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Introduction to the protection level of the spur gear slew drive
Publish time：2021/08/04 News Views：629
The protection grade is represented by IP X X. IP is the acronym for INGRESS PROTECTION and X X is two numbers.
The first number indicates the dustproof level of the spur gear slew drive and the level of preventing foreign objects from intruding (foreign objects including tools, foreign objects, human fingers, etc. can not touch the internal moving parts of the slewing drive to avoid personal injury or equipment damage).
The second number indicates the waterproof capability of the slewing drive. The value is larger that indicates the slewing drive has better waterproof ability.
The first number – dustproof grade introduction of the slewing drive:
| Number | Protection Range | Introduction |
| 0 | No protection | No special protection for people or things outside |
| 1 | Prevent the intrusion of solid foreign objects with a diameter > 50mm | Prevent the human body (such as palm) from accidentally contacting the internal parts of the slewing drive and prevent larger size foreign objects (diameter >50mm) from intruding |
| 2 | Prevent the intrusion of solid foreign objects with a diameter >12.5mm | Prevent the human fingers from touching the internal parts of the slewing drive and prevent medium size foreign objects (diameter >12.5mm) from intruding |
| 3 | Prevent the intrusion of solid foreign objects with a diameter >2.5mm | Prevent tools, iron wires and similar small foreign objects with a diameter or thickness >2.5mm from intruding and contacting the internal parts of the slewing drive |
| 4 | Prevent the intrusion of solid foreign objects with a diameter >1.0mm | Prevent tools, iron wires and similar small foreign objects with a diameter or thickness >1.0mm from intruding and contacting the internal parts of the slewing drive |
| 5 | Prevent foreign objects and dust | Completely prevent the intrusion of foreign objects. Although the intrusion of dust cannot be completely prevented, the amount of dust intrusion will not affect the normal operation of the slewing drive |
| 6 | Prevent foreign objects and dust | Completely prevent the intrusion of foreign objects and dust |
The second number – waterproof grade introduction of the slewing drive:
| Number | Protection Range | Introduction |
| 0 | No protection | No special protection against water or humidity |
| 1 | Prevent water droplets from immersing | Vertically falling water droplets (such as condensed water) will not cause damage to the slewing drive |
| 2 | When tilted 15 degrees, still can prevent water droplets from immersing | When the drive is tilted from vertical to 15°, dripping will not damage the slewing drive |
| 3 | Prevent the sprayed water from immersing | Rainproof or prevent the water sprayed from the direction with an angle of less than 60° from the vertical from intruding into the slewing drive and causing damage |
| 4 | Prevent splashing water from immersing | Prevent water splashing from all directions from invading the slewing drive and causing damage |
| 5 | Prevent sprayed water from immersing | Prevent low-pressure water spray that lasts at least 3 minutes |
| 6 | Prevent big waves from immersing | Prevent a large amount of water spray that lasts at least 3 minutes |
| 7 | Prevent water immersion during immersion | Prevent 30 minutes of immersion in water up to 1 m deep |
| 8 | Prevent water immersion when sinking | Prevent continuous immersion in water deeper than 1 meter |
The slewing drive produced by Unique Transmission adopts a fully enclosed design, which can reach the protection grade of IP65, that is it can be completely dustproof and can prevent the sprayed water from causing damage to the slewing drive. Let’s introduce the specific test requirements for the level 5 waterproof level.
Method name:
5 grade waterproof grade water spray test
Test equipment:
The water jet inner diameter of the nozzle is φ6.5mm
Test conditions:
The distance between the slewing drive and the water jet is 2.5m ~ 3m, the water flow is 12.5 L/min (750 L/h), the slewing drive is rotated normally.
Test time:
Calculated according to the slewing drive housing surface area, spray water for 1 min per square meter (not including installation surface area), spray water for at least 3 min.
Grade determination: After the slewing drive has done the water spray test, wipe the slewing drive dry, remove the slewing drive housing seals and slewing bearing seals, check whether the tooth meshing part and the slewing bearing raceway are filled with water, if there is no water entering, it means that the slewing drive has reached the 5 grade waterproof level. If water enters, it means that it has not been achieved 5 grade waterproof level and needs to be improved.
The slewing drive is used outdoors all-weather, generally reaching the protection grade of IP54, which is dustproof and prevent water splashing from all directions from intruding. In order to improve the reliability of the slewing drive and minimize the frequency of maintenance, we pursue a longer service life. Through reasonable design and precise cooperation, the slewing drive protection level of Unique Transmission has reached IP65. Such a product will bring you a different experience.
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