Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-20
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-20 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 JSIJ125X175-20
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder brings heavy-duty motion into a compact footprint that is noticeably shorter than a same-bore ISO 15552 unit. The hard-anodized aluminium extruded barrel houses a 32 mm piston rod and uses a G1/2 port. With a nominal 175 mm stroke, the external adjuster allows you to shorten the extend travel on-site by up to 20 mm, yielding a usable range of 155-175 mm for fine-tuning the end position without swapping the actuator.
In practical terms this size handles a safe working load of about 3682 N, which translates to lifting roughly 313 kg vertically with a 2:1 margin. The retract end remains fixed while the stop screw sets the extend endpoint. Note that this plain SKU lacks a magnet and cannot accept CMSE/DMSE sensors, and the adjustable air cushions only decelerate the load near the stroke ends rather than holding it in place.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-20 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-20 |
|---|---|
| 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 JSIJ125X175-20
| 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 JSIJ125X175-20 Is Used
Heavy Pallet Lift
Raises loaded pallets in a compact dispatch cell, using the 20 mm extend window to dial in the exact transfer height without reprogramming the machine.
Press Clamping
Secures heavy workpieces for an industrial press, relying on the 6136 N push force and fine-tuning the final clamp position on-site.
Stamping Feed
Pushes thick metal blanks into a stamping die, adjusting the extend stroke by up to 20 mm to accommodate different blank widths on the same line.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X175-20 the Right Cylinder?
When sizing this actuator, stepping down to the 100 mm bore drops the 0.5 MPa push force to 3927 N, while this 125 mm bore provides 6136 N push and 5734 N pull. The on-site extend-shortening window is ideal for machines that share a common spare across slightly different stroke variants or need final end-position tuning during commissioning. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this is a no-S model, it cannot host a magnetic switch; add the -S variant for CMSE/DMSE sensing. For any stroke at or above 300 mm, always guide the load to prevent side-load damage to the rod seal.
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 JSIJ125X175-20 FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it delivers 8590 N push and 8028 N pull, with a theoretical maximum of 1251 kgf at 1.0 MPa. It features a 32 mm rod, M27x2.0 rod thread, G1/2 port, 33 mm adjustable cushions, and operates at 30-500 mm/s.
The nominal 175 mm stroke is the maximum extend travel. The external adjuster lets you shorten that extend stroke on-site by up to 20 mm, giving a usable range of 155-175 mm. The retract end is fixed, and the adjuster sets the end position rather than locking the load.
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