Airtac JSI Series Standard Cylinder JSI100X250
The AirTAC Airtac JSI Series Standard Cylinder JSI100X250 is a genuine double acting JIS-standard air cylinder with a Ø100mm bore and 250mm 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
- Stroke250 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 JSI100X250
Delivering 3927 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder handles heavy-duty automation with ease. Built with an extruded hard-anodized aluminum barrel, the no-external-rod design is physically shorter and more compact than an ISO 15552 cylinder of the same 100 mm bore, saving valuable machine space. The internal two-way piston seal retains grease for a long, low-friction service life.
With a 250 mm stroke and a 32 mm hard-chrome piston rod, it operates at speeds of 30-800 mm/s and features adjustable air cushions at both ends to absorb impact. Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position switches. For sizing actuator loads, plan for about 2356 N of real work at 0.5 MPa, which safely lifts roughly 200 kg vertically with a 2:1 margin.
Airtac JSI Series Standard Cylinder JSI100X250 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI100X250 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 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 JSI100X250
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×250 | 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 JSI100X250 Is Used
Injection Mold Clamping
Provides the 3927 N push force needed to secure mid-sized injection mold halves during material injection cycles.
Heavy Press Assembly
Drives a 250 mm stroke to seat large bearings or mechanical housings into heavy machinery sub-assemblies.
Pallet Stopper Gate
Acts as a robust physical stop barrier on high-capacity conveyor lines to halt loaded pallets weighing up to 200 kg.
Is the Airtac JSI Series Standard Cylinder JSI100X250 the Right Cylinder?
When sizing this 100 mm bore unit, consider the 80 mm bore (pushing 2513 N at 0.5 MPa) for lighter duties, or step up to the massive 125 mm bore (6136 N at 0.5 MPa) if you need extreme thrust. This model uses a G1/2 port and an M26x1.5 rod thread. Since the 250 mm stroke is under the 300 mm threshold, standard mounting options like LB foot, FA/FB flange, or TC trunnion work well without severe side-load concerns.
Note that a standard cylinder drifts when air is lost or the valve is centered, as the adjustable cushion only decelerates the piston near stroke end rather than locking it. To maintain vertical position holding, integrate an external rod lock or a pilot-operated check valve. If you require position feedback, select the -S magnet variant to enable CMSE or 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 JSI Series Standard Cylinder JSI100X250 FAQ
This 100 mm bore cylinder features a G1/2 air port and an M26x1.5 rod thread. The thrust output is 3927 N push and 3574 N pull at 0.5 MPa, increasing to 5497 N push and 5003 N pull at 0.7 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
It is a JIS-standard profile cylinder that is physically shorter and more compact than an ISO 15552 cylinder of the same 100 mm bore. It uses an extruded hard-anodized aluminum barrel with no external rods, saving space while maintaining heavy thrust capabilities.
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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.
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