Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-30
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-30 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 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 JSIJ125X150-30
Delivering 6136 N of thrust at 0.5 MPa, this 125 mm bore JIS actuator brings heavy-duty force into a compact profile barrel that is noticeably shorter than a same-bore ISO 15552 cylinder. The hard-anodized aluminium extrusion keeps the assembly rigid without external rods, and the G1/2 port feeds the 32 mm piston rod for high flow. It safely handles about 3682 N of real work, which means you can lift roughly 313 kg vertically with a 2:1 safety margin.
The JSIJ125X150-30 code means the nominal 150 mm extend stroke can be shortened by up to 30 mm via an external stop screw, giving a usable range of 120 to 150 mm for on-site end-position tuning without swapping the cylinder. The retract end remains fixed, and the 33 mm adjustable air cushions at both ends decelerate the heavy payload smoothly. Note that this specific SKU lacks a magnet, so it cannot take CMSE or DMSE sensors; order a -S variant if you need position detection.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-30 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-30 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 JSIJ125X150-30
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×150 | 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 JSIJ125X150-30 Is Used
Press Fit Tuning
Use the 30 mm extend-shortening window to dial in the exact seating depth of a bearing press on the factory floor without machining new stops.
Heavy Pallet Stop
Leverage the 6136 N push force to halt large loaded pallets, adjusting the stop position by up to 30 mm to accommodate different pallet footprints.
Adjustable Lowering Deck
Lower heavy assemblies with controlled cushioning, tweaking the extend end-point on-site to match varying product heights before final locking.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X150-30 the Right Cylinder?
When sizing this 125 mm bore actuator, the 6136 N push force at 0.5 MPa sits at the top of the standard range, so step down to an 80 mm bore if your load is under 2500 N to save space and air. The adjustable stroke is ideal when you need to fine-tune a clamping or pressing end-point across multiple stations, or want a shared spare for slightly different stroke variants. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. Because this is a plain cylinder without a magnet, it cannot host sensors; add the -S suffix for CMSE/DMSE compatibility. For any stroke over 300 mm, always use a guide rail to prevent rod side-loading and premature seal wear.
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 JSIJ125X150-30 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. This 125 mm bore cylinder uses a G1/2 air port, a 32 mm rod with an M27x2.0 thread, and has 33 mm adjustable cushions at both ends.
The -30 in the model code means an external stop screw lets you shorten the extend stroke by up to 30 mm on-site. The usable extend range is 120 to 150 mm, with the nominal 150 mm being the maximum. The retract end is fixed. This stop only sets the end position; it is not a load lock, so you need an external rod lock or pilot-operated check valve to hold a load on air loss.
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