Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-30S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-30S 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 JSIJ125X200-30S
Delivering 6136 N of extend force at 0.5 MPa, this 125 mm bore JIS actuator brings heavy-duty power into a compact profile barrel that is significantly shorter than a same-bore ISO 15552 unit. The hard-anodized aluminium extrusion carries a G1/2 port, a 32 mm rod with an M27x2.0 thread, and 33 mm adjustable air cushions at each end. A built-in magnet (-S) allows CMSE or DMSE switches to drop directly into the side grooves for precise position sensing.
The external stop screw lets you trim the extend stroke by up to 30 mm on-site, giving a usable forward travel of 170 to 200 mm without swapping the cylinder, while the retract end remains fixed. This on-site tuning handles about 3682 N of real work safely, which means roughly 313 kg lifted vertically with a 2:1 margin. Note that a standard cylinder drifts on air loss, as the cushion only decelerates; use an external rod lock or pilot-operated check valve for held loads.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-30S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-30S |
|---|---|
| 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 JSIJ125X200-30S
| 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 JSIJ125X200-30S Is Used
Press Tonnage Calibration
Dial in the exact 185 mm extend stop on-site to set precise forming depth without machining custom spacers or changing the actuator body.
Heavy Pallet Positioning
Lift roughly 313 kg vertically using the 125 mm bore power, then fine-tune the end position by up to 30 mm to match varying pallet heights.
Shared Spare Inventory
Keep one 200 mm nominal stroke unit as a universal replacement, adjusting the forward travel down to 170 mm to fit multiple machine stations.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X200-30S the Right Cylinder?
When sizing this 125 mm bore actuator, its 6136 N push force at 0.5 MPa sits at the top of the range, so step down to an 80 mm bore if your load requires less than 2513 N to save space and air. The adjustable 170 to 200 mm extend window is ideal for sharing a single spare across multiple stroke variants or fine-tuning the end position during machine commissioning. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The included -S magnet supports CMSE/DMSE sensors, and for any stroke over 300 mm you should guide the load to prevent rod side-loading.
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 JSIJ125X200-30S 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 model uses a G1/2 port, a 32 mm rod, an M27x2.0 rod thread, and 33 mm adjustable cushions.
The 200 mm nominal stroke is the maximum forward travel. The external adjuster lets you shorten the extend stroke on-site by up to 30 mm, yielding a usable range of 170 to 200 mm. The retract end is fixed, and this stop mechanism sets the end position rather than locking the load.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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