Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-100S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-100S 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 JSIJ125X175-100S
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder brings heavy-duty actuation into a compact footprint that is noticeably shorter than a same-bore ISO 15552 unit. The hard-anodized aluminum extruded barrel houses a 32 mm rod and uses a G1/2 port. Because the external adjuster can shorten the extend stroke on-site by up to 100 mm, you get a usable 75 to 175 mm range without swapping the cylinder.
The built-in magnet (-S) supports CMSE/DMSE sensors in the side grooves for precise position feedback. In practical terms it handles about 3682 N of safe working load, which translates to lifting roughly 313 kg vertically with a 2:1 margin. Adjustable 33 mm air cushions at both ends manage deceleration, though the stop screw sets end position rather than locking the load.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-100S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-100S |
|---|---|
| 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 JSIJ125X175-100S
| 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 JSIJ125X175-100S Is Used
Heavy Pallet Lifting
Raises loaded pallets in distribution hubs, using the 100 mm extend adjustment to fine-tune the exact raise height for different dock levels.
Press Ejection Setup
Ejects heavy formed parts from a press bed, dialing back the extend stroke by up to 100 mm on-site to match varying die depths.
Vertical Gate Actuation
Drives substantial security gates where the 125 mm bore supplies the necessary push, while the stop screw sets the precise closed position.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-100S the Right Cylinder?
When sizing this unit, stepping down to an 80 mm bore yields 2513 N push at 0.5 MPa, while this 125 mm bore provides 6136 N at the same pressure, marking the top edge of the range. The -100 mm adjust window is ideal for sharing a single spare across multiple stroke variants or fine-tuning the extend end position on-site. Mounting options include FA, LB, TC, TCM1, and TCM2. The -S magnet enables CMSE/DMSE switches, and for any stroke at or above 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 JSIJ125X175-100S FAQ
At 0.5 MPa it delivers 6136 N push and 5734 N pull. At 0.7 MPa the output rises to 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. It uses a G1/2 port.
The external stop screw lets you shorten the extend stroke on-site by up to 100 mm, giving a usable extend range of 75 to 175 mm while the nominal 175 mm remains the maximum. The retract end is fixed. This mechanism sets the end position and does not lock the load.
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