Airtac JSID Double Rod Cylinder JSID40X250
The AirTAC JSID Double Rod Cylinder JSID40X250 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 JSID40X250
Delivering 528 N of thrust in both directions at 0.5 MPa, the AirTAC JSID40X250 uses a twin-rod layout where a single piston drives a shaft out both covers. This symmetric load path resists torsion and lets you mount tooling or a sensor cam at the back end. The hard-anodized extruded aluminum barrel keeps the body shorter than an equivalent ISO 15552 unit, and the G1/4 porting matches the 40 mm bore.
With a 250 mm stroke, this non-magnetic SKU cannot host position sensors, so choose the -S variant if you need CMSE or DMSE switches. The adjustable air cushions at each end only decelerate the piston near travel limits; they will not hold a load on air loss, so fit an external rod lock or pilot-operated check valve for vertical safety.
Airtac JSID Double Rod Cylinder JSID40X250 Technical Specifications
| Model | Airtac JSID Double Rod Cylinder JSID40X250 |
|---|---|
| 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 JSID40X250
| 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 JSID40X250 Is Used
Twin-Tool Transfer
Drives two opposing grippers simultaneously from one piston, keeping pick-and-place timing perfectly synchronized without torsional twist.
Symmetric Pusher
Pushes a workpiece from the front while the rear rod moves an identical distance to trip a mechanical cam, maintaining a balanced load path.
Is the Airtac JSID Double Rod Cylinder JSID40X250 the Right Cylinder?
Sizing this 40 mm bore against its neighbors shows a clear step: the 32 mm bore yields 345 N each way at 0.5 MPa, while the 50 mm bore jumps to 825 N. The JSID40X250 hits the sweet spot at 528 N both ways. A double-rod design is the right call when you need anti-rotation guidance, twin tooling driven from one piston, or a symmetric load path. Mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this is a plain SKU without a magnet, it cannot take sensors, but the -S version adds CMSE/DMSE compatibility. For this 250 mm stroke, ensure you provide an external guide to absorb any side-load forces.
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 JSID40X250 FAQ
Because the rod exits both ends, force is equal in both directions: 528 N at 0.5 MPa and 739 N at 0.7 MPa. The theoretical maximum is 108 kgf at 1.0 MPa. This 40 mm bore cylinder uses a G1/4 air port.
No. The adjustable air cushions only decelerate the piston near the end of stroke and do not act as a brake. If you need to hold a load against gravity or during air loss, 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.
Related AirTAC JSI Cylinders
Request a Quote for Airtac JSID Double Rod Cylinder JSID40X250
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.