Airtac JSID Double Rod Cylinder JSID50X250S
The AirTAC Airtac JSID Double Rod Cylinder JSID50X250S is a genuine double acting, double rod JIS-standard air cylinder with a Ø50mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/4
- Acting typeDouble acting, double rod
- 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 JSID Double Rod Cylinder JSID50X250S
Delivering 825 N of equal thrust in both directions at 0.5 MPa, this 50 mm bore double-rod actuator uses a symmetric piston rod out each end to prevent rotation and provide a stable load path. The G1/4 port feeds a hard-anodized aluminum profile barrel that is noticeably shorter than a same-bore ISO 15552 unit. Because the rod exits both covers, push and pull forces match exactly at 1154 N when running at 0.7 MPa.
This -S variant carries a built-in piston magnet for drop-in CMSE/DMSE sensors, letting you track position from either end. The twin rods make it ideal for driving two mechanisms simultaneously or mounting a rear sensor cam. Factoring a 60% safety margin, expect about 495 N of real working thrust, which translates to safely lifting a 42 kg vertical load with a 2:1 ratio.
Airtac JSID Double Rod Cylinder JSID50X250S Technical Specifications
| Model | Airtac JSID Double Rod Cylinder JSID50X250S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| 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 | Force (both ways) | — |
|---|---|---|
| 0.5 MPa | 825 N | 825 N |
| 0.7 MPa | 1155 N | 1155 N |
| Max (@1.0 MPa) | 200 kgf | |
Double-rod: the rod passes through both covers, so output force is equal in both directions.
Model Code: Airtac JSID Double Rod Cylinder JSID50X250S
| JSID | JIS-standard profile cylinder (double-rod type). |
|---|---|
| 50 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×250 | 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 JSID Double Rod Cylinder JSID50X250S Is Used
Dual-End Transfer Pusher
Uses the rod extending from the back cover to push a parallel lane of product simultaneously, keeping two conveyor lines perfectly synchronized.
Anti-Rotation Lift Assembly
Lifts a 42 kg machining fixture vertically without twisting, relying on the symmetric twin rods to maintain precise angular alignment.
Rear-Cam Sensing Station
Mounts a custom trip cam on the secondary rear rod to trigger external proximity sensors independently of the primary front tooling.
Is the Airtac JSID Double Rod Cylinder JSID50X250S the Right Cylinder?
Stepping down to the 40 mm bore yields 528 N each way, while moving up to the 63 mm bore provides 1402 N of symmetric force; this 50 mm bore sits comfortably in the middle at 825 N. Choose a double-rod configuration when your application demands anti-rotation guidance, twin tooling on one axis, or a symmetric load path. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the stroke is 250 mm, ensure external guide rails carry any heavy side loads to prevent rod binding.
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 JSID Double Rod Cylinder JSID50X250S FAQ
It features a G1/4 port and generates equal force in both directions: 825 N at 0.5 MPa and 1154 N at 0.7 MPa. The theoretical maximum force is 168 kgf at 1.0 MPa. Because it is a double-rod design, the push and pull values are identical.
No, a standard double-rod cylinder will drift if air is lost or the valve is centered. The adjustable 20.5 mm air cushions only decelerate the piston near the stroke ends and do not function as a brake. For load holding, you must install an external rod lock or a pilot-operated check valve.
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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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