MR148zz UP200 Drill Bearing,8x14x4mm Bearing with No Oil for High Speed,Dental Grinding Handle Ball Bearings(Pack of 10Pcs)

• Improper bearings will cause severe fever.FUSHI has made 5000+ of attempts.the bearings of these special structure are developed.These bearings are not grease, and with improved cage.
• This is dedicated to the nail machine and grinding machine in the bearings,These devices have to be at a speed of tens of thousands of RPM,So ordinary bearings are not applicable,Special structure is required.
• Grease can play a role of lubrication and protection at slow speed.But in a moment of high speed, it will hinder,Including high temperature grease, also has no effect.
• We already have customers using UP200 and Strong102,Speed in 20000-35000rpm, no problem.
• Size:8x14x4mm With no grease.Also fits the UP200 UG12, UG14, SUG12 handpieces.

And taking into account the special structure of the bearing, We recommend a three-month replacement. TECHNICAL SPECS Type: Nail Bearing Series Structure: Deep Groove Material: 52100 Chrome Steel Closures: Metal Shielded(ZZ) Lubrication: ( NO GREASE ) Clearance: C0 Model: MR148ZZ Inner Size: 8 mm Outer Size: 14 mm Width Size: 4 mm Quantity: 1 Lot = 10 Pcs