Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-50
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-50 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 160mm 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
- Stroke160 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 JSIJ125X160-50
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS actuator brings heavy-duty motion into a compact profile barrel that is noticeably shorter than a same-bore ISO 15552 unit. The G1/2 port feeds a robust 32 mm piston rod running at 30-500 mm/s, handling a safe working load of about 3682 N, which translates to roughly 313 kg lifted vertically with a 2:1 margin.
The -50 code defines an external adjuster that lets you shorten the extend stroke on site by up to 50 mm, yielding a usable extend range of 110-160 mm while the retract end stays fixed. You can fine-tune the end position without swapping the cylinder, and the 33 mm adjustable air cushions at both ends decelerate the payload smoothly. Note that this plain SKU lacks a magnet and cannot take a CMSE/DMSE sensor; for the sensing version you need the -S variant.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-50 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 JSIJ125X160-50
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×160 | 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 JSIJ125X160-50 Is Used
Heavy Press Toning
Dial in the exact 150 mm extend stop on a stamping press without machining a new spacer, absorbing heavy impact with the built-in cushion.
Pallet Positioning
Shift loaded pallets laterally with 8590 N of thrust at 0.7 MPa, adjusting the extend window on the fly to match varying pallet depths.
Stamping Height Trim
Fine-tune the downward extend stroke by up to 50 mm to accommodate different material thicknesses on a heavy stamping line.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X160-50 the Right Cylinder?
This 125 mm bore sits at the top of the range, so if 6136 N push at 0.5 MPa is excessive, step down to the 100 mm bore which offers 3927 N. The adjustable stroke is ideal when you need to share one spare cylinder across multiple stroke variants or fine-tune the extend end position on-site. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this SKU has no -S suffix, it cannot accept magnetic sensors. For any stroke over 300 mm, ensure external guide rails are used to prevent side-load damage to the rod.
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 JSIJ125X160-50 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. This 125 mm bore cylinder uses a G1/2 port.
The nominal 160 mm stroke is the maximum. The external adjuster lets you shorten the extend stroke on-site by up to 50 mm, giving a usable extend range of 110-160 mm. The retract end remains fixed. Note that this mechanism only sets the end position; it does not lock the load, so you need an external rod lock or pilot-operated check valve to hold a load against air loss.
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