Super precision angular contact ball bearing for high capacity
ID : 7 - 140 mm | 72 D design
SKF
SKF super-precision single row angular contact ball bearings in the 72 .. D series are designed to accommodate heavy loads at relatively high speeds under low to moderate operating temperatures. Bearings in the 72 series are more robust and have the largest cross section for a given bore diameter, compared to bearings in the 718, 719 and 70 series. These bearings provide high reliability and superior accuracy for applications such as Parallel Kinematic Machines (PKM), lathe spindles, grinding and boring machines, high-speed dynamometers and turbochargers.
The extended range includes shaft diameters from 7 to 140 mm. Bearings with a bore diameter ranging from 10 to 80 mm can be supplied with an integral seal fitted on both sides and filled with premium grease.
To accommodate the diverse operating requirements of precision applications, bearings in the 72 .. D series are manufactured to two tolerance classes (P4A and PA9A) and with two contact angles (15° and 25°). Those suitable for universal matching or mounting in sets are produced to four preload classes, to meet almost all application requirements in terms of speed and rigidity: class A (extra light preload), class B (light preload), class C (moderate preload), class D (heavy preload).
The bearings have an outer ring shoulder-guided cage made of carbon fibre reinforced polyetheretherketone (PEEK) for sizes between 12 mm up to 65 mm bore to accommodate extended operating temperatures or made of fabric reinforced phenolic resin for all other sizes.
The extended range includes shaft diameters from 7 to 140 mm. Bearings with a bore diameter ranging from 10 to 80 mm can be supplied with an integral seal fitted on both sides and filled with premium grease.
To accommodate the diverse operating requirements of precision applications, bearings in the 72 .. D series are manufactured to two tolerance classes (P4A and PA9A) and with two contact angles (15° and 25°). Those suitable for universal matching or mounting in sets are produced to four preload classes, to meet almost all application requirements in terms of speed and rigidity: class A (extra light preload), class B (light preload), class C (moderate preload), class D (heavy preload).
The bearings have an outer ring shoulder-guided cage made of carbon fibre reinforced polyetheretherketone (PEEK) for sizes between 12 mm up to 65 mm bore to accommodate extended operating temperatures or made of fabric reinforced phenolic resin for all other sizes.
