Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-100S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-100S 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 JSIJ125X500-100S
Delivering 6136 N of push force at 0.5 MPa, this large-bore JIS actuator brings serious power to heavy-duty automation. Its extruded hard-anodized aluminum profile barrel keeps the overall envelope shorter and more compact than a same-bore ISO 15552 cylinder. The G1/2 port feeds the 32 mm rod to handle substantial loads, moving at 30-500 mm/s.
The external stop screw lets you fine-tune the extend stroke on-site, shortening it by up to 100 mm from the 500 mm maximum to dial in exact end positions without swapping hardware. It handles about 3682 N of real work safely, translating to roughly 313 kg lifted vertically. A built-in magnet (-S) supports CMSE/DMSE sensors in the side grooves for precise position detection.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-100S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-100S |
|---|---|
| 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 JSIJ125X500-100S
| 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 JSIJ125X500-100S Is Used
Heavy Press Tonnage
Provides steady 6136 N clamping force at 0.5 MPa for large metal forming and stamping presses.
Pallet Lift Positioning
Lifts heavy palletized loads up to 313 kg vertically, using the 100 mm adjuster to set exact raise heights.
Mold Height Tuning
Fine-tunes the extend end position on injection molding machinery without changing the cylinder body.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-100S the Right Cylinder?
When sizing this actuator, the 125 mm bore sits at the top edge of the range; if 8590 N of push at 0.7 MPa is excessive, step down to the 100 mm bore which offers 5497 N. The adjustable window shines when you need to tune the extend end-point on-site or want a single spare that covers multiple stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 500 mm stroke is long, always use external guides to prevent rod bending and manage side loads. Remember that the air cushion only decelerates the piston; for load holding on air loss, install an external rod lock or pilot-operated check valve.
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 JSIJ125X500-100S FAQ
At 0.5 MPa it delivers 6136 N push and 5734 N pull. At 0.7 MPa it outputs 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. It uses a G1/2 port and a 32 mm rod with an M27x2.0 thread.
The 500 mm nominal stroke is the maximum extend length. The external adjuster lets you shorten the extend stroke on-site by up to 100 mm, giving a usable range of 400-500 mm. The retract end is fixed, and this stop mechanism only sets the end position; it does not lock the load.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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