Airtac JSI Series Standard Cylinder JSI100X255S
The AirTAC Airtac JSI Series Standard Cylinder JSI100X255S is a genuine double acting JIS-standard air cylinder with a Ø100mm bore and 255mm 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
- Stroke255 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 JSI100X255S
Delivering 3927 N of push force at 0.5 MPa, the AirTAC JSI100X255S is a heavy-duty double-acting actuator built around a JIS-standard profile. Its extruded, hard-anodized aluminum barrel contains no external rods, making the overall envelope shorter and more compact than an equivalent ISO 15552 cylinder of the same 100 mm bore. This space-saving geometry is invaluable on large-format machinery where real estate is tight.
The -S suffix denotes a built-in piston magnet, allowing CMSE or DMSE electronic switches to drop directly into the side sensor grooves for precise position detection. A heterogeneous two-way piston seal retains grease for a long, low-friction service life, while the G1/2 air ports supply the 32 mm carbon steel rod. For practical sizing, 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.
Airtac JSI Series Standard Cylinder JSI100X255S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI100X255S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 255 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 JSI100X255S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×255 | 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 JSI100X255S Is Used
Injection Mold Clamping
Provides 3927 N of push force at 0.5 MPa to secure heavy injection mold halves or large press platens, utilizing the 255 mm stroke for wide mold openings.
Pallet Diversion
Lifts or pushes heavy loaded pallets weighing up to 200 kg onto secondary packaging lines, relying on the hard-anodized barrel for wear resistance in dusty environments.
Automated Storage Retrieval
Acts as a robust extractor arm in automated storage and retrieval systems, where the built-in magnet allows CMSE sensors to confirm part handoff at 30-800 mm/s.
Is the Airtac JSI Series Standard Cylinder JSI100X255S the Right Cylinder?
When sizing this 100 mm bore actuator, verify your actual load requirements against the 3927 N push and 3574 N pull ratings at 0.5 MPa. If your application demands less force, stepping down to the 80 mm bore yields 2513 N of push force, saving physical envelope and air consumption. Conversely, if you need more power, the 125 mm bore provides 6136 N of push force. Because this is a 255 mm stroke, standard mounting options like LB foot, FA/FB flange, CA/CB clevis, or TC trunnion are all viable without excessive side-loading concerns.
Remember that the adjustable air cushions at both ends only decelerate the piston near the stroke limits; they do not function as a lock. If the air supply is lost or the valve is centered, the rod will drift. To safely hold a load in mid-stroke, integrate an external pilot-operated check valve or a dedicated rod lock mechanism. The included magnet ensures you can easily track piston position with 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 JSI100X255S FAQ
This 100 mm bore cylinder features a 32 mm rod, M26x1.5 rod thread, and G1/2 air ports. It generates 3927 N push and 3574 N pull at 0.5 MPa, 5497 N push and 5003 N pull at 0.7 MPa, with a theoretical maximum of 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 aluminum barrel with no external rods to save machine space, and the -S magnet allows drop-in CMSE/DMSE sensor integration.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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