Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-40
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-40 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 JSIJ125X500-40
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore pneumatic actuator tackles heavy industrial moves with ease. It handles a safe working load of about 3682 N, which means you can lift roughly 313 kg vertically with a 2:1 safety margin. The G1/2 port feeds the chamber efficiently, while the hard-anodized aluminum profile barrel keeps the total envelope more compact than a same-bore ISO 15552 unit.
This double-acting single-rod JIS cylinder features an external adjuster that shortens the extend stroke on-site by up to 40 mm. You get a usable forward travel of 460 to 500 mm, letting you fine-tune the end position without swapping the actuator. The retract end remains fixed, and the 33 mm adjustable air cushions at both ends decelerate the payload smoothly.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-40 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-40 |
|---|---|
| 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 JSIJ125X500-40
| 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 JSIJ125X500-40 Is Used
Heavy Pallet Destrapping
Clamps and holds large bonded pallets securely while the external adjuster dials the exact 460 mm reach needed to sever steel bands without repositioning the actuator.
Press Ram Positioning
Provides up to 8590 N of thrust at 0.7 MPa for light assembly presses, using the 40 mm shortening window to set precise bottom-dead-center on the fly.
Bulk Container Gating
Actuates heavy diverter gates in high-flow logistics lines, relying on the robust 125 mm bore to push fully loaded totes reliably through the 500 mm travel.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-40 the Right Cylinder?
When sizing this actuator, the 125 mm bore sits at the top of the range, offering a massive 8590 N push at 0.7 MPa compared to 5497 N from the 100 mm option. If your application only needs 3518 N at 0.7 MPa, stepping down to the 80 mm bore saves space and air. The -40 mm adjustable window is ideal for sharing a spare across stroke variants or dialing in exact end positions on-site. You can mount it via FA, LB, TC, TCM1, or TCM2 brackets. Because this SKU lacks the -S suffix, it cannot accept a CMSE or DMSE magnetic sensor. For the 500 mm stroke, always use an external guide to prevent rod bending and 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 JSIJ125X500-40 FAQ
It uses a G1/2 port and generates 6136 N push and 5734 N pull at 0.5 MPa. At 0.7 MPa it yields 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa.
An external stop screw lets you shorten the extend stroke on-site by up to 40 mm. The usable forward travel becomes 460 to 500 mm, with 500 mm being the maximum. The retract end is fixed, and this mechanism only sets the end position, so you still need an external rod lock to hold a load on air loss.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC JSI Cylinders
Request a Quote for Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X500-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.