Sichuan Meishan Shanbao Machine Mould Co., Ltd.
Sichuan Meishan Shanbao Machine Mould Co., Ltd.
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Customized Closed- End Roller Shells For VAN AARSEN CU900 With Strong Rolling Capacity
Introduction:
Shanbao Machinery, a trusted name in the feed machinery industry, founded in 1989, is a large-scale professional manufacturer of feed machinery fittings, integrating production, sales, and service. The headquarter is located at the new zone of Meishan Industrial Park, Sichuan, China.We have produced different roller shells for many famous machine, like Buhler, CPM, Andritz and some others. The Roller shell is another important accessory of the pellet mill. The roller and Dies work together to extrude the feed.
Characteristic:
Roller shells made from GCr15 high carbon chromium bearing steel offer a combination of outstanding mechanical properties and precision engineering. With a hardening layer depth greater than 5mm, a roller hardness of 58-61 HRC, controlled surface roughness, and tight coaxiality tolerances, these components are well-suited for demanding industrial applications. Investing in high-quality roller shells not only improves operational efficiency but also enhances the durability and reliability of machinery.
Parameter:
| Raw material | GCr15(High carbon chromium bearing steel) |
| Depth of hardening layer | > 5mm |
| Roller hardness | 58-61HRC |
| Surface roughness of bearing bore | Ra 0.8-1.6 |
| Coaxiality of inner and outer circles | ≤0.05mm |
How to select the roller shells:
From the surface consider
Straight teeth: have a strong rolling capacity but the materials will be dropped from the two sides.
Closed-end teeth: have a strong rolling capacity and the materials will not be dropped from the two sides. Because the material is easy to slip lead uneven wear, and is widely used in livestock and poultry feed production
Full Dimples: Poor rolling capacity, but the materials won’t be dropped from the sides with even wear.
Suggest to choose hole+teeth for stronger roller capacity and even wear.
From the modulus to consider
Modulus:1.5, 1.75, 2, 2.25, 2.5, 2.75, 3, 3.5, 4, 4.5, 5
| Modulus | Depth of the teeth | Teeth | Top width | Gap | Volume |
| 2 | 4 | 100 | 1.97 | 4.47 | 168770 |
| 2.5 | 4 | 80 | 3.33 | 4.72 | 150815 |
| 2.5 | 5 | 80 | 2.58 | 5.47 | 201403 |
Under the same depth of the teeth, coarse tooth (2.5modulus, depth 4) with lower volume and lower rolling capacity. It’s good to extend the grinding time and enhance the hardness of the pellets.
Smaller teeth ( 2modulus, depth 4) with higher volume and higher rolling capacity than the bigger ones.
The output is higher since the material comes out of the holes quickly, but the wear resistance is lower since the width of the teeth is too narrow.
Medium teeth ( 2.5modulus, depth 5) with the biggest volume, rolling capacity medium wear resistance. The material discharge speed is very fast. However, the high volume performance can not be fully utilized under certain conditions, as: lower opening rate and smaller holes.
Focus on the low yield and the hole’s opening rate can not be high for other reasons, you can select the medium teeth.
The fine teeth can be selected from the press roller to shorten the grinding time if the particles are hard.
If the particle is too soft and the secondary compression is easy to produce large particles, and the coarse teeth can be selected to extend the grinding time of the material in the dies.
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