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The Slake Durability Apparatus is a specialized device designed for testing the durability of rocks, gravel, and slag. It provides reliable results for civil engineering applications, helping assess the stability and performance of materials under different environmental conditions. This apparatus is ideal for use in research, quality control, and construction projects..
The Slake Durability Apparatus is a vital tool for civil engineers and researchers testing the durability of rocks, gravel, and slag. Its reliable performance, ease of use, and customizable specifications make it an ideal choice for material testing and quality control in construction and mining industries.

The NBJ-II slake durability Apparatus is mainly used to determine the durable disintegration index of rocks. It can test the durability of rocks that can resist disintegration due to the influence of weather. The device rotates two drum-shaped sample boxes at a speed of 20 revolutions per minute through a motor fixed on the bottom of the device. The drum-shaped sample box is mounted on a bearing coated with lubricant, and there is no resistance when rotating. The drum-shaped sample box is made of corrosion-resistant materials and is equipped with two water tanks. It is widely used in various universities, scientific research institutes, test centers, etc. to determine clay rocks and weathered rocks, etc.
Product Description
1. Host power: 50W
2. Speed: 20 rpm
3. Sieve tube: φ140*100mm
4. Standard sieve aperture: 2mm
5. Water tank volume: 200*170*120mm
6. Specimen specifications: 40~60g each, 10 pieces in total
7. Specimen shape: roughly spherical shape, no edges and corners
8. Dimensions: 900*300*500mm
The equipment is supplied complete with two drums with tanks, and it can accept two additional drums.

Specification
| Model | NBJ-II |
| Product Name | Slake Durability Apparatus |
| Host power | 50W |
| Speed | 20 rpm |
| Working voltage | 220V/50Hz or Customized |
| Sieve tube | φ140*100mm |
| Standard sieve aperture | 2mm |
| Water tank volume | 200*170*120mm |
| Specimen specifications | 40~60g each, 10 pieces in total |



The Slake Durability Apparatus is primarily used to test the durability of rocks, gravel, and slag, assessing their stability and performance under various environmental conditions.
The apparatus operates at a constant speed of 20 revolutions per minute (RPM) for standardized testing conditions.
The Slake Durability Apparatus is equipped with a standard sieve aperture of 2mm for accurate material separation during testing.
The specimen size specifications range from 40g to 60g, allowing flexibility for different types of material testing.
The water tank has a volume of 200mm x 170mm x 120mm, providing ample space for the testing process.
The sieve tube has a diameter of 140mm and a length of 100mm, designed to accommodate various test materials.
The Slake Durability Apparatus operates on a 220V 50Hz power supply, but it can be customized to meet specific requirements.
The overall dimensions of the apparatus are 1000mm x 400mm x 540mm, making it compact and easy to integrate into testing labs and field setups.
The unit consumes 50W of power, making it energy-efficient for continuous operation.
The apparatus is designed to test the durability of rocks, gravel, and slag, particularly clay rocks and weathered rocks.
Yes, the Slake Durability Apparatus is ideal for use in research, quality control, and construction projects.
Yes, it helps assess the stability and performance of materials under different environmental conditions.
The apparatus can test up to 10 specimens at one time, each weighing between 40g and 60g.
The drum-shaped sample box is made of corrosion-resistant materials, ensuring durability during testing.
It is widely used in universities, scientific research institutes, and test centers for durability testing of various materials.
No approved technical specifications are available yet. Please refer to the product description or contact our team.
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