BALL SCREW MANUFACTURER NSK is proud to introduce the HMC Series ball screws for machine tools, featuring higher speed operation. Higher speeds are required not only by today’s machine tools industry, but also from the machine industry as a whole. NSK addresses these demands with a higher speed of 100 m/min. Sufficient measures are taken for improved durability, achieving a threefold improvement in rigidity and doubling load capacity. To guard against thermal expansion, a hollow shaft type is available which supports forced cooling for the shaft center. Use of this type provides even greater equalized accuracy and reduced warm-up time, helping to reduce costs. Vibration and noise control features reflect consideration of ergonomic and environmental concerns. We believe the HMC Series will play a major role in advancing the machine industry into a new era. From washing machines to photocopiers, deep groove ball bearings are critical components in the workings of electrical appliances. Where specification is critical, NSK works directly with the manufacturer to develop the right bearing solution for the need. As an example, the bearing package for washing machines may utilize NSK’s special EP™ Steel bearings with EA5 grease, extending the drum bearing life by up to three times. There are two types of lubricating methods – grease and oil – for ballscrew actuator and linear guide usage. Use a lubricant agent and method most suitable to condition requirements and purpose to optimize functions of the ballscrew and linear guide. In general, lubricants with low base oil kinematic viscosity are used for high speed operation. Lubrication with high base oil kinematic viscosity is used for oscillating operations, low speed and high temperature. The noise level of the ball screws has been reduced by 6 dB, about half of what is sensed by the ear. The ballscrew subsequently produce a quieter and gentler sound. |Ball screw manufacturer|Cartesian robot|Cartesian robot|Ball bearings|