Airtac JSI Series Standard Cylinder JSI63X315S
The AirTAC Airtac JSI Series Standard Cylinder JSI63X315S is a genuine double acting JIS-standard air cylinder with a Ø63mm bore and 315mm stroke, G3/8 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.
- BoreØ63 mm
- Stroke315 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM18×1.5
- CushionAdjustable, 29 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 JSI63X315S
Delivering 1559 N of push force at 0.5 MPa, the AirTAC JSI63X315S is a double-acting JIS-standard profile cylinder built for tight machinery layouts. It is notably shorter and more compact than an ISO 15552 cylinder of the same 63 mm bore, saving valuable space without sacrificing power. The extruded hard-anodized aluminum barrel omits external rods to resist wear, while the two-way piston seal retains grease for a long, low-friction service life.
Because this SKU includes the -S magnet, you can drop CMSE or DMSE reed and electronic switches directly into the side sensor grooves for precise position detection. Operating at 30-800 mm/s on a G3/8 port, it provides a safe working load of about 935 N of real work at 0.5 MPa. That translates to lifting roughly 79 kg vertically with a 2:1 safety margin, helping you match the cylinder to actual part weights.
Airtac JSI Series Standard Cylinder JSI63X315S Technical Specifications
| Model | Airtac JSI Series Standard Cylinder JSI63X315S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 315 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 29 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 JSI63X315S
| JSI | JIS-standard profile cylinder (double-acting type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×315 | 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 JSI63X315S Is Used
Pallet Diversion
Lifts 79 kg pallets vertically with a 2:1 margin at 0.5 MPa to reroute heavy goods across a packaging line conveyor.
Vertical Gate Actuation
Extends 315 mm to open and close heavy material handling gates, relying on the hard-anodized barrel for wear resistance.
Press Ejection
Provides 935 N of safe working force to eject formed metal parts from a press bed, using CMSE sensors to confirm ejection.
Is the Airtac JSI Series Standard Cylinder JSI63X315S the Right Cylinder?
When sizing this 63 mm bore, stepping down to a 50 mm bore drops the push force to 982 N at 0.5 MPa, while moving up to an 80 mm bore increases it to 2513 N. The integrated -S magnet pairs perfectly with CMSE or DMSE sensors for end-of-stroke confirmation. With a 315 mm stroke, you must account for side loads and rod-bending moments; use an external guide rail to prevent premature seal wear and piston drift. Note that standard air cushions only decelerate the piston near the stroke ends and do not function as a brake. If the application requires holding a load vertically during air loss or valve centering, install an external rod lock or a pilot-operated check valve to prevent drifting.
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 JSI63X315S FAQ
The 63 mm bore provides a push force of 1559 N and a pull force of 1402 N at 0.5 MPa. At 0.7 MPa, push is 2182 N and pull is 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. It uses a G3/8 air port and features a 20 mm piston rod with an M18x1.5 rod-end thread.
The JSI is a JIS-standard profile cylinder that is shorter and more compact than an ISO 15552 cylinder of the same bore. It uses an extruded aluminum barrel without external rods to save machine space. This specific JSI63X315S model includes the -S magnet for CMSE/DMSE sensors and has adjustable air cushions at both ends.
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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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