May 30,2022

What are the bearings of casters and how to choose them correctly?

Regarding how to choose a caster, I believe you already know how to select one, so a good caster is inseparable from its bearings. We all know that the use of casters cannot be separated from the assistance of bearings. The caster bearings should be suitable for their application while also leaving enough safety margin. So how do we choose these caster bearings? Below, the host Xiaoban will teach you how to select them.

May 19,2022

How are swivel casters fixed onto aluminum profiles?

Swivel casters can also be referred to as universal band brake casters. They can not only move but also be fixed in a certain place. The specifications of swivel casters include 15-inch flat brake, 2-inch flat brake, 25-inch flat brake, 3-inch flat brake, 4-inch flat brake, and 5-inch flat brake.

May 19,2022

Precautions for Installing Casters

  1. Match according to needs. Usually, it is a combination of 2 directional casters and 2 swivel casters, following the pairing teaching methods listed above. However, there are also combinations with more than four casters, which require students to meet the demands of businesses for more convenience and flexible control.

May 19,2022

Characteristics of Rubber Wheels

  (1) When rubber products are formed, the cohesion of the elastomer cannot be eliminated after high-pressure suppression. When the rubber product is separated from the mold, the shrinkage of the elastomer is very unstable (the shrinkage of rubber wheels varies depending on the type of rubber). The elastomer needs some time to gradually stabilize. Therefore, when designing rubber wheels, both the formulation and the mold should be carefully calculated for fit. Otherwise, the product dimensions will be unstable, leading to poor product quality.

May 19,2022

Tips for Choosing PU Wheels and Rubber Wheels

  1. The weight supported by the wheels should be greater than the weight at the time of purchase to extend the lifespan of the wheels.

May 20,2019

Caster accessories

1. Double brake: A braking device that can lock the steering and also fix the wheel's rotation. 2. Side brake: A braking device installed on the wheel axle sleeve or tire surface, operated by foot, that only fixes the wheel's rotation. 3. Steering lock: A device that locks the steering bearing or turntable using a rebound spring pin, allowing a movable caster to be locked into a fixed caster, enabling multiple uses for one wheel. 4. Dust ring: Installed above and below the support turntable to prevent dust from entering the steering bearing, maintaining its lubrication for smooth rotation. 5. Dust cover: Installed at both ends of the wheel or axle sleeve to prevent dust from entering the single wheel bearing, maintaining its lubrication for smooth rotation. 6. Anti-tangle cover: Installed at both ends of the wheel or axle sleeve and on the support fork legs to prevent other materials or fine threads, ropes, etc., from tangling in the gap between the support and the wheel, ensuring the wheel can rotate freely. 7. Support frame: A device installed on the bottom of the transport equipment that allows it to be fixed in a certain position. 8. Others: Includes specific purpose components such as steering arms, levers, and anti-loosening pads.

May 20,2019

Single round selection

Single Wheel Selection: There are many types of industrial casters, with different options available based on size, model, tire surface, and various usage environments and requirements. 1. Determine the wheel diameter: This is usually based on the load capacity and installation height requirements. The larger the wheel diameter, the easier it is to push, and the greater the load capacity; it also better protects the ground from damage. 2. Choose the wheel material: First, consider the size of the surface being used, obstacles, residual materials on the site (such as metal shavings, grease), environmental conditions (such as high temperature, normal temperature, or low temperature), and the weight the wheel can carry to decide on the appropriate hardness of the wheel material. For use on rough or contaminated surfaces, it is advisable to select durable nylon wheels or cast iron wheels; for smooth and clean surfaces, choose quiet, elastic rubber wheels, polyurethane wheels, inflatable wheels, or synthetic rubber wheels; for special high or low-temperature work environments, or where there are significant temperature differences, metal wheels or specially designed high-temperature wheels should be selected; in areas where static electricity needs to be prevented, it is best to use specialized anti-static wheels, or metal wheels (if ground protection is not required); in environments with a lot of corrosive substances, wheels with good corrosion resistance and stainless steel brackets should be chosen accordingly. Inflatable wheels are also suitable for light loads and uneven soft surfaces.

May 20,2019

How to choose the right caster wheels

How to choose the right caster wheels 1. Choose according to the usage environment: a. When selecting suitable wheel frames, the first consideration is the weight that the caster can bear. In places like supermarkets, schools, hospitals, office buildings, and hotels, where the floors are good, smooth, and the goods being transported are relatively light (each caster bearing 10-140kg), it is suitable to choose electroplated wheel frames made from thin steel plates (2-4mm) that are stamped. These wheel frames are lightweight, flexible in operation, silent, and aesthetically pleasing. The electroplated wheel frames are divided into double-row and single-row balls based on the arrangement of the balls. If frequent movement or transportation is required, double-row balls should be used. b. In factories and warehouses, where goods are frequently moved and the load is heavier (each caster bearing 280-420kg), it is suitable to use double-row ball wheel frames made from thick steel plates (5-6mm) that are stamped and welded. c. For transporting heavy items in places like textile factories, automotive factories, and machinery factories, where the load is heavy and the walking distance within the factory is long (each caster bearing 350-1200kg), it is necessary to choose wheel frames made from thick steel plates (8-12mm) that are cut and welded. The active wheel frames use flat ball bearings and ball bearings on the base plate, allowing the casters to bear heavy loads, rotate flexibly, and resist impacts. Industrial casters can be made from high-grade imported reinforced nylon (PA6), super polyurethane, or rubber, providing high impact resistance and strength. The metal components of the bracket are made from high-quality steel plates that have been galvanized or spray-coated for corrosion resistance, with precision ball bearings installed inside the casters. Medical casters should be selected based on hospital requirements, featuring lightweight operation, flexible steering, high elasticity, special ultra-quiet, wear resistance, anti-tangling, and chemical corrosion resistance. 2. Choose according to load capacity: The load capacity of the caster is the most basic and critical requirement, and the actual usage scenarios vary widely. Therefore, when selecting the load capacity of the caster, a certain safety margin should be left. Taking the commonly used four-wheel installation as an example, the following two methods can be used for selection: a. Choose based on three casters bearing the total weight. One caster is suspended. This method is suitable for situations where the casters bear significant impact during the loading or moving of goods, especially when the total weight is large and the ground conditions are poor. b. Choose based on four casters bearing 120% of the total weight. This method is suitable for situations where the ground conditions are good, and the casters bear less impact during the loading or moving of goods. c. Calculate the load capacity: To calculate the required load capacity of the caster, it is necessary to know the self-weight of the transport equipment, the maximum load, and the number of single wheels and casters used. The required load capacity for a single wheel or caster is calculated as follows: T=(E+Z)/M×N---T=required load capacity for a single wheel or caster;---E=self-weight of the transport equipment;---Z=maximum load;---M=number of single wheels and casters used;---N=safety factor (approximately 1.3—1.5). It should be particularly noted that for those casters that will experience significant impacts, not only should casters with high load capacity be selected, but also specially designed impact-resistant structures should be chosen. If brakes are necessary, casters with single or double brakes should be selected. 3. Flexibility of rotation: The larger the single wheel, the easier it is to rotate. Roller bearings can bear heavier loads, but the resistance during rotation is greater. Single wheels equipped with high-quality (bearing steel) ball bearings can bear heavier loads and rotate more easily, flexibly, and quietly. 4. Temperature conditions: Extreme cold and high temperatures have a significant impact on casters. Polyurethane wheels can rotate flexibly at low temperatures of -45°C, while high-temperature wheels can rotate easily at high temperatures of 230°C.

May 20,2019

Single wheel material

There are various materials for manufacturing single wheels, the most common materials are: nylon, polypropylene, polyurethane, rubber, cast iron, etc. 1. Polypropylene wheel, commonly known as PP wheel. Polypropylene is a thermoplastic material known for its impact resistance, corrosion resistance, abrasion resistance, non-marking, non-staining, and non-toxic properties. It is an odorless, moisture-resistant material. Polypropylene can resist many corrosive substances and does not contain strong oxidizers or hydrogen halides. The applicable temperature range is -20°C to +60°C, but the load-bearing capacity decreases when the ambient temperature exceeds +30°C. 2. Nylon wheel. Nylon is a thermoplastic plastic. It is impact-resistant, non-marking, non-staining, corrosion-resistant, highly abrasion-resistant, and odorless. It is hygienic and resistant to many corrosive substances, but not resistant to mineral acids, oxidizers, chlorinated hydrocarbons, and heavy metal salt solutions. Its rolling resistance is very low, making it suitable for use on rough or contaminated surfaces. The color is natural white or black. Its performance improves after fully absorbing moisture. The applicable temperature range for nylon is -45°C to +130°C, with short-term use allowed at higher temperatures. However, the load-bearing capacity decreases in environments above +35°C. 3. Polyurethane wheel. Polyurethane (TPU) is a thermoplastic polyurethane. It uses polypropylene or nylon as the wheel core, with polyurethane injection molded on the outer edge of the wheel core to form the wheel surface. It has excellent properties such as protecting the floor, absorbing vibrations, being non-marking, non-staining, elastic, abrasion-resistant, and resistant to many corrosive substances; it can also withstand hot water and steam under specific conditions. Its rolling resistance is low, making it suitable for use on various surfaces. The color can be customized. The applicable temperature range for thermoplastic polyurethane single wheels is -45°C to +90°C, with reduced load-bearing capacity in environments above +35°C. The hardness is generally 92°±3°, 94°±3°, or 98°±2° Shore A. 4. Cast polyurethane (CPU) elastomer wheel. Cast polyurethane elastomer (CPU) is a thermosetting polyurethane elastomer formed through a chemical reaction, based on polyester polyols, diisocyanates, and ethylene glycol. It uses iron or aluminum cores as the wheel core, with polyurethane cast on the outer edge of the wheel core, forming the wheel surface through high-temperature curing. This wheel is very protective of the floor, absorbs vibrations, is non-marking, non-staining, has excellent abrasion resistance, good elasticity, and is resistant to many corrosive substances, as well as UV resistant, but not resistant to hot water, steam, humid air, and aromatic solvents. Additionally, it has very high operational comfort, low rolling resistance, and generates little heat under dynamic loads. The color is white. The applicable temperature range for cast polyurethane wheels is -30°C to +70°C, with a short-term maximum of +90°C. The best rigidity is at temperatures below -10°C. The hardness is 75°+5° Shore A. 5. Cast polyurethane (CPU) wheel. Cast polyurethane (CPU) is a thermosetting polyurethane elastomer formed through a chemical reaction, based on polyester polyols, diisocyanates, and ethylene glycol. It protects the floor, is non-marking, non-staining, highly abrasion-resistant, elastic, and resistant to many corrosive substances, as well as UV resistant. Additionally, it has very low permanent deformation, low rolling resistance, generates little heat under dynamic loads, and has hydrolysis resistance, making it particularly suitable for higher speeds up to 16 km/h. The color can be customized. The applicable temperature range for cast polyurethane wheels is -45°C to +90°C, with a short-term maximum of +90°C. 6. Cast nylon (MC) wheel. Cast nylon (MC) is a thermosetting plastic formed through a chemical reaction. It is impact-resistant, non-marking, non-staining, corrosion-resistant, highly abrasion-resistant, and odorless. It is hygienic and resistant to many corrosive substances, but not resistant to mineral acids, oxidizers, chlorinated hydrocarbons, and heavy metal salt solutions. In terms of load-bearing capacity, tensile strength, elasticity, deformation stability, and moisture absorption, cast nylon (MC) performs better than injection-molded nylon. Its rolling resistance is very low. The color is natural. The applicable temperature range for cast nylon (MC) is -45°C to +130°C, with short-term use allowed at higher temperatures. The load-bearing capacity decreases in environments above +35°C. 7. Foam polyurethane (PUE) wheel. Foam polyurethane (PUE), also known as microporous polyurethane, is a block polymer. Foam polyurethane wheels are highly elastic wheels with physical properties that exceed all other microporous elastomers of the same density. They have low density, lightweight, easy to deform, easy to mold, impact-resistant, good sound absorption and energy absorption, high load-bearing capacity, high elasticity, good fold resistance, low pressure resistance, wear resistance, tear resistance, radiation resistance, and shock-absorbing properties. Their excellent and unique comprehensive performance is not found in ordinary plastics and rubbers. They also have a wide hardness range from Shore A 10 to 100. These characteristics make them very suitable as materials for casters. 8. Solid rubber tire. Solid rubber tires are made with iron, aluminum, steel, or plastic cores, wrapped in high-quality rubber on the outer edge of the wheel core, and formed through high-temperature vulcanization. They have excellent properties such as vibration absorption, impact resistance, high elasticity, very protective of the floor, and resistant to many corrosive substances, but not resistant to oil corrosion. The color is black, gray, or dark gray. The applicable temperature range for solid rubber tires is -45°C to +90°C. The hardness is 80°+5°/-10° Shore A. 9. Inflatable wheel. Inflatable wheels consist of inflatable tires and rubber outer tires, both made of rubber. They are particularly protective of the floor, absorb vibrations, and are resistant to many corrosive substances, but not resistant to oil corrosion. Additionally, they provide high operational comfort and very low rolling resistance in poor ground conditions. The more layers of tires, the higher the strength. The maximum tire pressure and load-bearing capacity are determined by the strength of the tire body. To ensure optimal use and achieve longevity, it is essential to strictly adhere to and regularly check the tire pressures listed in the table. Tire pressures that are too high or too low can damage or destroy the tires. The color is black. The applicable temperature range for inflatable tires is -30°C to +50°C. The size of the single wheel or tire is suitable for new tires that are not under load, with slight changes in width and diameter during operation. 10. Soft rubber wheel. Soft rubber wheels are based on a specially developed high-elasticity rubber compound. They are particularly protective of the floor, absorb vibrations, and are resistant to many corrosive substances, but not resistant to oil corrosion.