FZH(copper base)、FZL(Aluminum matrix)、FZP(Resin matrix)Ball retainer,Taking copper alloy,duralumin alloy and POM resin as the matrix,and on the outer circle surface, the new special cavities with proper arrangement and size are machined, and the rolling bearing steel balls are inserted in the cavities。 By adopting the latest groove circle lock ball technology, the problem that the traditional lock ball can not completely prevent the steel ball from falling off is effectively solved。 A 90 ° stop is machined at the bottom of the hole to make the steel ball rotate freely in the hole without falling off。 Because the diameter of the ball is larger than the wall thickness of the retainer ring, Therefore, the steel ball is higher than the retaining ring in use、 Cylindrical surface, Direct contact with matching hole and shaft, Float the base (holding ring) in the middle, And the difference between the matching hole and the shaft radius is smaller than the ball diameter, That is to say, the fit of steel ball with it is interference fit, High matching accuracy, Flexible relative movement of shaft and hole。 It's a new generation of products that keep the circle。
Fu powder metallurgy oil bearing is made of metal powder, pressed by mould, sintered at high temperature and shaped。 It has fine and evenly distributed pores and forms oil - bearing state after vacuum impregnation of lubricating oil。 The product has the characteristics of short - term non oiling, low cost, high accuracy of internal and external diameter dimensions。 According to different materials, it can be divided into the following three types: fu-1 copper base oil bearing, fu-2 iron base oil bearing, fu-3 copper iron mixed base oil bearing。