Angular contact ball bearings and deep groove ball bearings are two common types of ball bearings used in various applications. While both types serve the purpose of reducing friction between moving parts and supporting radial and axial loads, they have distinct differences in design, capabilities, and applications.

Angular contact ball bearings and deep groove ball bearings

Design Differences

Contact Angle:

Angular Contact Ball Bearings: These bearings have a contact angle, typically between 15° and 40°. The contact angle allows them to support significant axial loads in one direction.

Deep Groove Ball Bearings: These bearings have a very small or zero contact angle, which enables them to support moderate axial loads in both directions along with radial loads.

Raceway Design:

Angular Contact Ball Bearings: The raceways of the inner and outer rings are offset from each other, which creates the contact angle.

Deep Groove Ball Bearings: The raceways are designed with deep grooves that enable the bearing to support radial loads and moderate axial loads.

Load Handling Capacity:

Angular Contact Ball Bearings: Can handle higher axial loads in one direction due to the contact angle. They can also handle combined loads (radial and axial) but are less efficient in handling purely radial loads compared to deep groove bearings.

Deep Groove Ball Bearings: Primarily designed to handle radial loads but can also accommodate moderate axial loads in both directions due to the deep grooves.

Performance Differences

Axial Load Capacity:

Angular Contact Ball Bearings: Superior in handling axial loads in one direction due to the contact angle.

Deep Groove Ball Bearings: Can handle axial loads in both directions, but the capacity is typically lower compared to angular contact bearings.

Radial Load Capacity:

Angular Contact Ball Bearings: Less efficient in handling purely radial loads compared to deep groove bearings.

Deep Groove Ball Bearings: Highly efficient in handling radial loads due to the deep groove design.

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For more detailed information on the differences between angular contact ball bearings and deep groove ball bearings, please click here: https://www.lkwebearing.com/news-center/angular-contact-ball-bearings-and-deep-groove-ball-bearings.html

Steel office desks are an integral part of modern office furniture, known for their durability, strength, and sleek appearance. They are designed to meet the demands of various work environments, from corporate offices to industrial settings. This article delves into the technical aspects of steel office desks, covering their material properties, construction methods, ergonomic considerations, and maintenance requirements.

Material Properties

Steel Composition

Steel used in office desks typically consists of iron alloyed with carbon and other elements to enhance its strength and durability. The common types of steel used include:

Carbon Steel: Contains carbon as the main alloying element. It is robust and cost-effective, suitable for most office applications.

Stainless Steel: Contains chromium, which provides corrosion resistance. It is ideal for environments where the desk might be exposed to moisture or chemicals.

Galvanized Steel: Coated with a layer of zinc to prevent rusting. This type is particularly useful in industrial settings.

Mechanical Properties

Steel desks are chosen for their superior mechanical properties, including:

Tensile Strength: Steel has a high tensile strength, making it capable of withstanding heavy loads without deforming.

Durability: The material is resistant to wear and tear, ensuring a long lifespan even under constant use.

Flexibility: Despite its strength, steel can be formed into various shapes, allowing for versatile desk designs.

Construction Methods

Fabrication Techniques

The construction of steel office desks involves several key fabrication techniques:

Cutting: Steel sheets are cut to size using laser cutting, plasma cutting, or shearing.

Bending: Machines like press brakes are used to bend steel sheets into the desired shapes for desk components.

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For more detailed information about the technical specifications of steel desks, please click here: https://www.cydfurniture.com/en/a/news/technical-specifications-and-considerations.html

A circular vibrating screen operates using a motor to drive an eccentric shaft, which creates a circular motion of the screen. This motion causes the materials on the screen to move in a circular path, facilitating the separation of particles based on size. Here is a step-by-step explanation of how a circular vibrating screen works.

Working principle of circular vibrating screen

Motor and Eccentric Shaft: The operation begins with an electric motor that drives an eccentric shaft. This shaft is not centered, meaning its axis of rotation is offset. As the motor rotates the shaft, the eccentric design causes the shaft to move in a circular motion.

Screen Frame: Attached to the eccentric shaft is a screen frame that holds one or multiple screening surfaces or meshes. As the eccentric shaft rotates, it imparts a circular motion to the screen frame.

Vibration: The circular motion generated by the eccentric shaft creates vibrations in the screen frame. These vibrations are transmitted through the screen surface.

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For more detailed information about the working principle of circular vibrating screen, please click to visit: https://www.zexciter.com/en/a/news/working-principle-of-circular-vibrating-screen.html

Crushers are machines used to reduce the size of rocks, gravel, or other materials in aggregate processing, construction, and mining. Here are the main types of crushers, along with a brief description of each:

Crushers types

1. Jaw Crushers

Jaw crushers use a pair of vertical jaws, one stationary and the other moving, to crush materials. The material is fed into the top of the jaws and is compressed as the movable jaw moves towards the stationary jaw, crushing it into smaller pieces. Jaw crushers are commonly used for primary crushing.

2. Gyratory Crushers

Gyratory crushers consist of a concave surface and a conical head; both surfaces are typically lined with manganese steel. The inner cone is slightly eccentric, which allows the gap between it and the concave to change, crushing the material. They are used for primary or secondary crushing of large volumes of hard materials.

3. Cone Crushers

Cone crushers are similar to gyratory crushers in that they use a mantle that gyrates within a concave bowl. Unlike gyratory crushers, cone crushers are more often used in secondary, tertiary, and quaternary crushing stages. The material is crushed by compression between the mantle and the bowl liner.

4. Impact Crushers

Impact crushers utilize the impact principle. They come in two main types:

Horizontal Shaft Impact (HSI) Crushers: These use hammers or blow bars attached to a horizontal rotor to crush the material as it strikes a stationary anvil or breaker plates.

Vertical Shaft Impact (VSI) Crushers: These use a high-speed rotor to project material against a wear-resistant anvil or rock shelf, breaking the material along its natural fissures.

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More detailed information about crusher types can be accessed by clicking here: https://www.zymining.com/en/a/news/crushers-types.html

Mobile aisle shelving systems are an efficient storage solution that are widely used in libraries, archives, warehouses, museums and other fields. This system maximizes space utilization and significantly increases storage density by introducing movable rails and shelving units onto traditional shelving. This article will detail how mobile aisle shelving systems work, their structural components, installation methods, and their benefits.

Working principle

The core concept of a mobile aisle shelving system is to mount multiple shelving units on movable tracks. By manual or motorized means, users can move these shelving units, creating a temporary passage to access desired storage items. In this way, the system only opens channels when needed, thereby converting the space originally used for fixed channels into storage space and improving storage efficiency.

Structural components

The mobile channel shelving system mainly consists of the following parts:

Track System: Tracks are the foundation of a mobile aisle shelving system and are typically made from high-strength steel. Tracks are installed on the floor to ensure smooth movement of the shelving unit. The design of the track needs to consider the flatness and load-bearing capacity of the ground.

Shelving Unit: A shelving unit is the actual structure for storing items and consists of multiple layers of adjustable shelves and brackets. Shelving unit sizes and materials vary depending on storage needs and environmental conditions.

Drive System:

Manual drive: Uses handles or wheels to push the shelving unit forward. Manual systems are generally suitable for smaller-scale applications.

Electric Drive: Equipped with an electric motor to control the movement of the shelving unit via buttons or touch screen. Motorized systems are suitable for storage environments that require frequent access and larger volumes.

Safety system: including anti-tilting devices, infrared sensors and emergency stop buttons to ensure the safety of people and items during movement.

Installation method

The installation of a mobile aisle shelving system requires professional skills and precise measurements. The main steps are as follows:

Ground preparation: Make sure the ground is flat and has sufficient load-bearing capacity. Perform ground reinforcement or adjustments if necessary.

Install the track: According to the design drawings, accurately position and fix the track. Make sure the tracks are parallel and level to allow for smooth movement of the shelving unit.

Assemble Shelving Units: Assemble shelving units as needed, adjusting shelf heights to accommodate different sized storage items.

Install drive systems and safety devices: Install manual or electric drive systems, set safety devices, and perform testing and commissioning.

System debugging: After installation is complete, conduct a comprehensive test of the entire system to ensure that the shelving units move smoothly and safety devices are working properly.

Advantage

Mobile aisle shelving systems offer the following significant benefits:

High space utilization: By reducing the number of fixed channels, the storage density is greatly increased and the space utilization efficiency is improved.

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For more detailed information about the introduction of mobile aisle shelving system, please click here: https://www.etegreen.com/en/a/news/introduction-to-mobile-aisle-shelving-system.html