Rolling Mill Bearings
Backing Bearing
Specialized multi-row bearings for Sendzimir cluster mills and other multi-roll cold rolling mill configurations.
Technical Overview
Backing Bearings (also called backup bearings, or Sendzimir mill bearings in cluster-mill specs) are precision multi-row bearings specifically designed for cluster-type cold rolling mills. These bearings support the intermediate and backup rolls in Sendzimir 20-high mills and similar multi-roll configurations used for rolling thin-gauge stainless steel, silicon steel, and other specialty metal strips. ANDE backing bearings feature precision-ground raceways, optimized roller geometry, and tight dimensional tolerances to ensure uniform strip thickness and surface quality during high-precision cold rolling operations.
Key Features
Technical Specifications
Why use backing bearings in compact multi-roll support positions?
Backing bearings are selected where the mill arrangement needs compact support, high stiffness, and stable running geometry. In these positions, dimensional consistency and contact behavior have a direct effect on process stability and product quality.
Material and inspection focus
- Material route reviewed around contact fatigue resistance and service life
- Precision grade and dimensional consistency checked for the support arrangement
- Raceway geometry, surface finish, and radial runout reviewed before assembly
Replacement review note
For replacement projects, the existing drawing and support layout should be reviewed before interchangeability is confirmed.
Applications
Frequently Asked Questions
Q1What is a backing bearing and where is it used?
A backing bearing (also called a Sendzimir mill bearing) is a multi-row cylindrical roller bearing designed specifically for cluster-type cold rolling mills. It supports the intermediate and backup rolls in Sendzimir 20-high mills used for rolling thin-gauge stainless steel, silicon steel, and specialty alloy strips.
Q2Can ANDE backing bearings replace SKF or Timken equivalents?
Yes. ANDE backing bearings are manufactured to be dimensionally interchangeable with major international brands including SKF, Timken, and NSK. We provide cross-reference tables and can match your existing bearing specifications exactly.
Q3What materials are used in ANDE backing bearings?
Our backing bearings use high-carbon chrome bearing steel with carburized heat treatment for the raceways and rollers. This provides excellent surface hardness (HRC 58-62) while maintaining core toughness for impact resistance during cold rolling operations.
Q4What is the typical service life of a backing bearing?
Service life depends on operating conditions, but with proper lubrication and maintenance, ANDE backing bearings typically achieve 12-18 months of continuous operation in Sendzimir mills. Factors affecting life include rolling speed, strip material hardness, and lubrication quality.
Related Products
Four-Row Cylindrical Roller Bearing
Four-row cylindrical roller bearings for rolling mill work rolls and backup rolls — maximum radial load capacity for hot strip mills, plate mills, and section mills. Factory direct from ANDE bearing manufacturer.
Four-Row Tapered Roller Bearing
Four-row tapered roller bearings for rolling mill applications — combined radial and axial load support for work roll and backup roll chock assemblies. Interchangeable with major brand equivalents. Factory direct from ANDE.