The CD85N25-450C-B-X2018 is a single-lever double-acting cylinder manufactured by SMC, part of the C85 series and conforming to the ISO 6432 international standard.
This model has a 25mm bore, while the "X2018" suffix indicates a 450mm long-stroke custom specification, suitable for automation applications requiring long-distance push-pull operation. The cylinder barrel is made of stainless steel, and the cylinder heads at both ends are made of aluminum alloy, balancing durability and lightweight design. It also features an air-cushioned design to effectively absorb the end-of-stroke impact during long-stroke, high-speed operation, ensuring smooth operation.
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Core Features
- ✓ Long-stroke drive: A 450mm stroke makes it suitable for automation scenarios requiring long-distance push-pull or large-range displacement.
- ✓ Air cushioning: Utilizes air cushioning, absorbing the piston's impact at the end of its stroke through an adjustable buffer valve, suitable for high-speed (up to 1500mm/s) heavy-duty applications.
- ✓ Standard compatibility: Complies with ISO 6432 standards, offering high interchangeability of mounting connectors and convenient maintenance and replacement.
- ✓ Magnetic switch compatibility: Built-in magnet (model name starting with D) allows for easy installation of magnetic switches for position detection; the steel strip mounting method facilitates fine-tuning.
Technical Specifications
| Brand |
SMC |
| Model / Part Number |
CD85N25-450C-B-X2018 |
| Cylinder bore |
25 mm |
| Stroke |
50 mm (Custom long stroke specification X2018) |
| Actuation method |
Single rod double-acting |
| Operating pressure range |
0.05 MPa ~ 1.0 MPa |
| Operating temperature |
-10 ~ 60℃ |
| Operating piston speed |
50 ~ 1500 mm/s |
| Cushioning type |
Gas cushioning |
| Piping diameter |
G1/8 |
| Rod end thread |
M10×1.25 (external thread) |
| Cylinder material |
Stainless steel |
| Piston rod material |
Carbon steel |
Frequently Asked Questions
Q: What equipment is a 450mm long-stroke cylinder suitable for?
A: It is ideal for scenarios requiring long-distance horizontal pushing/pulling or vertical lifting, such as:
Packaging machinery: Long-distance material or carton pushing.
Automated production lines: Transferring workpieces from one station to another.
Gate control systems: Automatically pushing and pulling heavy-duty doors or protective covers.
Positioning mechanisms: Achieving wide-range linear positioning.
Q: How is the high-speed performance of this cylinder? Are there any impact issues?
A: This cylinder has a maximum permissible speed of 1500 mm/s, classifying it as a high-speed cylinder. For long-stroke, high-speed applications, air cushioning is a crucial function—it absorbs the enormous energy of the piston reaching its end at high speed through an adjustable buffer valve, smoothly decelerating while effectively reducing noise and impact, protecting the cylinder itself and the equipment structure.
Q: What type of magnetic switch should be used with the CD85N25-450C-B-X2018?
A: The "D" in the cylinder model indicates a built-in magnet, allowing for the installation of a magnetic switch. According to the specification sheet, this model uses a "B" type magnetic switch (steel strip mounting). We recommend using SMC's D-M9 or A9 series magnetic switches (such as D-M9B), which, with the steel strip, can be directly fixed to the cylinder and their position is easily fine-tuned. When ordering, you can specify the magnetic switch model, such as CD85N25-450C-B-X2018-M9BL.
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