Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-30
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-30 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 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 JSIJ125X175-30
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder handles heavy-duty motion with ease. It features a hard-anodized aluminum barrel and sits noticeably shorter than a same-bore ISO 15552 unit. The G1/2 port feeds the 30-500 mm/s speed range, while the M27x2.0 rod thread and 33 mm adjustable cushions manage massive inertia.
The -30 code means an external adjuster can shorten the extend stroke on-site by up to 30 mm, giving a usable range of 145 to 175 mm without swapping the cylinder. This on-site tuning is ideal for dialing in exact end positions. In practice it handles about 3682 N of real work safely, lifting roughly 313 kg vertically with a 2:1 margin. Note this SKU lacks a magnet, so it cannot take CMSE/DMSE sensors.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-30 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-30 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 JSIJ125X175-30
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×175 | 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 JSIJ125X175-30 Is Used
Press Tonnage Trimming
Dial in the exact 145 to 175 mm extend reach on-site with the -30 mm adjuster to set precise press end positions without changing the hardware.
Heavy Pallet Stops
Leverage the 6136 N push force to halt massive pallet loads, using the 33 mm cushions to absorb the severe impact energy at the end of travel.
Mold Height Setup
Use the external stop screw to quickly shorten the extend stroke by 30 mm during mold changeovers, keeping the retract position fixed.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-30 the Right Cylinder?
When sizing this 125 mm bore, look at the neighboring 100 mm option for lighter loads, or step up if you exceed the 1251 kgf maximum at 1.0 MPa. The adjustable stroke shines when you need to fine-tune end positions on-site or want a shared spare across stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a no-magnet SKU, you cannot fit position sensors; add the -S variant for CMSE/DMSE switches. For any stroke over 300 mm, always use a guide 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 JSIJ125X175-30 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 is 1251 kgf at 1.0 MPa. The air port is G1/2.
The external adjuster shortens the extend stroke by up to 30 mm on-site, giving a usable range of 145 to 175 mm. The nominal 175 mm is the maximum. The retract end is fixed. This stop sets the end position but does not lock the load; use an external rod lock or pilot-operated check valve for load holding.
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