1. Why are there polyurethane wheels for casters? Polyurethane is commonly known as Youli Glue, Spring Glue, and the full name is polyurethane or isocyanate polymer. Casting polyurethane is a kind of polyurethane elastomer that is injected by chemical reaction, based on polyester polyol, diisoester and ethylene glycol. Protect the floor, absorb vibration, no trace, no staining, very abrasion-resistant, elastic and resistant. It is an elastomer between plastic and rubber, and its excellent comprehensive properties are not available in ordinary plastics and rubbers. 1. Characteristics of polyurethane wheels The elastomer of polyurethane wheels has good performances such as wear resistance, chemical resistance, high strength, high elasticity, low pressure resistance, strong shock absorption, tear resistance, radiation resistance, high load-bearing capacity and shock absorption. Polyurethane wheels also have a wide range of hardness, from Shore A10-100. There are already products on the market that surpass Shaw A100 and above. In addition, the polyurethane wheels have excellent sound absorption characteristics, and the wheels do not produce noise during the movement, which can achieve a mute effect. These characteristics of PU wheels are very suitable as caster materials. 2. Polyurethane wheels can adopt a variety of processing methods (1) Polyurethane wheels can be molded by injection, extrusion, calendering, blow molding and other processes like ordinary plastics (referring to CPU); (2) Polyurethane wheel elastomers can also be molded by plasticizing, mixing, and vulcanizing processes like general rubber (referring to MPU); (3) Polyurethane wheels can also be made into liquid rubber, which can be molded by injection molding, spraying, potting, and centrifugal molding (referring to CPU). What are the advantages of polyurethane plastics? Polyurethane plastic is widely used in casters. It is a lightweight, impact-resistant, abrasion-resistant, and corrosion-resistant thermoplastic polyurethane elastomer manufactured by a casting-type production process. Why did you choose this material? Because it has some unique characteristics: 1. Good abrasion resistance, 5-8 times that of nitrile rubber; 2. Good bending strength and elasticity; 3. Large tensile strength and elongation at break 4. Strong tear resistance; 5. Moderate temperature resistance (-50℃~85℃) up to 120℃; 6. Good oil resistance, water resistance, mildew resistance, and solvent resistance; 7. Good aging resistance 8. Large adjustable range of hardness (Shore 15A~98A); 9. Low compression set rate;
What is a caster with brake? When the caster is in a static state, the working object needs to be positioned, and the auxiliary locking component installed for the caster is the brake of the caster. The casters with brakes are the casters with brakes. The role of the caster brake The role of the caster brake refers to the auxiliary components installed in order to lock the caster (that is, the brake of the caster) when the caster is in a static state. It is worth noting that the brakes of casters generally work in a working environment with no slope. Special requirements for the design of caster brakes, please consult the manufacturer. Classification of casters with brakes Different working environment requirements have different brake designs for casters. Hanke casters designed, developed and mass-produced heavy-duty brake casters according to customer requirements.
1. First, the engineering department produces the caster design copy and passes advanced technical simulation calculations to confirm the correctness and then produce the drawings and the caster process 2. Purchasing department began to purchase caster materials 3. Purchase caster steel plate 4. Cutting 5.Start stamping caster steel plate. 6. Start surface treatment, electroplating and spraying 7. After plating, come back and start assembling. 8. Pack it. This is how casters are made.
1: Scale weight: For the "NSK" heavy-duty bearings of the same model, the material used for counterfeit heavy-duty bearings is significantly less than that of the genuine ones. Because most counterfeit heavy-duty bearings cut corners and replace high-oxidized special steel with general steel, they will be lighter than the original in terms of weight.
1. Operating procedures 1. The operator shall be allowed to operate after passing the examination and obtain the operation certificate, and shall be familiar with the performance and structure of the machine, and shall abide by the safety and shift system. 2. Inject oil (grease) strictly in accordance with the lubrication diagram, and keep the oil quantity appropriate and the oil path unblocked. 3. Check whether the equipment fasteners, especially the pins of the tilting bed, are loose, whether the safety protection device is good, whether the mold is cracked, and whether the fixing is firm. 4. Rotate the flywheel by hand or use the lever to move the crankshaft, check the stroke of the punch and the gap between the molds, to prevent gnawing the mold or breaking the equipment while driving. 5. Check whether the starting mechanism and brake are sensitive, and whether the slider can be stopped immediately . 6. Before starting the motor of the flying caster press, the clutch must be disengaged. Start the motor and wait for the speed of the flywheel to be normal before operating the slider. 7. When installing the mold, the slider must be placed to the bottom dead center, so that the closing height of the mold is less than the minimum closing height of the flying caster press. 8. Strictly press the pressure determined by the slider's allowable pressure curve to process, and overload work is not allowed. 9. When working, always pay attention to whether the clutch and brake mechanism are normal; whether the fasteners, especially the connecting rod nut and the pin nut of the tilting bed, are loose; whether the upper and lower chess positions are changed. Stop immediately if the problem is found. 10. It is forbidden to punch more than two sheets at the same time. 11.After finishing once, hands or feet must leave the buttons or pedals. When more than two people operate, pay attention to coordination and use double-action switches if necessary. 12. When using the self-checking infrared photoelectric controller safety protection device, always check its reliability. 13. It is found that abnormal noise, continuous hitting of the slider, and stamping parts biting on the mold, etc., should be stopped immediately for inspection. 14. Workpieces, tools and sundries are not allowed to be placed on the workbench. 15. When adjusting the inclination angle of the flying caster press, use hoisting machinery to ensure safety, and pin the bed after the adjustment. 16. After work, the equipment must be checked and cleaned, and daily maintenance work must be done. Place the control handles (switches) in neutral (zero position) and disconnect the power switch to achieve neatness, cleanliness, lubrication and safety.