Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-10S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-10S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 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 JSIJ125X125-10S
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder brings heavy-duty actuation into a body noticeably shorter than a same-bore ISO 15552 unit. The hard-anodized aluminium extrusion omits tie rods entirely, and the G1/2 port handles the high air volume this large piston requires. A built-in magnet (-S) readies the barrel for CMSE or DMSE position switches that clip directly into the side grooves.
The -10 code defines a 10 mm external adjuster window, letting you fine-tune the extend end position on-site so the usable forward stroke spans 115 to 125 mm without swapping the actuator. In practical terms it handles about 3682 N of real work safely, which translates to lifting roughly 313 kg vertically with a 2:1 margin. Note that the retract end remains fixed, and while the adjustable air cushions absorb end-of-stroke impact, they do not lock the load if air pressure drops.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-10S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 JSIJ125X125-10S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×125 | 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 JSIJ125X125-10S Is Used
Press Tonnage Trimming
Use the 10 mm extend adjuster to dial in the exact bottom-dead-center pressing force on heavy assemblies without shimming the cylinder body.
Pallet Stop Calibration
Fine-tune the stopping height of large 313 kg loaded pallets on a conveyor by tweaking the extend position on-site to match varying load heights.
Heavy Lift Gate Positioning
Lift heavy industrial gates using the 6136 N thrust, relying on the external stop screw to set the precise 115 to 125 mm opening distance required for clearance.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X125-10S the Right Cylinder?
When sizing this heavy 125 mm bore actuator, dropping to an 80 mm bore yields 2513 N of push at 0.5 MPa, whereas this model provides 6136 N at the same pressure. The external adjuster is ideal for synchronizing multiple end positions from a shared spare, and you can mount it via FA, LB, TC, TCM1, or TCM2 brackets. Because the -S suffix includes a piston magnet, you can fit CMSE/DMSE reed or electronic sensors without extra hardware. For any stroke at or above 300 mm, always use an external guide rail to prevent side-load damage to the M27x2.0 rod thread and seals.
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 JSIJ125X125-10S 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. Operating speed for this 125 mm bore is 30-500 mm/s.
The -10 designates a 10 mm external adjustment window on the extend end. The nominal 125 mm stroke is the maximum, but you can shorten the forward stroke down to 115 mm on-site to fine-tune the end position. The retract end is fixed and cannot be adjusted.
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