Airtac JSI Series Standard Cylinder JSI100X275S
The AirTAC Airtac JSI Series Standard Cylinder JSI100X275S is a genuine double acting JIS-standard air cylinder with a Ø100mm bore and 275mm 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
- Stroke275 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 JSI100X275S
Delivering 3927 N of push force at 0.5 MPa, the AirTAC JSI100X275S is a double-acting JIS-standard profile cylinder built for heavy-duty automation. Its extruded hard-anodized aluminum barrel omits external rods, making the unit significantly shorter and more compact than an ISO 15552 cylinder of the same 100 mm bore. A heterogeneous two-way piston seal retains grease for long, low-friction life, while the -S suffix means a built-in magnet enables CMSE or DMSE sensors to drop directly into the side grooves for position detection.
Featuring a 32 mm piston rod, a G1/2 air port, and M26x1.5 rod-end threading, this 275 mm stroke model operates at speeds of 30-800 mm/s. For practical sizing, plan for about 2356 N of real work at 0.5 MPa, which safely lifts roughly 200 kg vertically with a 2:1 margin. Adjustable 33 mm air cushions at both ends decelerate the piston smoothly near stroke end.
Airtac JSI Series Standard Cylinder JSI100X275S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI100X275S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 275 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 JSI100X275S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×275 | 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 JSI100X275S Is Used
Injection Mold Clamping
Provides 3927 N of push force at 0.5 MPa to secure mid-sized injection mold halves, utilizing the 275 mm stroke to clear the part ejection zone efficiently.
Pallet Diverting
Shifts heavy product pallets on a packaging line, where the compact JIS profile saves valuable machine footprint compared to standard ISO 15552 units.
Vertical Lift Gate
Raises a 180 kg material handling gate, operating safely within the 200 kg vertical lift capacity calculated with a 2:1 safety margin at 0.5 MPa.
Is the Airtac JSI Series Standard Cylinder JSI100X275S the Right Cylinder?
When sizing this 100 mm bore, verify if the 80 mm class (providing 2513 N push at 0.5 MPa) is sufficient, or if you need to step up to the 125 mm bore (6136 N push at 0.5 MPa) for heavier loads. The 275 mm stroke falls below the 300 mm threshold, so standard side-load concerns are minimal, but always ensure the rod knuckle or mounting bracket aligns with the load to prevent premature wear. Choose from LB foot, FA/FB flange, CA/CB/CR clevis, or TC/TCM1/TCM2 trunnion mounts.
Because the -S magnet is present, you can directly install CMSE or DMSE reed or electronic switches into the barrel grooves. Remember that a standard cylinder drifts if air pressure is lost or the valve is centered; the air cushion only decelerates the stroke and does not act as a brake. For suspended or vertical loads that must be held in place during an air loss event, 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 JSI100X275S FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N push and 3574 N pull force. At 0.7 MPa, it delivers 5497 N push and 5003 N pull. The theoretical maximum force is 801 kgf at 1.0 MPa. The air port size is G1/2.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore. It does not hold its load if air is lost or the valve is centered, as the cushions only decelerate the piston near stroke end. Use an external rod lock for position holding.
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