Manual Transmission
Overview
Manual transmissions must adequately meet driver expectations of control by conveying a smooth, precise, and crisp feeling. Transmissions must also be compact, lightweight, and be able to deliver excellent fuel efficiency for the increased number of gears that are appearing in newer vehicles. The bearings and synchronized parts created by NMT play a key role in supporting the future of manual transmissions with their unsurpassed reliability and capability developed with tribology technology.
Product List
Long life has been achieved by specially designed seals for transmissions. The seals prevent ingress of contaminants in the oil. Size reductions from standard open type bearings can be achieved.
High capacity cylindrical roller bearings for radial load, as well as axial load from gear meshing.
Superior roller stability after assembling the cup and the cone achieves quick and high precision preload setting. The set preload is maintained at higher levels for longer periods.
Smooth rotation and sliding have been achieved in a compact size.
Reduced weight and costs have been achieved by using of plastic cages with superior oil and heat resistance.
Best for preventing fretting generated at the time of non-relative rotation between gear and shaft.
Self-centering clutch release bearings with reduced weight and costs have been achieved by reducing the number of parts combined with press technology.
Reduced costs have been achieved by using original material that allows for press forming and through hardening. Superior friction characteristics from precision taper surface processing technology contribute to smoother shifting.
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.
