Axle-Zhejiang Xuao Intelligent Technology Co., Ltd.

Axis
All the load of the roller is transmitted to the machine (support) frame through the shaft, so the selection of the shaft is particularly important.
Please note our standard practice: when using stainless steel or PVC as a simplified material, the surface of the shaft is only galvanized, while in most other cases (steel, galvanized), the surface treatment method of the shaft is to apply anti rust oil. Of course, this can be determined according to your requirements.
The installation method determines the complexity of roller installation/disassembly, and different installation methods can also affect the bearing capacity of the shaft. The following are several common installation methods and their characteristics:

Spring compression type:
1. Common installation methods in unpowered rollers make installation and disassembly convenient and fast;
2. It is necessary to add pull rods between the racks to stabilize and reinforce the conveyor;
3. The mounting hole of the rack is slightly larger than the shaft diameter, usually+0.5mm;
4. There needs to be a certain installation allowance between the width of the frame and the rollers. On the one hand, this is a need for inclined installation, and on the other hand, it is also a consideration for the installation accuracy of the frame (it is recommended to leave a 1mm installation allowance on one side, totaling 2mm);
5. It is not recommended to use a spring pressed installation method for the sprocket roller, as it may have unexpected usage problems.

Internal thread:
1. It is a commonly used installation method for chain wheel rollers. The rollers are connected to the frame through bolts at both ends, which is firm and stable;
2. The installation and disassembly time is longer than other installation methods;
3. The shaft length is equal to the internal width of the frame, and we usually take a negative deviation of about -0.5mm during processing;
4. The frame opening should be as small as possible to reduce the height difference after roller installation, and the gap should not exceed 0.5mm;
5. When using an aluminum profile frame, a shaft with the largest possible diameter and the smallest possible thread size should be selected to minimize the risk of shaft penetration through the aluminum profile.

Flat tenon:
1. Originating from the mining roller group, the circular shaft end is milled and clamped into the corresponding frame groove, making installation and disassembly extremely simple;
2. The roller lacks constraints in the upward direction, so it is mostly used for belt conveyor idlers and is not suitable for power transportation such as chain wheel rollers and multi wedge pulley rollers;
3. The installation method of inserting the shaft into the flat tenon hole of the frame has been derived, completely eliminating the possibility of shaft rotation, and is mostly used for adjustable accumulation and release of rollers.