Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-30S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-30S 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 JSIJ125X700-30S
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS actuator brings heavy-duty power to applications needing on-site end-position tuning. An external stop screw lets you shorten the extend stroke by up to 30 mm, giving a usable range of 670 to 700 mm while the retract end stays fixed. The nominal 700 mm stroke remains the maximum travel. This built-in adjuster means you can fine-tune the endpoint without swapping the cylinder, and the hard-anodized aluminum profile barrel keeps the total length shorter than a same-bore ISO 15552 unit.
The integrated -S piston magnet supports CMSE and DMSE reed or electronic sensors that mount directly into the side grooves. With a G1/2 port and a 32 mm rod, it handles a safe working load of about 3682 N, which translates to lifting roughly 313 kg vertically with a 2:1 margin. Note that the air cushion only decelerates the piston near the stroke ends; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve for held loads.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-30S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-30S |
|---|---|
| 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 JSIJ125X700-30S
| 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 JSIJ125X700-30S Is Used
Heavy Pallet Lift
Raises loaded pallets in distribution hubs, using the 30 mm extend window to fine-tune the exact raise height for different dock levels.
Press Ejection
Pushes heavy stamped parts out of a hydraulic press, relying on the 6136 N thrust and adjustable end position to clear the die.
Automated Storage
Actuates heavy shelving carriages in automated storage systems, dialing in the 670 to 700 mm extend reach to match bay depths.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X700-30S the Right Cylinder?
When sizing this model, the 125 mm bore sits at the top edge of the JSIJ range, offering 6136 N push at 0.5 MPa. If your task needs less force, stepping down to the 100 mm bore yields 3927 N push at the same pressure. The adjustable stroke is ideal when you need a shared spare across stroke variants or precise on-site endpoint tuning without machine disassembly. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the 700 mm stroke is long, always use an external guide rail to prevent rod bending and side-load damage. The -S suffix confirms the magnet is present for CMSE/DMSE sensors.
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 JSIJ125X700-30S 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 and has a 32 mm piston rod.
The external stop screw lets you shorten the extend stroke on-site by up to 30 mm. The usable extend travel is 670 to 700 mm, with the nominal 700 mm being the maximum. The retract end is fixed, and this stop sets the end position rather than locking the load.
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 JSIJ125X700-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.