Airtac JSID Double Rod Cylinder JSID40X250S
The AirTAC JSID Double Rod Cylinder JSID40X250S is a genuine double acting, double rod JIS-standard air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke250 mm
- Port sizeG1/4
- Acting typeDouble acting, double rod
- Rod threadM14×1.5
- 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 JSID40X250S
Delivering 528 N of thrust in both directions at 0.5 MPa, this double-acting double-rod JIS profile cylinder uses a 40 mm bore and 250 mm stroke. The twin-rod layout means the piston pushes and pulls with identical force, offering excellent anti-twist guidance for symmetric loads. Its extruded hard-anodized aluminium profile barrel is notably shorter than an equivalent ISO 15552 cylinder of the same bore.
The adjustable air cushion at each end decelerates the motion near stroke end, though an external rod lock or pilot-operated check valve is required to hold a load securely on air loss.
Airtac JSID Double Rod Cylinder JSID40X250S Technical Specifications
| Model | Airtac JSID Double Rod Cylinder JSID40X250S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | 739 N |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod: the rod passes through both covers, so output force is equal in both directions.
Model Code: Airtac JSID Double Rod Cylinder JSID40X250S
| JSID | JIS-standard profile cylinder (double-rod type). |
|---|---|
| 40 | 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 JSID40X250S Is Used
Twin-Tool Transfer
Drives two synchronized grippers from opposite rod ends to transfer delicate wafers between processing stations without rotation.
Symmetric Lift Station
Balances an evenly distributed vertical lifting platform using both rod ends, ensuring stable elevation without mechanical twist.
Dual-End Cam Sensing
Uses the rear rod extension as a cam to trigger external limit sensors while the front rod executes the primary work stroke.
Is the Airtac JSID Double Rod Cylinder JSID40X250S the Right Cylinder?
This 40 mm bore sits between the smaller 32 mm option, which yields 345 N each way, and the larger 50 mm version, which provides 825 N at 0.5 MPa. Choose a double-rod configuration when your application demands non-rotating precision, twin tooling driven from both ends, or a symmetric load path. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. The included -S magnet enables direct CMSE/DMSE sensing along the side grooves. For this 250 mm stroke, ensure adequate external guide rails to prevent excessive side-loading on the piston rod.
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 JSID40X250S FAQ
Because it is a double-rod cylinder, force is equal both ways using the pull-side area. It generates 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a theoretical maximum of 108 kgf at 1.0 MPa. The air port size is G1/4.
No, a plain double-rod cylinder drifts on air loss or when 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 secure load holding, you must install an external rod lock or a pilot-operated check valve.
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.
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