QS3/4L12

description

• The shaft on which Thomson Ball Bushing® and Thomson Roundway® bearings act as the inner bearing race.

features

• The hardness is Rockwell of 60C minimum for excellent wear resistance
• A carefully ground finish of 8Ra or better for a super smooth bearing surface that reduces friction and wear
• Shafting is straight within 0.001" per foot cumulative (0.002" TIR)
• Ends are chamfered about 1/32" to 1/16" x 45°
• Complies with RoHS restrictions on the use of certain hazardous substances in electrical and electronic equipment
• Special cut-to-length shafting options available
• Centerless ground for a consistent, smooth and industry leading cataloged surface finish of 8 Ra microinch max.
• Roundness is within 0.000080” for Class L, S, D, M and 0.000050” for Class N