominal 1000 mm stroke is the maximum, so the usable extend range is 900 to 1000 mm. The retract end is fixed, and the stop screw sets the end position but does not lock the load.
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