Super Precision Cylindrical Roller Bearings
Overview
NMT super precision cylindrical roller bearings are designed specifically to handle large radial loads in high-speed spindle applications that require high running accuracy.
Lineup Highlights
- Standard bearings that conform to ISO standards and specialized series for machine tools.
- Double-row cylindrical roller bearings with high rigidity and single-row options for high speeds.
- A range of NMTROBUST™ high-performance bearings for both high rigidity and ultra-high speeds.
Product List
New materials and a new design enhance machine tool performance.
Features
- High speeds/low heat generation
An optimized design increases supported speeds and decreases heat generation. - Long life
Grease lubrication extends service life. - Stable rotation
A highly rigid PPS resin cage restricts deformation due to centrifugal force and keeps rotation stable at high speeds.
NMT's standard single-row cylindrical roller bearings conform to ISO standards.
Features
- Long-life materials
NMT's Z steel, a long-life bearing steel, is used as a standard material. - High rigidity
High-rigidity types use a roller-guiding machined brass cage.
NMTROBUST bearings feature a highly heat-resistant PEEK cage and heat/wear-resistant SHX steel to achieve a dmN value of 2.2 million.
Features
- Low heat generation
An optimized design achieves low heat generation. - High seizure resistance
SHX steel significantly improves seizure resistance. - Optimized materials for high speeds
Heat-resistant, highly rigid PEEK resin material realizes impressive high-speed performance.
FAQs
Loads are defined by their direction. Loads perpendicular to the shaft are called radial loads and loads parallel to the shaft are called axial (thrust) loads.
While DGBBs can handle axial loads in both directions, single-row angular contact ball bearings can only receive axial load in one direction.
Seals and shields offer additional protection for bearing components and help to improve and maintain lubrication. In terms of sealing performance, sealed bearings rank best, followed by shielded bearings, then finally open bearings. NMT uses supplementary designations D, DU, DW, and V (DD, DDU, DDW, VV) for sealed bearings and Z (ZZ) for shielded bearings. No supplementary designations are listed for open bearings.
