Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 200mm 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
- Stroke200 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 JSIJ125X200-75S
Delivering 6136 N of push force at 0.5 MPa, this large-bore JIS actuator brings heavy-duty motion into a profile barrel that is noticeably shorter than a same-bore ISO 15552 cylinder. The hard-anodized aluminum extrusion keeps the unit rigid without external rods, and the G1/2 port feeds the 32 mm piston rod to generate up to 1251 kgf of theoretical force at 1.0 MPa.
The -75 code means an external adjuster can shorten the extend stroke on-site by up to 75 mm, dropping the usable forward travel from the 200 mm maximum down to 125 mm while leaving the retract end fixed. This lets you fine-tune the end position without swapping the cylinder, and the -S suffix adds a piston magnet for CMSE/DMSE switches. In practice it handles about 3682 N of real work safely, lifting roughly 313 kg vertically with a 2:1 margin.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 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 JSIJ125X200-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×200 | 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 JSIJ125X200-75S Is Used
Press Tonnage Dial-In
Use the external adjuster to set the exact 125 to 200 mm extend reach on a heavy stamping or clamping press, ensuring perfect material contact without shimming.
Pallet Stopper Calibration
Fine-tune the stopping position of large loaded pallets on a conveyor by tweaking the forward stroke window on-site to match varying load dimensions.
Heavy Lift Positioning
Lift and place 300 kg fixtures vertically, relying on the 6136 N thrust and the precise extend-stop adjustment to hit exact upper datum points every cycle.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-75S the Right Cylinder?
At the top of the range, this 125 mm bore produces 6136 N push at 0.5 MPa; if that exceeds your requirement, stepping down to the 100 mm bore drops the force to 3927 N while saving space. The on-site adjustability is ideal when you need to share one spare cylinder across multiple stroke variants or dial in a final end position after mechanical assembly. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets, and the built-in magnet supports CMSE/DMSE sensors. Because the 200 mm stroke is relatively short for this bore, side-load risks are minimal, but for any stroke over 300 mm you should guide the rod end to prevent binding.
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 JSIJ125X200-75S FAQ
It pushes 6136 N and pulls 5734 N at 0.5 MPa. At 0.7 MPa it pushes 8590 N and pulls 8028 N. The theoretical maximum force is 1251 kgf at 1.0 MPa.
The nominal 200 mm stroke is the maximum forward travel. An external stop screw lets you shorten the extend stroke on-site by up to 75 mm, giving a usable range of 125 to 200 mm. The retract end is fixed, and this stop only sets the end position—it does not lock the load.
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