NU312 ECM/C3VL0241 Ceramic Coated Bearings

NU312 ECM/C3VL0241

-- Dimension: 60*130*31mm

-- Weight: 2.2kg

-- Type: Cylindrical roller bearings,Single Row

-- Feature: Outer ring with Ceramic coating design

-- C3: Internal clearance greater than Normal

World TOP QUALITY NU 312 ECM/C3VL0241 Electrically Insulated Bearings

d	60 mm	Bore diameter
D	130 mm	Outside diameter
B	31 mm	Width
D1	≈110 mm	Shoulder diameter outer ring
F	77 mm	Raceway diameter inner ring
s	max.2.1 mm	Permissible axial displacement from the normal position of one bearing ring relative to the other

Single Row Cylindrical roller bearing NU 312 ECM/C3VL0241 is one kind of Current Insulated bearings, it consist of Inner Ring with Coated, or outer ring with coating, brass or nylon, Brass cage and steel rollers, the cylindrical roller and raceway of the rings are line contact, so cylindrical roller bearings are the same with spherical roller bearing, tapered roller bearing, thrust roller bearing and the other kinds of roller bearings, they all have larger load capacity than ball bearings, cylindrical roller bearing mainly carry radial load, Small friction between the rollers and the ribs of the rings make the cylindrical roller bearings are suitable for the application which are high speed rotation.

The effects of stray electric current Electric current passing through the bearing can cause micro-cratering on the raceways of the inner and outer rings and on the rolling element surfaces. Heat generated by the electrical discharges causes local melting that creates micro craters and changes in the structure of the metal, which can be recognized as a dull grey discoloration of the raceways. If such a bearing continuous to be operated, further a wash boarding pattern may develop as a secondary damage.

Local high temperatures cause the additives in the lubricant to char or burn the base oil. This causes the additives to be consumed more quickly. In the case of grease lubrication, the grease turns black and hard. This signiicantly shortens grease life, leading to shorter bearing service life.

Product Features of NU 312 ECM/C3VL0241 Bearings

1. High insulation properties

To prevent electric corrosion in bearings, a highly productive aluminum ceramic coating material is used to coat the outer ring, and by combining optimized additives, insulation performance is improved by about tenfold.

2. Improved durability

· Optimizing bearing elements improves film impact resistance by a factor of 3x.

· Optimized ceramic coating materials makes for excellent heat dissipation.

Advantages of Electrically Insulated Bearings

·Higher operational reliability through optimum protection against electrical corrosion

·More economic than, for example, insulation on housings or shafts

·Interchangeable: Same key dimensions and technical properties as conventional bearings

·Coating resistant to damage if correctly handled

High-quality coating

A plasma spray technique is used to apply the aluminum oxide layer. Sophisticated

pre- and post- application processes result in an outstanding coating quality.

Protective sealant

TKW  bearings are treated with a unique sealant to guard against humidity penetrating the coating and reducing its effectiveness.

Optimized solutions

TKW can supply values for relevant electric parameters for the bearings (capacitance, impedance) to optimize the insulating solution for any application.