Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 50mm 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
- Stroke50 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 JSIJ125X50-10S
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore pneumatic actuator tackles heavy-duty motion with ease. It handles about 3682 N of real work safely, which means you can lift roughly 313 kg vertically with a 2:1 margin. The G1/2 port feeds the chamber efficiently to keep speed within the 30-500 mm/s range.
An external adjuster lets you shorten the extend stroke on-site by up to 10 mm, giving a usable range of 40-50 mm without swapping the cylinder. The nominal 50 mm stroke remains the maximum, while the retract end stays fixed. Built as a JIS-standard profile cylinder, it is noticeably shorter and more compact than a same-bore ISO 15552 unit. The hard-anodized aluminum barrel skips external rods for a clean exterior, and the -S suffix means a built-in magnet is ready for CMSE/DMSE sensors.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 50 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 JSIJ125X50-10S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | 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 JSIJ125X50-10S Is Used
Heavy Pallet Forming
Presses heavy pallets together with 6136 N of force, using the 10 mm extend adjustment to dial in the exact clamp distance on-site.
Industrial Pressing
Provides steady 0.5 MPa thrust for compacting materials, relying on the 33 mm adjustable air cushions to decelerate the heavy 125 mm piston smoothly.
Bulk Lift Gate
Raises bulk containers with a safe working load around 3682 N, using the built-in magnet to confirm the fully raised position.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X50-10S the Right Cylinder?
When sizing this actuator, the 125 mm bore sits at the top edge of the range, offering 6136 N push and 5734 N pull at 0.5 MPa; dropping to an 80 mm bore cuts that thrust to 2513 N. The 10 mm adjustable window is ideal for fine-tuning the extend end position on-site or sharing a single spare across multiple stroke variants. You can mount it using basic, FA, LB, TC, TCM1, or TCM2 brackets. Because the -S magnet is present, you can drop CMSE or DMSE reed and electronic switches directly into the side grooves. For any stroke reaching 300 mm or more, always guide the load to prevent side-load damage.
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 JSIJ125X50-10S 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 features a 32 mm rod with an M27x2.0 thread.
The external stop screw lets you shorten the extend stroke by up to 10 mm on-site, giving a usable extend range of 40-50 mm. The nominal 50 mm stroke is the maximum, and the retract end is fixed. This mechanism only sets the end position; it does not lock the load, so you need an external rod lock or pilot-operated check valve to hold a load without live air.
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1-Year Warranty
Covers non-human-caused product damage.
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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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