Airtac JSI Series Standard Cylinder JSI100X70S
The AirTAC Airtac JSI Series Standard Cylinder JSI100X70S is a genuine double acting JIS-standard air cylinder with a Ø100mm bore and 70mm 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
- Stroke70 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 JSI100X70S
Delivering 3927 N of push force at 0.5 MPa, the AirTAC JSI100X70S is a JIS-standard double-acting profile cylinder built for heavy machinery. Its extruded hard-anodized aluminum barrel omits external rods, making the unit shorter and more compact than an ISO 15552 cylinder of the same 100 mm bore. The design saves valuable space on tight equipment frames while maintaining high structural rigidity.
A heterogeneous two-way piston seal retains grease for long, low-friction life, and the integrated -S piston magnet allows CMSE or DMSE switches to drop directly into the side grooves for position sensing. Because the 3927 N rating leaves a safety margin, plan for about 2356 N of real work at 0.5 MPa, which translates to lifting roughly 200 kg vertically with a 2:1 factor. The G1/2 air port handles the required volume for 30-800 mm/s cycling.
Airtac JSI Series Standard Cylinder JSI100X70S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI100X70S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 70 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 JSI100X70S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×70 | 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 JSI100X70S Is Used
Injection Mold Clamping
Provides 3927 N of push at 0.5 MPa to hold heavy mold halves or platens securely in place during plastic injection cycles.
Press Ejection Systems
Generates enough thrust to eject dense metal or composite parts from hydraulic press beds without requiring external hydraulics.
Pallet Dispenser Pusher
Pushes empty or loaded pallets along heavy-duty roller conveyors, safely moving loads up to 200 kg vertically with a 2:1 margin.
Is the Airtac JSI Series Standard Cylinder JSI100X70S the Right Cylinder?
When sizing this 100 mm bore, compare it against the 80 mm option (2513 N push @0.5 MPa) for lighter duties, or the 125 mm model (6136 N push @0.5 MPa) if you need extreme thrust. The 70 mm stroke keeps the rod short, minimizing side-load bending risks, but always guide the load mechanically to prevent rod warping. The included -S magnet pairs perfectly with CMSE/DMSE sensors for end-of-stroke confirmation.
Remember that a standard cylinder drifts when air is lost or the valve is centered; the adjustable 33 mm end cushions only decelerate the piston near stroke limits and do not act as a brake. To hold a load securely mid-stroke, install an external rod lock or a pilot-operated check valve in the air line.
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 JSI100X70S FAQ
At 0.5 MPa it provides 3927 N push and 3574 N pull. 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, and the piston rod thread is M26x1.5.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore. The -S suffix indicates a built-in piston magnet, enabling CMSE or DMSE electronic or reed switches to mount directly into the extruded barrel's side grooves.
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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.
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Most inquiries answered within 7-8 hours.
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