Steel-backed main bearings
Article Number:
1696
Description:
Steel-backed main bearings are engine bearings made with steel backing that provides the necessary strength and rigidity to support the engine crankshafts weight and movement. The steel backing is typically lined with a layer of soft, low-friction material, usually made of lead-based babbitt. The babbitt layer acts as a sacrificial material that wears slowly and evenly to maintain a consistent oil film between the bearing and the crankshaft. The oil film helps reduce friction and wear between the bearing and the crankshaft, ensuring smooth operation of the engine.Steel-backed main bearings are designed to withstand high loads and pressures generated during engine operation. They are commonly used in automotive engines, heavy-duty diesel engines, and industrial machinery. These bearings are manufactured to precise dimensional and material specifications to ensure they meet OEM (original equipment manufacturer) standards or exceed them. The steel backing of the main bearings is made of high-strength steel, typically alloyed with elements like chromium, nickel, and molybdenum for enhanced strength, durability, and corrosion resistance. The babbitt lining is applied using specialized casting techniques, which ensure uniform thickness, density, and adhesion to the steel surface. The babbitt layer is carefully machined to achieve the required tolerances, surface finish, and oil clearance.Steel-backed main bearings are available in various sizes, shapes, and configurations, to fit different crankshaft journals and engine types. They may have a full-circle or a half-circle design, depending on the engines specifications. Some main bearings also have oil grooves, oil holes, or other features that help distribute oil evenly or improve lubrication. In summary, steel-backed main bearings are an essential component of internal combustion engines that provide reliable, low-friction support to the crankshaft. Their steel backing, combined with a babbitt lining, ensures excellent load-bearing capacity, wear resistance, and oil retention characteristics, making them suitable for demanding applications.
Specifications / Technical Stats:
• HAN: 111 198 487 B
• Volkswagen emblem - Universal emblem
Scope of delivery:
• 1 x Steel-backed main bearings
