Success Story

Industry: Machine Tools

Application: Main Spindle Shaft

Cost Savings: € 20 000

Introduction

A machine tool manufacturer produced 25 main spindle shafts with the wrong tolerances. As the tolerances were not correct the customer was looking for standard bearings to match his requirements. NSK analysed the complete application and proposed bearings with a special bore tolerance. After changing to the NSK Super Precision Angular Contact Ball Bearings the customer was able to utilise these defective spindle shafts.

Machine Tool Application

Super Precision Angular Contact Ball Bearing

Key Facts

Machine Tool manufacturing
Problem with matching of bearings to spindle shaft
NSK Solution: NSK proposed Super Precision Bearings Angular Contact Ball Bearings with special bore tolerances
Customer matched the bearings and the target parameters of the spindle were met
Customer did not need to recycle spindle shafts

Value Proposals

An NSK engineer analysed the complete customer machine tool application, identifying that the shaft tolerances were too small
NSK proposed to change to Super Precision Angualar Contact Ball Bearings with a special bore tolerances

Product Features

Optimum design - achieved by computer simulation of temperature rise resulting from ball skid
Long life - Range of material specification including high quality ultra clean steel, extra pure and advanced material SHX patented by NSK
High accuracy - Rolling elements with P2 series available in standard steel and ceramic material
Low Noise - Quieter running high-speed spindle featuring Spinshot II lubrication system
Extension range of cage material options, available in high speed design including - brass, engineered polymer and phenolic
Optional seals available within the standard ISO envelope
High rotational speed
Minimum friction and heat generation
Controlled rigidity

Product Sheet >>