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How to calculate crane bearing pressure: Use the formula 𝑝 =𝐹/𝐴, where 𝑝 is pressure, 𝐹 is the total applied load (radial, axial, and dynamic), and 𝐴 is the effective bearing contact area. For example, if the total load is 382.5 kN and the contact area is 28,000 mm², the
Food-grade bearings must meet strict standards to ensure safety in food equipment. They are typically made from stainless steel or ceramics, produced in clean environments, and lubricated with NSF H1-approved greases. Additional requirements include FDA or EU compliance, corrosion resistance, sealed protection against contaminants, and the ability to withstand extreme
Bearing letters and numbers are industry codes that define the product’s features.
RS/RZ: Plastic seals for moisture, dust, and corrosion protection.
ZZ/2Z: Steel shields for dust protection with low friction.
C0–C5: Internal clearance, with larger numbers for high-speed or high-temperature use.
P0–P2: Precision grades, with smaller numbers for higher accuracy.
The most commonly used water pump bearings include deep groove ball bearings, angular contact ball bearings, spherical roller bearings, and thrust bearings. Each type is suited for specific pump applications based on load, speed, and environmental conditions. Choosing the correct bearing requires evaluating sealing, working conditions, and cost-performance to ensure
What are the differences between 7007 and 6007 bearings?
The main difference lies in structure and application: 7007 is an angular contact ball bearing designed for combined radial and axial loads, high-speed rotation, and precision machinery like CNC spindles. 6007 is a deep groove ball bearing mainly for radial
What do different bearing grease colors mean?
Each bearing grease color indicates specific performance traits and usage: black grease offers wear resistance under extreme pressure, red grease handles high temperatures, blue grease is waterproof for marine environments, green grease is biodegradable and used in agriculture, white grease is food-safe and
Truck wheel bearings should generally be replaced in pairs on the same axle, even if only one has failed. This ensures balanced wear, prevents future breakdowns, and minimizes repair downtime. For high-mileage or fleet vehicles, replacing all wheel bearings during scheduled service enhances long-term safety and cost-efficiency.
To determine a truck wheel bearing failure, mechanics check for abnormal noises, excessive wheel play, rough rotation, high hub temperatures, grease contamination, and bearing endplay using dial indicators. A visual inspection of the rollers and races confirms internal damage. Accurate diagnosis is essential for safety and preventing costly truck repairs.
Trucks use various types of bearings across key components to ensure durability and performance. The most common truck bearings include tapered roller bearings in the front and rear wheel hubs, cylindrical and needle roller bearings in the transmission, tapered roller bearings in the differential, and ball bearings in the driveshaft
Used ball bearings from Alibaba may appear cost-effective, but they pose serious risks due to unknown wear, lack of traceability, and unverified performance. Without documented inspection and reconditioning, these bearings are unsuitable for industrial use. A professional bearing application engineer explains why second-hand bearings rarely offer long-term value and outlines
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