Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-20S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 700mm 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
- Stroke700 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 JSIJ125X700-20S
Generating up to 6136 N of push force at 0.5 MPa, this 125 mm bore JIS profile cylinder is built for heavy-duty actuation. The hard-anodized aluminium barrel omits external rods, making the body shorter and more compact than a same-bore ISO 15552 unit. It handles about 3682 N of real work safely, which translates to lifting roughly 313 kg vertically with a 2:1 margin.
A built-in piston magnet (-S) allows CMSE or DMSE sensors to drop directly into the side grooves for position detection. The external stop screw provides a 20 mm on-site extend-shortening window, letting you fine-tune the end position between 680 and 700 mm without swapping the cylinder. Air connects via a G1/2 port, and adjustable cushions decelerate the load at both ends.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-20S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 JSIJ125X700-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×700 | 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 JSIJ125X700-20S Is Used
Heavy Pallet Lift
Raises loaded pallets in distribution hubs, using the 20 mm extend adjuster to set the exact upper stop without repositioning the frame.
Hydraulic Press Feed
Feeds heavy blanks into a forming press, relying on the 6136 N thrust at 0.5 MPa to push dense materials through a guide channel.
Mold Stage Adjustment
Extends large tooling molds on a production line, using the on-site stroke window to compensate for varying blank thicknesses.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-20S the Right Cylinder?
When sizing this actuator, compare the 125 mm bore against the neighbouring 100 mm option, which delivers 3927 N push at 0.5 MPa. The 125 mm bore is the top edge of this range, yielding 8590 N push at 0.7 MPa for demanding cycles. The 20 mm adjuster is ideal for sharing a spare across stroke variants or dialing in a precise end position on-site. JSIJ mounting choices include FA, LB, TC, TCM1, and TCM2. Because the stroke is 700 mm, always support the load with 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 JSIJ125X700-20S 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. The theoretical maximum force is 1251 kgf at 1.0 MPa.
The nominal 700 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 680 to 700 mm. The retract end remains fixed. This mechanism sets the end position and does not lock the load; use an external rod lock or pilot-operated check valve to hold a load securely.
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 JSIJ125X700-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.