Airtac JSI Series Standard Cylinder JSI100X25S
The AirTAC Airtac JSI Series Standard Cylinder JSI100X25S is a genuine double acting JIS-standard air cylinder with a Ø100mm bore and 25mm 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.
- BoreØ100 mm
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM26×1.5
- 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 JSI Series Standard Cylinder JSI100X25S
Delivering 3927 N of push force at 0.5 MPa, this 100 mm bore double-acting actuator fits tight machine envelopes while out-pulling smaller bores. As a JIS-standard profile cylinder, it is noticeably shorter and more compact than a same-bore ISO 15552 unit. The extruded hard-anodized aluminum barrel sheds external rods for a clean profile, and the two-way piston seal retains grease for low-friction service life.
Equipped with a piston magnet (the -S suffix), it accepts CMSE or DMSE reed and electronic switches that drop directly into the side grooves. Plan for about 2356 N of real work at 0.5 MPa, which translates to lifting roughly 200 kg vertically with a 2:1 safety margin. Air enters via the G1/2 port, and adjustable cushions at both ends decelerate the 32 mm rod over 33 mm at stroke ends.
Airtac JSI Series Standard Cylinder JSI100X25S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI100X25S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M26×1.5 |
| 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 – 800 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3525 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSI Series Standard Cylinder JSI100X25S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×25 | 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 JSI Series Standard Cylinder JSI100X25S Is Used
Injection Mold Clamping
Provides high clamping thrust for securing injection mold halves, utilizing the 3927 N push force within a compact machinery frame.
Pallet Stopper Gate
Acts as a heavy-duty stopper arm on palletizing conveyors, using the short 25 mm stroke to block or release 200 kg loads rapidly.
Press Pin Insertion
Drives solid pins into heavy steel assemblies on an automated line, where the 100 mm bore delivers enough force without requiring a full hydraulic system.
Is the Airtac JSI Series Standard Cylinder JSI100X25S the Right Cylinder?
When sizing this 100 mm bore actuator, compare it against its neighbors: a bore 80 unit provides 2513 N of push at 0.5 MPa, while the larger 125 mm bore yields 6136 N. This JSI100X25S is ideal when the 80 mm falls short but you still want a compact footprint. The 25 mm stroke keeps the rod extension minimal, reducing leverage stress. Because the -S magnet is present, you can fit CMSE or DMSE sensors without extra hardware. Note that standard double-acting cylinders drift when air is lost or a valve centers; the cushions only decelerate the piston near the end of travel and will not lock a suspended load. For vertical holding, install an external rod lock or a pilot-operated check valve.
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 JSI Series Standard Cylinder JSI100X25S FAQ
The 100 mm bore has a G1/2 port and a 32 mm rod. At 0.5 MPa it pushes 3927 N and pulls 3574 N. At 0.7 MPa it pushes 5497 N and pulls 5003 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 100 mm bore. It uses an extruded hard-anodized aluminum barrel without external rods, and this -S variant includes a magnet for side-groove CMSE/DMSE sensors.
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 JSI Series Standard Cylinder JSI100X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.