Airtac JSI Series Standard Cylinder JSI50X515
The AirTAC Airtac JSI Series Standard Cylinder JSI50X515 is a genuine double acting JIS-standard air cylinder with a Ø50mm bore and 515mm 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
- Stroke515 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 JSI50X515
Delivering 982 N of push force at 0.5 MPa, this double-acting 50 mm bore unit handles substantial work within a tight footprint. Built to JIS specifications, its extruded hard-anodized aluminum profile is noticeably shorter and more compact than an equivalent ISO 15552 cylinder, saving valuable machine space. The two-way NBR piston seal retains grease for a long, low-friction service life.
Because this is a non-standard 515 mm stroke made-to-order unit, plan for about 589 N of real work at 0.5 MPa, which safely lifts roughly 50 kg vertically with a 2:1 margin. The hard-anodized barrel omits external rods, and the G1/4 air port matches the 50 mm bore standard. Note this SKU lacks the -S magnet, so it cannot accept CMSE or DMSE position sensors.
Airtac JSI Series Standard Cylinder JSI50X515 Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI50X515 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 515 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 JSI50X515
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×515 | 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 JSI50X515 Is Used
Pallet Diverters
Pushes heavy goods across conveyor lanes using the 982 N push force, while the compact profile fits neatly between tight transfer rollers.
Vertical Material Gates
Raises and lowers access doors on packaging lines, easily handling the 50 kg vertical load capacity at 0.5 MPa with a safe 2:1 margin.
Long-Reach Part Ejection
Cycles deep into a press bed to clear stamped parts, utilizing the 515 mm stroke alongside external guides to prevent rod bending.
Is the Airtac JSI Series Standard Cylinder JSI50X515 the Right Cylinder?
When sizing this 50 mm bore, dropping down to a 40 mm bore reduces thrust to 628 N at 0.5 MPa, while stepping up to a 63 mm bore increases it to 1559 N. For this specific non-standard 515 mm stroke, the extended 20 mm rod is highly susceptible to bending under lateral stress; always incorporate external linear guides to prevent side-load damage. The 20.5 mm adjustable air cushions at both ends decelerate the piston near stroke end, but they do not act as a brake. If the machine loses air, the piston will drift, so fit an external rod lock or pilot-operated check valve to hold a suspended load safely.
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 JSI50X515 FAQ
This 50 mm bore cylinder features a G1/4 air port and an M18x1.5 rod thread. It generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push and 1154 N pull at 0.7 MPa, with a theoretical maximum of 200 kgf at 1.0 MPa. Operating speed ranges from 30-800 mm/s.
No, because this specific SKU does not include the -S magnet option, it cannot accept CMSE or DMSE magnetic switches. You would need the -S variant for sensor groove compatibility. The JIS-standard extruded profile is also shorter and more compact than a same-bore ISO 15552 cylinder.
Authorized Export Seller
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.
Related AirTAC JSI Cylinders
Request a Quote for Airtac JSI Series Standard Cylinder JSI50X515
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.