1. It has rolling sealed bearing structure. The cylinder rolling element is placed within the groove of roller cone, thus enlarging the journal size and ensuring a better performance of roller bit. 2. The secondary surface of thrust bearing of roller bit has been handled with antifriction and hardening treatment so as to decrease the frictional force of bit for protecting its hardening resistance. 3. The roller bit uses new type lubricating grease which can bear the high temperature of 250ºC and boasts abrasion resistance.
plywood case packing
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|Business Type:||Ironware, Ironmongery & Related Items|
|Company :||Hejian Fanglei Drill Equipment|
|Address :||Junziguan Zone|