Product Name:
small ball bearing
Model Name:
639
the drawing of
the small ball bearing 639
original factory pictures
our prodcuts are choice to high grade chrome steel,high precision ball,low radiation cage,good airproof seal and shield.so our prodcuts are waidly used for industrial machinery with both of high quality and cheap price
the small ball bearing 639 of ring:
theoutsaid and insaid ring `s material is hgih grade chrome steel or stainless steel, the Hardness HRC within 60-64,the surface is shining.the size D30*d9*W10 mm. we can provide 639RS ,639 ZZ .639ZZNR.639 Z. 639 2RSNR
the ball bearing 639 of ball:
the ball is choice by high grade chrome CGr15,the precision is accord with ISO 32900:2001, the work life is long.
the ball bearing 639 of cage
the cage used by pressed steel.the nail and surface of cage is cementite,the cage is low friction for long life and strong. we also can provied the noly cage
the ball bearing 639 of seal and shield:
the seal material is NBR+SPCC for Double Sealed 2RS, the shield material is SPCC for Duoble Shielded ZZ,we can according for customer require choice to NON-CONTACTED/LIGHT CONTACTED/HEAVY CONTACTED for seal type AND color.
the ball bearing 639of lubrication:
we can according for customer require choice to SHELL / MOBIL / KYODO / KLUBER / EXXON / HTHS grease
the small ball bearing of Radial Play/Cleareence are C0/C2/C3/C4/C5;The tolerances are accord with ABEC1.ABEC3 ABEC5.ABEC7.