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The BSS Series realizes high-speed operation at a maximum of dN 220,000—outstanding for ball screws and far surpassing the 135,000 dN maximum performance of conventional return tube type products. For high lead ball screws, high-speed
operation at over 200m/min is also possible.
The preferred brand for virtually all the leading electric motor manufacturers, NSK ball bearings assure minimal noise and maximum life under tough operating conditions such as very high speeds and elevated temperatures. Specifically designed for electric motor applications, NSK ball bearings with special ‘CM’ clearances and reduced ‘E’ noise class facilitate smooth operation, improved efficiency and quiet operation. As evidence of our commitment to continually better our outstanding technologies, NSK offers bearings with the ‘ER’ and the ‘ERU6’ noise class, which are ideal in electric motor applications such as sleep apnea machines. Our Dent Resistant bearings offer protection against axial brinells, one of the most common sources of electric motor ball bearing damage and noise.
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.
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