Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-75
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-75 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 JSIJ125X175-75
Generating 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder handles heavy-duty motion while remaining shorter and more compact than a same-bore ISO 15552 unit. The hard-anodized aluminium barrel keeps the assembly light, and the G1/2 port feeds the 32 mm rod to deliver reliable thrust. It safely carries about 3682 N of real work, which means lifting roughly 313 kg vertically with a 2:1 margin.
The JSIJ125X175-75 uses an external stop screw to shorten the extend stroke on-site by up to 75 mm, giving a usable forward range of 100-175 mm without swapping the cylinder. The retract end stays fixed, and the 33 mm adjustable air cushions at both ends decelerate the load smoothly. Note that this specific SKU lacks a magnet and cannot take a CMSE or DMSE sensor; adding the -S variant enables switch readiness.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-75 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-75 |
|---|---|
| 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 JSIJ125X175-75
| 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 JSIJ125X175-75 Is Used
Heavy Pallet Forming
Drives a 313 kg vertical press head to assemble pallets, using the 75 mm adjuster to dial in the exact crush depth for different wood thicknesses.
Stamping Depth Control
Provides 6136 N of raw push for metal stamping while the external stop screw shortens the extend stroke to prevent over-travel on delicate parts.
Bulk Gate Actuation
Opens heavy bulkhead gates in a compact JIS footprint, relying on the 33 mm cushions to absorb the massive kinetic energy of the 32 mm rod.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-75 the Right Cylinder?
When sizing this unit, dropping to a 63 mm bore lowers the 0.5 MPa push force to 1559 N, while stepping up is not possible as 125 mm is the maximum available bore. The 75 mm adjuster window is ideal for sharing a single spare cylinder across machines that need slightly different extend end-positions, letting you fine-tune the stroke on-site. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. Because this is a non-magnet version, it cannot support position sensing. For any stroke length over 300 mm, always use a guide rail to prevent side-load damage to the rod seals.
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 JSIJ125X175-75 FAQ
This 125 mm bore cylinder uses a G1/2 port and a 32 mm rod. It delivers 6136 N push and 5734 N pull at 0.5 MPa, or 8590 N push and 8028 N pull at 0.7 MPa. The theoretical maximum force is 1251 kgf at 1.0 MPa.
The nominal 175 mm extend stroke is the maximum. An external stop screw lets you shorten the forward stroke by up to 75 mm on-site, giving a usable range of 100-175 mm. The retract end is fixed, and the stop screw only sets the end position—it does not lock the load on air loss.
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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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