Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-75S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-75S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 500mm 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
- Stroke500 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 JSIJ125X500-75S
Handling heavy pneumatics, this 125 mm bore JIS profile cylinder delivers 6136 N of push force at 0.5 MPa. The hard-anodized aluminum barrel keeps the overall body more compact than a same-bore ISO 15552 unit. A built-in magnet (-S) allows CMSE or DMSE switches to drop directly into the side grooves for position sensing.
The external adjuster lets you trim the extend stroke on-site by up to 75 mm, giving a usable forward range of 425 to 500 mm without swapping the actuator. It handles about 3682 N of real work safely, which is roughly 313 kg lifted vertically with a 2:1 margin. Pneumatic connections use a G1/2 port, and the retract end remains fixed while you fine-tune the stop.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-75S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-75S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 500 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 JSIJ125X500-75S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×500 | 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 JSIJ125X500-75S Is Used
Heavy Pallet Lift
Raises loaded pallets in a packaging line, using the 75 mm adjuster to fine-tune the exact discharge height without reprogramming the machine.
Press Tonnage
Applies up to 8590 N of push at 0.7 MPa for assembling bearings, relying on the fixed retract end for consistent withdrawal.
Divert Arm Actuation
Drives a heavy sorting diverter on a conveyor, adjusting the extend stroke on-site to accommodate different box widths.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-75S the Right Cylinder?
When sizing this actuator, stepping down to a 100 mm bore drops the 0.5 MPa push force to 3927 N, while stepping up is not available as 125 mm is the maximum. The 75 mm adjustable window is ideal for sharing a single spare cylinder across multiple stroke variants or dialing in a final end position on the machine. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S suffix confirms the piston magnet is present for electronic or reed sensors. Because the 500 mm stroke is long, always support the load with an external guide to prevent rod bending and excessive side loading.
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 JSIJ125X500-75S FAQ
This 125 mm bore cylinder pushes 6136 N and pulls 5734 N at 0.5 MPa. At 0.7 MPa it pushes 8590 N and pulls 8028 N, with a theoretical maximum of 1251 kgf at 1.0 MPa. The air port is G1/2, the rod is 32 mm with an M27x2.0 thread, and speed ranges from 30-500 mm/s.
The nominal 500 mm extend stroke is the maximum. The external stop screw lets you shorten the forward stroke on-site by up to 75 mm, yielding a usable extend range of 425 to 500 mm. The retract end is fixed. Note that this stop only sets the end position; it does not hold the load on air loss, so use an external rod lock for vertical holding.
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Standard models are processed and dispatched in 3-5 business days.
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