Bearings #223055

Rohit Bearing proudly introduces the ultimate in low profile, high precision Rotary Bearing. We have carved a niche as one of the prominent manufacturers of Rotary Bearing. The Low-Profile Rotary Bearing is ideal for rotary positioning systems where both precision and height are critical. The various bearings sizes are only 8.5 to 12.5mm tall yet deliver radial and axial run-out from 10µm down to 1µm and wobble from 6µrad down to 2µrad. The Bearing is constructed of high quality bearing steels, PTFE filled, plastic ball cage and super precision steel balls. The specially designed raceways increase load capacity and stiffness while guaranteeing high precision, long life, and a low coefficient of friction. There are 9 standard sizes with OD's ranging from 120mm to 350mm and ID's ranging from 40mm to 250mm. Each size has different precision grades and preload classes. Additionally, for OEM applications custom sizes are available up to 500mm OD to exactly match the application. The High Precision Rotary Bearing is also very easy to apply. Most rotary bearings fit into a bore which must be very precise to avoid deforming the bearing and spoiling the precision. The Bearing includes a 0.5mm offset between the inner and outer races and counter bored holes to enable mounting directly onto flat surfaces.

Slewing Ring bearing has been developed as a new machine part in recent 30 years. It is first used in excavator and crane, and then applied to other machines. Slewing bearing is almost the same as oversize ball and roller bearing. Figure 1-1 shows double-row ball Slewing bearing's structure. Figure 1-2 shows how Slewing bearing is used in Caterpillar Crane. It connects the upper and lower parts of the machine, bearing the weight and working load of the upper part, and makes the upper slew relatively. Slewing bearing is widely used in different industries. It is suitable for hoisting machine (truck crane, tower crane, etc.), construction machinery (excavator, loading and unloading machine), transporting machine, material processing machine, Metallurgy Machinery, food processing machine, military product (tank, s anti-aircraft gun, radar, missile launcher, etc.), medical instrument research equipment, etc. Slewing bearing, like common bearing, has roller and rolling ring with raceway. But, compared with common roller bearing, it has many special features. They can be summarized in the following points: The size of Double-Row Ball Slewing Bearing is great; its diameter is generally between 0.4m10m, some even is up to 40m. Slewing bearing usually bears load from different parts. It doesn't only bear the axial force, radial force, but also tipping moment simultaneously. Therefore, a set of Slewing bearing often completes the functions of many sets of common roller bearing. The speed of Slewing bearing is fairly low, usually below 10 rmin. Moreover, on most occasions, Slewing bearing doesnt slew continually, but only slew back and force in a certain angle like the so called Swing Bearing. Slewing bearing differs greatly from roller bearing in process techniques, material and heat treatment. Generally, Slewing bearing has gear ring as driving device and Seal Device to pretend dust. Unlike the common bearing fixed on the central pivot in the bearing box, Slewing bearing has big size and is attached to upper and lower plates by bolts. Rohit Industries, a department of the Defontaine group, have designed and manufactured special bearings and slewing rings from 100 to 4500 mms diameter, with and without gear, since 1985. We have firmly positioned ourselves as one of the leading Slewing Bearing Exporters in India. 60% of our production is exported to more than 40 countries. Our engineering and design department will propose you innovating solutions, using the most modern software, as well as calculation by finite elements. The bearings and slewing rings we manufacture range in size from 10 inches to 240 inches outside diameter. They are used in construction machinery, logging machines, aerial baskets, medical equipment, military vehicles, radar antennas, and a variety of industrial equipment. In terms of both quality and delivery. Our service doesn't stop once the product ships. Being a Rohit Industries customer means that you'll enjoy the best service in the industry.