IP ratings for linear actuators

IP Ratings: Using Linear Actuators in Challenging Environments

Safety and Training | By Duff-Norton | Feb 12, 2018


What Is An IP Rating?

When operating a linear actuator in a challenging environment, such as a mining operation, there are a number of considerations you’ll need to keep in mind. It doesn’t get much harsher than operating in a mining environment where temperature, dust and water conditions aren’t always ideal. To ensure your products are protected against foreign debris, your linear actuators must have an Ingress Protection (IP) rating that shows it is built to function in these types of environments.

Breaking Down the IP Rating

This rating, also known as the Ingress Protection rating, is a recognized international standard for the degree of protection provided against the entry of solids and liquids. The IP rating consists of the letters ‘IP’, followed by two numbers and, in rare instances, a letter. The first number indicates the protection against solids while the second number refers to protection against liquids. The higher each number is, the higher level of protection provided.

Solids Protection

The level of protection against ingress of solid foreign particles is rated from zero to six, with the following distinctions:

Level

Object Size Protected Against

Effectiveness of Protection

0

Not protected

No protection against contact and ingress of objects.

1

> 50mm

Any large surface of the body, such as the back of the hand, but no protection against deliberate contact with a body part.

2

> 12.5mm

Fingers or similar objects.

3

> 2.5mm

Tools, thick wires, etc.

4

> 1mm

Most wires, screws, etc.

5

Dust protected

Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment; complete protection against contact.

6

Dust tight

No ingress of dust; complete protection against contact.

6 Dust tight No ingress of dust; complete protection against contact.

Liquids Protection - Waterproof Rating Chart

The level of protection against ingress of liquids is rated from zero to nine, with the following distinctions:

Level

Object Size Protected Against

Effectiveness of Protection

0

Not protected

No protection.

1

Dripping water

Dripping water (vertically falling drops) shall have no harmful effect.

2

Dripping water when tilted up to 15 degrees

Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15 degrees from its normal position.

3

Spraying water

Water falling as a spray at any angle up to 60 degrees from the vertical shall have no harmful effect.

4

Splashing water

Water splashing against the enclosure from any direction shall have no harmful effect.

5

Water jets

Water projected by a nozzle (6.3mm) against enclosure from any direction shall have no harmful effects.

6

Powerful water jets

Water projected in powerful jets (12.5 mm nozzle) against the enclosure from any direction shall have no harmful effects.

7

Immersion up to 1m

Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1m submersion).

8

Immersion beyond 1m

The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. Normally, this will mean that the equipment is hermetically sealed. However, with certain types of equipment, it can mean that water can enter but only in such a manner that it produces no harmful effects.

9

High pressure and temperature water jets

Water projected at high pressure and high temperature against the enclosure from any direction shall have no harmful effects

Finding the Right IP rating

At Duff-Norton, our linear actuators have varying IP ratings depending on their intended use. Our products that are used in challenging environments, including our XT, SPA, LT, and particularly our CMLA series, have a rating of IP66. This means that they are dust tight and protected against powerful water jets, which is sufficient for most industrial environments.

Contact Our Engineering Team For A Free Application Analysis

The XT series stands out in corrosive environments, maintaining functionality without compromise.

See the XT Series in Action

The SPA series is versatile and robust, ideal for a broad spectrum of uses.

Explore the SPA Series

Duff-Norton

As a leading engineering manufacturer of reliable industrial lifting and positioning products, Duff-Norton is comprised of individuals with in-depth industry experience. Articles authored by Duff-Norton belong to a collection of blogs written by product and application experts throughout the organization.

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