Airtac JSI Series Standard Cylinder JSI50X50
The AirTAC Airtac JSI Series Standard Cylinder JSI50X50 is a genuine double acting JIS-standard air cylinder with a Ø50mm bore and 50mm stroke, G1/4 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.
- BoreØ50 mm
- Stroke50 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM18×1.5
- CushionAdjustable, 20.5 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 JSI50X50
Delivering 982 N of push force at 0.5 MPa, this double-acting JIS-standard profile cylinder saves valuable machine space by being noticeably shorter than an equivalent ISO 15552 unit of the same bore. The extruded hard-anodized aluminum barrel features no external rods, while a two-way piston seal retains grease for extended, low-friction operation. It connects via a G1/4 port and moves at 30-800 mm/s.
Because this specific SKU lacks the -S magnet, it cannot accept CMSE or DMSE position sensors. For practical sizing, plan for about 589 N of real work at 0.5 MPa, which translates to lifting roughly 50 kg vertically with a 2:1 safety margin.
Airtac JSI Series Standard Cylinder JSI50X50 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI50X50 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M18×1.5 |
| 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, 20.5 mm |
| Max standard stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 JSI50X50
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | 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 JSI50X50 Is Used
Package Diverting
Pushes small to medium parcels off a sorting line using 982 N of thrust, fitting neatly into tight transfer gaps.
Pallet Handling
Stages lightweight pallets or tote bins on a roller conveyor before they enter a stretch wrapper.
Clamping Jigs
Secures aluminum extrusions or plastic housings during CNC drilling without crushing the workpiece.
Is the Airtac JSI Series Standard Cylinder JSI50X50 the Right Cylinder?
When sizing this 50 mm bore, stepping down to a JSI40 drops the push force to 628 N, while moving up to a JSI63 increases it to 1559 N at 0.5 MPa. If your application requires end-of-stroke feedback, select the JSI50X50-S variant instead, as this base model cannot host magnetic switches.
Remember that standard pneumatic operation will not hold a load securely if air pressure drops or the valve is centered—the piston will drift. The adjustable air cushion only decelerates the rod near the end of its 50 mm travel, so fit an external rod lock or pilot-operated check valve for suspended loads.
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 JSI50X50 FAQ
The JSI50X50 generates 982 N push and 825 N pull at 0.5 MPa, or 1374 N push and 1154 N pull at 0.7 MPa, with a theoretical maximum of 200 kgf at 1.0 MPa. It uses a G1/4 air port and features a 20 mm piston rod with an M18x1.5 thread.
It is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same 50 mm bore, saving footprint on machinery. It achieves this via an extruded aluminum barrel design rather than external rods.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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