Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-10S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-10S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 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 JSIJ125X225-10S
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder handles heavy automation tasks with ease. The hard-anodized aluminium barrel keeps the build highly compact, making it noticeably shorter than a same-bore ISO 15552 unit. A G1/2 port feeds the chamber, while the integrated magnet (-S) allows CMSE or DMSE sensors to drop directly into the side grooves for position detection.
The external stop screw lets you trim the extend stroke by up to 10 mm on site, giving a usable range of 215 to 225 mm without swapping the cylinder. This on-site tuning means you can safely handle about 3682 N of real work, or lift roughly 313 kg vertically with a 2:1 margin. The retract end remains fixed, and the 33 mm adjustable air cushions at both ends absorb kinetic energy. Note that the cushion only decelerates the piston; use an external rod lock or pilot-operated check valve if you need to hold a load on air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-10S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-10S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 JSIJ125X225-10S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×225 | 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 JSIJ125X225-10S Is Used
Press Fit Tuning
Use the 10 mm extend adjuster to dial in the exact bottoming position for a heavy press fit, ensuring parts seat perfectly without over-travel.
Heavy Pallet Lift
Lifts roughly 313 kg vertically with a 2:1 safety margin, making it suitable for raising heavy pallet bases or industrial fixtures.
Spare Stroke Standardization
Keep one 225 mm cylinder as a universal spare for 215 mm machines, using the external stop screw to match the shorter required stroke on site.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X225-10S the Right Cylinder?
When sizing this actuator, look at the neighbouring bores to ensure the 125 mm class is correct. Stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while this 125 mm unit outputs 6136 N, making it the right choice when the smaller bores lack thrust. The 10 mm adjustable extend window is ideal for sharing a spare cylinder across slightly different stroke variants or fine-tuning an end position. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix confirms the piston magnet is present for CMSE/DMSE switches. Because the 225 mm stroke is relatively short, side-load stress is minimal, but always guide the load for any stroke over 300 mm.
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 JSIJ125X225-10S FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it provides 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. The air port is G1/2.
The nominal 225 mm extend stroke is the maximum. An external stop screw lets you shorten the extend stroke by up to 10 mm on site, yielding a usable range of 215 to 225 mm. The retract end is fixed, and this mechanism sets the end position rather than locking the load.
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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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