Bearings for Swiveling Spindle Heads in Machine Tools
Overview
NMT provides angular contact ball bearings specially designed for machine tool swivel heads. These bearings match the high-precision processing needed in multi-spindle configurations. In particular, our ROBUSTSLIM high-accuracy low-profile angular contact ball bearings offer high rigidity with low torque.
Features
- High running accuracy and low torque rotation made posible with ball bearings
- High moment stiffness on par with crossed roller bearings
- Specialized design more compact than standard bearings
Product List
ROBUSTSLIM angular contact ball bearings are designed to meet the needs of machine tool swivel heads.
These bearings achieve the high running accuracy characteristic of ball bearings alongside high moment rigidity on par with crossed roller bearings.
Features
- High running accuracy
ROBUSTSLIM bearings achieve a rotational runout under 0.5 μm. - High moment rigidity
These ball bearings provide the same high level of moment rigidity as crossed-roller bearings. - Compact
A specialized design reduces width dimensions by over 35% compared to standard ball bearings.
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.
