Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-40
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-40 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 160mm 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
- Stroke160 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 JSIJ125X160-40
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder brings heavy-duty actuation into a compact envelope that is noticeably shorter than a same-bore ISO 15552 unit. The hard-anodized aluminium barrel keeps the assembly light, and the G1/2 port matches the high flow demands of this large bore. It handles about 3682 N of real work safely, which translates to lifting roughly 313 kg vertically with a 2:1 margin.
The -40 code defines an external adjuster that lets you shorten the extend stroke on-site by up to 40 mm, giving a usable forward travel of 120 to 160 mm without changing the cylinder itself. The retract end remains fixed, while the adjustable air cushions at both ends absorb kinetic energy over a 33 mm stroke. Note that this SKU lacks a magnet and cannot take a CMSE or DMSE sensor; for that you need the -S variant. The stop screw sets end position only, so use an external rod lock or pilot-operated check valve if you must hold a load on air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-40 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-40 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 JSIJ125X160-40
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×160 | 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 JSIJ125X160-40 Is Used
Heavy Pallet Lift
Raises loaded pallets in a distribution hub, using the 40 mm adjuster to set the exact discharge height without repositioning the frame.
Hydraulic Press Feed
Feeds heavy billets into a forming press, relying on the 6136 N thrust and dialing back the extend stroke to clear the clamp.
Mold Stopper Block
Acts as a hard stop for large injection molds on a conveyor, trimming the 160 mm stroke down 40 mm to match changing mold widths.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-40 the Right Cylinder?
This 125 mm bore sits at the top of the range, pushing 6136 N and pulling 5734 N at 0.5 MPa; if your application only needs 3927 N of push, step down to the 100 mm bore to save space and air. The adjustable stroke is ideal when you need to fine-tune the extend end position on-site or want a single spare cylinder to cover several stroke variants from 120 to 160 mm. You can mount it via Basic, FA, LB, TC, TCM1, or TCM2 brackets. Because this is a non-magnet SKU, it cannot host position sensors. For any stroke over 300 mm, always guide the load to prevent side-load damage to the front cover packing.
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 JSIJ125X160-40 FAQ
At 0.5 MPa it 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 and runs at 30-500 mm/s.
The 160 mm nominal stroke is the maximum. The external adjuster lets you shorten the extend stroke by up to 40 mm on-site, yielding a usable forward travel of 120 to 160 mm. The retract end is fixed. This mechanism sets the end position only and does not lock the load.
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