Ball Bearings for the Food Industry

Schaeffler products have proved themselves over many years even under critical and problematic application conditions. In addition to the specific environmental influences, legal or religious requirements in the food and beverage industry also call for the use of special high-quality solutions. For this purpose, Schaeffler offers a range of deep groove ball bearings made from corrosion-resistant steel. Furthermore, specific lubricants are used that meet the special requirements and approval regulations such as NSF H1. These lubricants are non-toxic and neutral in taste and odour, and are therefore...

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Deep groove ball bearings for the food industry Page Product overview Design and safety guidelines Dimension table Schaeffler Technologies

Product overview Single row deep groove ball bearings Deep groove ball bearings for the food industry S60..-2RSR-FD, S62..-2RSR-FD, S63..-2RSR-FD FD design Contact seals on both sides Schaeffler Technologies

Features Deep groove ball bearings in FD design are designed for use in the food industry. They correspond in their structure to single row standard deep groove ball bearings but are specially optimised in relation to: ■ suitable materials for the food industry ■ significantly higher corrosion and media resistance. Bearing design Single row deep groove ball bearings are the most frequently used type of rolling bearing. They are produced in numerous sizes and designs and are particularly economical. Due to their low frictional torque, they are also suitable for high speeds. Due to the raceway...

Media resistance Resistance to media Deep groove ball bearings for the food industryIn the food industry in particular, the resistance of the material in relation to various cleaning agents is of increasing importance. Medium + Resistant (+) Moderately resistant (-) Barely resistant - Not resistant 1 Not tested. Estimate generated from remaining test series. 2) Not tested. No estimate possible. In the case of direct exposure to spray water, prior consultation with Application Engineering is required.

Lubrication Food-grade grease application The high-quality grease used for lubrication is approved for food applications to category NSF H1. The grease is particularly suitable for use in the food industry and meets the quality requirements of FDA 21 CFR 178.3570 in full. Furthermore, the grease is Halal and Kosher-certified. A lubricant of class NSF H1 is suitable for applications in which incidental contact between food and lubricant may occur and is unavoidable by technical measures. Such lubricants must be non-toxic and neutral in taste and odour. The Halal and Kosher certification of the...

Operating temperature Prefixes and suffixes Available designs Deep groove ball bearings with RSR type seals can be used at operating temperatures of -30 °C to +100 °C, restricted by the grease. Prefixes and suffixes for the available designs, see table. Further information ■ General information from Catalogue HR 1, Rolling Bearings, must be observed. Download at: https://www.schaeffler.de/std/1D65 ■ For additional information on corrosion resistance, see TPI 64, Corrosion-resistant products. Here, you will also find other corrosion-resistant bearings made from the high-performance steels Cronidur...

Design and safety guidelines Further information The information on the design of the bearing arrangement, lubrication, mounting and dismounting and on the operation of the bearings provided in the Technical Principles of Catalogue HR 1, must be observed as further information. ■ Technical Principles, Catalogue HR 1, Rolling Bearings. Download at: https://www.schaeffler.de/std/1D65 Load carrying capacity Radial load carrying capacity The balls are in contact with the raceways at one point only. Under purely radial load, the contact points between the rolling elements and raceways lie at the centre...

Axial load carrying capacity Compensation of angular misalignments Speeds X Deep groove ball bearings for the food industry Due to the deep raceway grooves in the bearing rings and the narrow osculation between the raceway grooves and the balls, the bearings can support axial loads in both directions. The axial load carrying capacity is dependent, for example, on the bearing size, the internal construction and the operating clearance. If the axial load is too high, however, this can increase the running noise and considerably reduce the operating life of the bearings. If there is any uncertainty...

Dimensioning Equivalent dynamic bearing load The basic rating life equation L= (Cr/P)p used in the dimensioning of bearings under dynamic load assumes a load of constant magnitude and direction. In radial bearings, this is a purely radial load Fr. If this condition is met, the bearing load Fr is used in the rating life equation for P (P = Fr). If this condition is not met, a constant radial force must first be determined for the rating life calculation that (in relation to the rating life) represents an equivalent load. This force is known as the equivalent dynamic bearing load P. The calculation...

Equivalent static bearing load Static load safety factor Minimum radial load TPI 261 Deep groove ball bearings for the food industry The calculation of P0 for deep groove ball bearings under static load is dependent on the load ratio F0a/F0r and the factor 0,8: F0a ^ 0,8 ^ P0 = F0r F0r F0a > 0,8 ^ P0 = 0,6 • F0r + 0,5 • F0a F0r P0 N Equivalent static bearing load F0r, F0a N Largest radial or axial load present (maximum load). In addition to the basic rating life L (L10h), it is also always necessary to check the static load safety factor S0: Static load safety factor C0 N Basic static load rating,...

Design of bearing arrangements In order to allow full utilisation of the load carrying capacity of the bearings and thus also achieve the requisite rating life, the bearing rings must be rigidly and uniformly supported by means of contact surfaces over their entire circumference and over the entire width of the raceway. The seating and contact surfaces should not be interrupted by grooves, holes or other recesses. The accuracy of mating parts must meet specific requirements, see tables, page 14. Radial location of bearings – fit recommendations In addition to supporting the rings adequately,...