Deep Groove Ball Bearings. it s your turn LFD-GROUP. Success through Precision.

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1 it s your turn Success through Precision. LFD-GROUP In-house Manufacturing. Bearing specification optimization. Cost effective and efficient. Deep Groove Ball Bearings c a t a l o g u e

2 LFD-GROUP LFD-Headquarters Dortmund Giselherstraße 9 D Dortmund Phone: Fax: info@lfd.eu Internet: Contacts Leipzig Phone: Fax: leipzig@lfd.eu Italy Phone: Fax: italy@lfd.eu Spain Phone: Fax: spain@lfd.eu France Phone: Fax: france@lfd.eu Hungary Phone: Fax: hungary@lfd.eu China Phone: Fax: shanghai@lfd.eu USA (coming Summer 2010) We have made every effort to ensure that all data have been compiled and checked thoroughly, however, we accept no responsibility for any errors or incompleteness. Copyright by LFD Wälzlager GmbH. Any reproduction, including excerpts, only with our written permission. 2 nd edition

3 LFD-GROUP Index 1.0 The LFD-Group 1.1 Success through Precision Service Concept Total Quality Management starts in the Steel Plant Customer Service Research and Development Product overview Deep Groove Ball Bearings 2.1 Construction of Deep Groove Ball Bearings Bearing symbols Tolerances of deep groove ball bearings Tolerances for radial bearings Load capacity and service life Equivalent dynamic bearing load Pr Permissible static load Lubrication Materials Fits and radial clearance Fits for radial bearings of precision class Shaft fits/housing fits according to type of load Housing fits Shaft fits Lubricants Types of bearings 3.1 Miniature ball bearings from MR 72, 683,623,694,634, Deep Groove Ball Bearings 6800,6900,6000,6200,6300,16003, Deep Groove Ball Bearings AISI 440 C SS 607, SS 6800, SS 6900, SS 6000, SS 6200, SS it s your turn Success through Precision.

4 LFD-GROUP Success through Precision The LFD-Group is a global company that has gained significant market share since establishment in Our core competence is the production of Deep Groove Ball Bearings according to rigorous German Standards. Fully Automatic Production Lines guarantee our consistently high quality product. LFD has established a well-known brand name through optimization of bearings in industrial applications and offering them at very competitive prices. We complete the LFD delivery program by purchasing additional bearing items from audited suppliers in our strategic partner network. Service Concept We continually improve our service by working closely with clients to offer practical solutions for various industrial applications. Now, with the expansion of the LFD Group by founding LFD Automotive, we give the industry a strong partner. Total Quality Management starts in the Steel Plant Our Quality Department begins by investigating quality in the steel plant. The foundation of success for producing good bearings is using 4

5 LFD-GROUP superior bearing steel. The quality of the steel is a critical factor in determining bearing life time. All raw materials deliveries for our manufacturing plants are produced according to strict guidelines and documentation. Our production meets the stringent requirements of German Standards.The result is that you can rely on LFD bearings to handle incredible loads in extreme and difficult environments. Customer Service We believe in being close to customers, using open and direct communication and maintaining a solid presence in the international marketplace. Our highly motivated international team of professionals ensures that your needs will be met to your full satisfaction. Our large capacity warehouses and strong logistics partners enable LFD to perform well for all kinds of storage and shipping requirements. The result is a consistently high level of customer satisfaction. An interesting and important difference between LFD and our competitors is that we maintain a fully registered and licensed company in China. While many other companies only purchase goods for export, LFD can also deliver directly within the Chinese market. This is especially beneficial to clients with their own manufacturing plants in China. This is just one more advantage of working with LFD. Research and Development Our LFD facilities are equipped with state of the art laboratories. Innovative projects involving new configurations and modifications can be documented and handled in-house to further save time and optimize the process. Additional tests are performed according to customer requests. Measurement protocols and Initial Sample Test Reports are also documented. Standard LFD Bearings are designed to fulfill most general industrial applications. Through consultancy and diligence, LFD Engineers will work together with the customer during the design phase. Therefore the bearings are optimized to meet the specific needs of the customers application. This automatically leads to another cost advantage. 5 it s your turn Success through Precision.

6 LFD-GROUP Product overview LFD deep groove ball bearings Series 60.., 62.., 63.., 64.., 68.., 69.., 160.., ZZ/2RS.. LFD taper roller bearings Series 320.., 330.., 331.., 302.., 322.., 332.., 303.., 313.., LFD spherical roller bearings Series 213.., 222.., 223.., 230.., 231.., 232.., 240.., 241.., are suitable for radial and axial loads in both directions - are especially versatile - are suitable for high speeds - simple structure for more economic bearing solutions - also available in steel with increased corrosion resistance (AISI 440C) - are suitable for high radial and axial loads in one direction - capable to absorb simultaneously acting radial and axial loads - are dismountable; the inner ring (including rollers and cage) can be mounted separately from the outer ring - are suitable for high axial and radial loads in both directions - are designed for very high loads - compensate for angular misalignments 6

7 LFD-GROUP LFD cylindrical roller bearings Series N, NJ, NU, NUP 2.., 3.., 4.., 22.., 23.., (E).. - are suitable for high radial loads - reinforced E-Version designed for highest carrying capacities - detachable design facilitating mounting and dismounting - various cylindrical roller guide configurations, with or without guiding ribs on outer - or inner ring LFD housing units - available as grey cast iron or sheet-steel housings with sealed, deep groove ball bearings inserted - are fixed to the shaft by grub screws, eccentric locking collar or adapter sleeve - compensate for static misalignment of the shaft by the spherical outer ring of the inserted ball bearing - under normal service conditions, the sealed bearings are filled for the life time Self-aligning ball bearings (K) (K) (K / 2 RS) (K / 2 RS) (TV) Angular contact ball bearings Single row and double row (ZZ / 2 RS) (ZZ / 2 RS) (B) (B) Double-row deep groove ball bearings Deep groove ball thrust bearings Spherical plain bearings GE ES (2 RS) GE EC (2 RS) GE FO (2 RS) GE HO (2 RS) GE GS (2 RS) GIHN LO (K / 2 RS) GIHR ES (K / 2 RS) GIHL ES (K / 2 RS) Adapter sleeves H H 222 H H 322 H H 2340 H H 3140 Rod ends KI (D) KIL (D) KA (D) KAL (D) 7 it s your turn Success through Precision.

8 Construction of deep groove ball bearings outer ring ball inner ring cage At choice: shield or seal 8

9 Bearing symbols The complete bearing designation is composed of prefix symbols, base symbols and suffix symbols. Prefix symbols generally indicate special configurations. Rust-proof materials are indicated with the abbreviation for stainless steel for instance. The base symbol relays information regarding the bearing series (first two digits) and the bore diameter (last two digits). From code digit 04, the dimension of the bore diameter is five times the value of the bore diameter code digit, for example 6208 indicates that the bore diameter is d = 40 mm. Exceptions are indicated by a forward slash in front of the code digit. Cage configurations, shields and seals, etc. are encoded in the suffix symbols. The most important suffix symbols are listed in the following table: Symbol Meaning Z Metal shield RS Contact seal RZ Non-contact seal N Snap ring groove in outer ring, without snap ring NR Snap ring groove in outer ring, incl. snap ring ZV Extended inner ring, special configuration TNGH Glass-fiber reinforced plastic cage M Brass cage C2 Radial tolerance less than normal C3 Radial tolerance bigger than normal C4 Radial tolerance bigger than C3 P6 Precision class 6 PX (n) Special tolerances L (n) Lubricating grease, e.g. L1 Shell Alvania No. 2 VZ Galvanized surfaces Example: 6204 ZZ C3 L2 PX1 Base symbols Z-shield on both sides special tolerance type of grease Radial clearance C3 increased compared with standard 9 it s your turn Success through Precision.

10 Tolerances of deep groove ball bearings It goes without saying that all deep groove ball bearings indicated in this brochure are in conformity with the valid ISO-standards as well as the standards DIN 625 and DIN 620 (with the exception of 620-6). We have made every effort to ensure that all data have been compiled and checked thoroughly, however, we accept no responsibility for any errors or incompleteness. The dimensions and tolerances are specified in the respective standards, e.g. DIN 620, DIN 625 or ISO 15. They describe the shape and the running precisions. The tolerance class P0 indicates the standard tolerance values; P6 or P5, etc. are higher precision classes according to DIN 620. A comparable rating is done according to the American standard (ANSI). DIN 620 P0 P6 P5 P4 ANSI ABEC-1 ABEC-3 ABEC-5 ABEC-7 The abbreviations used in the tables are explained as follows: 1. Dimensions d Nominal dimension of the bore diameter D Nominal dimension of the outer diameter B Nominal dimension of the width of the outer ring 2. Dimension deviations dmp Deviation of the mean bore diameter from the nominal dimension Dmp Deviation of the mean outer diameter from the nominal dimension Bs Deviation of the inner ring width from the nominal dimension Cs Deviation of the outer ring width from the nominal dimension 3. Dimension variations V dp Variation of the bore diamenter in a radial plane V dmp Variation of the mean bore diameter V Dp Variation of the outer diameter in a radial plane V Dmp Variation of the mean outer diameter V Bs Variation of the inner ring width Variation of the outer ring width V Cs 4. Concentricity tolerances K ia Concentricity of the inner ring (radial run-out) K ea Concentricity of the outer ring (radial run-out) 10

11 Tolerances for radial bearings Precision class PO Inner ring Ød [mm] Deviation dmp Vdp Series 7,8,9 Series 0,1 Series 2,3,4 Vdmp Kia Bs VBs more than up to upper lower max max max upper lower max 0,6 2, , Outer ring ØD [mm] Deviation Dmp VDp Open bearings Series 7,8,9 Series 0,1 Series 2,3,4 Series 2,3,4 with shields or seals VDmp Kea Cs VCs more than up to upper lower max max max max max max 2, see Bs see VBs Tolerances in [μm] 11 it s your turn Success through Precision.

12 Tolerances for radial bearings Precision class P6 Inner ring Ød [mm] Deviation dmp Vdp Series 7,8,9 Series 0,1 Series 2,3,4 Vdmp Kia Bs VBs more than up to upper lower max max max upper lower max 0,6 2, , Outer ring ØD [mm] Deviation Dmp VDp Open bearings Series 7,8,9 Series 0,1 Series 2,3,4 Series 0,1,2,3 with shields or seals VDmp Kea Cs VCs more than up to upper lower max max max max max max 2, see Bs Tolerances in [μm] see VBs 12

13 Tolerances for radial bearings Inner ring Ød [mm] Deviation dmp Series 7,8,9 Vdp Series 0,1 Series 2,3,4 Precision class P5 Vdmp Kia Bs VBs more than up to upper lower max max max upper lower max 0,6 2, , Outer ring ØD [mm] Deviation Dmp VDp Open bearings Series 7,8,9 Series 0,1 Series 2,3,4 with shields or seals VDmp Kea Cs VCs more than up to upper lower max max max max max max 2, No values described 6 11 see Bs for these bearings Tolerances in [μm] 13 it s your turn Success through Precision.

14 Load capacity and service life The fatigue life can be calculated by means of a formula which incorporates the dynamic load rating, the bearing load and the operating speed. In the advanced method according to ISO 281, the failure probability as well as the influences of material and lubricant are also taken into account by means of the factors a1, a2 and a3. A lifte-expectancy of 90 % is usually estimated. As a formula, this is represented for rotating inner ring as follows: C 3 10 L10h [h] = ( 6 r x P r 60 N N speed in rpm-1 Cr dynamic load in N Pr equivalent bearing load in N ( Modified in accordance with ISO 281 L10hmod = a2*a3*l10h (for a1 = 1) a) The life-expectancies with allocated a1-values are shown in the following table: Lifeexpectancy Ln a1 90 % L % L % L % L % L % L

15 b) Heat stabilized bearings usurally feature a lower hardness than standard bearings made of material GCr15 or 100 Cr6 so that an amendment must be made using the factor a2: Heat stabilizing a2 max. temperature 200 C 0.68 max. temperature 250 C 0.30 c) The lubricant influence factor a3 is higher than 1 under ideal conditions, however, with lower speeds or in case of contamination etc., a clear reduction in service life must be expected (a3<<1). In special cases please contact our advisory service. Equivalent dynamic bearing load P r P r = X * Fr + Y * Fa The factors X and Y are determined via the ratio Fa/C or. A few relations are listed in the following table: Fa/Cor e Fa/Fr <= e Fa/Fr > e X Y X Y For small or miniature ball bearings below d = 10 mm, the load ratio Fa/Cor should not exceed the limit value of it s your turn Success through Precision.

16 Permissible static load The static load is used to determine the design of the bearing with low speeds or slewing movements. S 0 = C or / P or max The static carrying safety S 0 should be calculated by means of the following criteria: operation condition S 0 high running precision required >2 standard requirements 1 low requirements > 0.5 Lubrication Deep groove ball bearings sealed on both sides feature lifetime lubrication and are therefore maintenance-free. In this connection it should also be noted that the grease life of the respective lubricant will reduce the service life of the bearing in certain cases. The standard greases used are lithium soap greases with a mineral oil base and a service temperature range between -25 and +120 C. It can be necessary, depending on the operating conditions, to use a special grease or even to reconvert to the maintenance operation. For the high temperatures which kiln truck bearings have to stand, paste-like lubricants such as molybdenum disulphide for example, must be used as a total loss lubrication. Additionally, the forming of a lubricating film is conditional on a minimum relative speed and can be estimated using the empirical formula n*dm > The mean bearing diameter dm is determined from 0.5 * (d+d) Heavy bearing loads require lubricants with EP-additives which possess optimum friction reducing properties. 16

17 Materials The standard material used for rings and balls is the chromium steel with the designation GCr15. The following percents by weight are permissible for the most important steel components: GCr 15 C % Mn 0.50% Si % P < 0.025% S < 0.025% Cr % This material is designed to withstand an application temperature range of -20 C up to +120 C and is therefore adapted to the respective RS-seal material NBR. The cages are made of pressed steel and are designed in accordance with overall size as follows: C Mn Si P S Cr Designation 08F <0.03 <0.04 <0.04 <0.1 The rings and balls of bearings of rust-inhibiting design are manufactured of AISI 440C. The cages of these bearings are made of A ISI 304. (Other special materials on request) AISI 440C C % Mn 1.0% Si < 1.0% P < 0.04% S < 0.03% Cr % 17 it s your turn Success through Precision.

18 Fits and bearing clearance Bearing clearance radial clearance = axial clearance = The radial clearance is reduced with the installation of a press fit. Differences in termperature between the inner ring and outer ring as well as the loads on the bearing also influence the effective bearing clearance. In principle, a minimum operating clearance is requested with regard to minimum operating noise possible. It must be taken into consideration, however, that high thrust loads as well as inclined positions can be compensated better with bigger clearance. The press fit between shaft and inner ring is channelled into the recess of the inner ring, thus reducing the bearing clearance. When fit via the outer ring, the pinching amounts to approx. 60 % - 90 % of the overlap (values depending on the aspect ratios). The operation of deep groove ball bearings under preload (= negative clearance) can considerably reduce the service life and lead to premature failure. Therefore the design generally features reduced operating clearance. Operating clearance Service life preload 0 clearance 18

19 Radial clearance of deep groove ball bearings Radial clearance of electric motor bearings Nominal size of bore d (mm) C2 [μm] Standard [μm] C3 [μm] C4 [μm] C5 [μm] Nominal size of bore d (mm) CM more than up to min max min max min max min max min max more than up to min max it s your turn Success through Precision.

20 Fits for radial bearings of precision class 0 Fits shafts/bearings Ø d [mm] dmp g5 g6 h5 h6 j5 js5 j6 more than up to from below bearing shaft bearing shaft bearing shaft bearing shaft bearing shaft bearing shaft bearing shaft F~ 9L 4F~ 12L 8F~ 5L 8F~ 8L 11F~ 2L 10.5F~ 2.5L 14F~ 2L F~ 11L 3F~ 14L 8F~ 6L 8F~ 9L 12F~ 2L 11F~ 3L 15F~ 2L F~ 14L 2F~ 17L 8F~ 8L 8F~ 11L 13F~ 3L 12F~ 4L 16F~ 3L F~ 16L 3F~ 20L 10F~ 9L 10F~ 13L 15F~ 4L 14.5F~ 4.5L 19F~ 4L F~ 20L 3F~ 25L 12F~ 11L 12F~ 16L 18F~ 5L 17.5F~ 5.5L 23F~ 5L F~ 23L 5F~ 29L 15F~ 13L 15F~ 19L 21F~ 7L 21.5F~ 6.5L 27F~ 7L F~ 27L 8F~ 34L 20F~ 15L 20F~ 28L 26F~ 9L 27.5F~ 7.5L 33F~ 9L F~ 32L 11F~ 39L 25F~ 18L 25F~ 25L 32F~ 11L 34F~ 9L 39F~ 11L F~ 32L 11F~ 39L 25F~ 18L 25F~ 25L 32F~ 11L 34F~ 9L 39F~ 11L F~ 32L 11F~ 39L 25F~ 18L 25F~ 25L 32F~ 11L 34F~ 9L 39F~ 11L F~ 35L 15F~ 44L 30F~ 20L 30F~ 29L 37F~ 13L 40F~ 10L 46F~ 13L F~ 35L 15F~ 44L 30F~ 20L 30F~ 29L 37F~ 13L 40F~ 10L 46F~ 13L F~ 35L 15F~ 44L 30F~ 20L 30F~ 29L 37F~ 13L 40F~ 10L 46F~ 13L F~ 40L 18F~ 49L 35F~ 23L 35F~ 32L 42F~ 16L 46.5F~11.5L 51F~ 16L F~ 40L 18F~ 49L 35F~ 23L 35F~ 32L 42F~ 16L 46.5F~11.5L 51F~ 16L F~ 43L 22F~ 54L 40F~ 25L 40F~ 36L 47F~ 18L 52.5F~12.5L 58F~ 18L F~ 43L 22F~ 54L 40F~ 25L 40F~ 36L 47F~ 18L 52.5F~12.5L 58F~ 18L F~ 47L 25F~ 60L 45F~ 27L 45F~ 40L 52F~ 20L 58.5F~13.5L 65F~ 20L F~ 47L 25F~ 60L 45F~ 27L 45F~ 40L 52F~ 20L 58.5F~13.5L 65F~ 20L Fits Housing/Bearing Ø D [mm] Dmp G7 H6 H7 J6 J7 Js7 more than up to from below housing bearing housing bearing housing bearing housing bearing housing bearing housing bearing L~ 28L 0~ 17L 0~ 23L 4F~ 13L 7F~ 16L 7.5F~ 15.5L L~ 32L 0~ 19L 0~ 26L 5F~ 14L 8F~ 18L 9F~ 17L L~ 37L 0~ 22L 0~ 30L 5F~ 17L 9F~ 21L 10.5F~ 19.5L L~ 45L 0~ 27L 0~ 36L 6F~ 21L 11F~ 25L 12.5F~ 23.5L L~ 53L 0~ 32L 0~ 43L 6F~ 26L 12F~ 31L 15F~ 28L L~ 62L 0~ 37L 0~ 50L 6F~ 31L 13F~ 37L 17.5F~ 32.5L L~ 72L 0~ 43L 0~ 58L 7F~ 36L 14F~ 44L 20F~ 38L L~ 79L 0~ 50L 0~ 65L 7F~ 43L 14F~ 51L 20F~ 45L L~ 91L 0~ 59L 0~ 76L 7F~ 52L 16F~ 60L 23F~ 53L L~ 104L 0~ 67L 0~ 87L 7F~ 60L 16F~ 71L 26F~ 61L L~ 115L 0~ 76L 0~ 97L 7F~ 69L 18F~ 79L 28.5F~ 68.5L L~ 128L 0~ 85L 0~ 108L 7F~ 78L 20F~ 88L 31.5F~ 76.5L 20

21 Fits für RadialBearing der Precision class 0 Fits shafts/bearings Ø d [mm] dmp js6 k5 k6 m5 m6 n6 p6 r6 more bearing shaft bearing shaft bearing shaft bearing shaft bearing shaft bearing shaft bearing shaft bearing shaft than up to from below F~ 4L 14F~ 1F 17F~ 1F 17F~ 4F 20F~ 4F 24F~ 8F 28F~ 12F F~ 4.5L 15F~ 1F 18F~ 1F 20F~ 6F 23F~ 6F 27F~ 10F 32F~ 15F F~ 5.5L 17F~ 1F 20F~ 1F 23F~ 7F 26F~ 7F 31F~ 12F 37F~ 18F F~ 6.5L 21F~ 2F 25F~ 2F 27F~ 8F 31F~ 8F 38F~ 15F 45F~ 22F F~ 8L 25F~ 2F 30F~ 2F 32F~ 9F 37F~ 9F 45F~ 17F 54F~ 26F F~ 9.5L 30F~ 2F 36F~ 2F 39F~ 11F 45F~ 11F 54F~ 20F 66F~ 32F F~ 11L 38F~ 3F 45F~ 3F 48F~ 13F 55F~ 13F 65F~ 23F 79F~ 37F F~ 12.5L 46F~ 3F 53F~ 3F 58F~ 15F 65F~ 15F 77F~ 27F 93F~ 43F 113F~ 63F F~ 12.5L 46F~ 3F 53F~ 3F 58F~ 15F 65F~ 15F 77F~ 27F 93F~ 43F 115F~ 65F F~ 12.5L 46F~ 3F 53F~ 3F 58F~ 15F 65F~ 15F 77F~ 27F 93F~ 43F 118F~ 68F F~ 14.5L 54F~ 4F 63F~ 4F 67F~ 17F 76F~ 17F 90F~ 31F 109F~ 50F 136F~ 77F F~ 14.5L 54F~ 4F 63F~ 4F 67F~ 17F 76F~ 17F 90F~ 31F 109F~ 50F 139F~ 80F F~ 14.5L 54F~ 4F 63F~ 4F 67F~ 17F 76F~ 17F 90F~ 31F 109F~ 50F 143F~ 84F F~ 16L 62F~ 4F 71F~ 4F 78F~ 20F 87F~ 20F 101F~ 34F 123F~ 56F 161F~ 64F F~ 16L 62F~ 4F 71F~ 4F 78F~ 20F 87F~ 20F 101F~ 34F 123F~ 56F 165F~ 98F F~ 18L 69F~ 4F 80F~ 4F 86F~ 21F 97F~ 21F 113F~ 37F 138F~ 62F 184F~ 108F F~ 18L 69F~ 4F 80F~ 4F 86F~ 21F 97F~ 21F 113F~ 37F 138F~ 62F 190F~ 114F F~ 20L 77F~ 5F 90F~ 4F 95F~ 23F 108F~ 23F 125F~ 40F 153F~ 68F 217F~ 138F F~ 20L 77F~ 5F 90F~ 4F 95F~ 23F 108F~ 23F 125F~ 40F 153F~ 68F 217F~ 138F Fits Housing/Bearing Ø D [mm] Dmp K6 K7 M7 N7 P7 more housing bearing housing bearing housing bearing housing bearing housing bearing than up to from below F~ 10L 10F~ 13L 15F~ 8L 19F~ 4L 24F~ 1F F~ 10L 12F~ 14L 18F~ 8L 23F~ 3L 29F~ 3F F~ 11L 15F~ 15L 21F~ 9L 28F~ 2L 35F~ 5F F~ 14L 18F~ 18L 25F~ 11L 33F~ 3L 42F~ 6F F~ 17L 21F~ 22L 30F~ 13L 39F~ 4L 51F~ 8F F~ 19L 25F~ 25L 35F~ 15L 45F~ 5L 59F~ 9F F~ 22L 28F~ 30L 40F~ 18L 52F~ 6L 68F~ 10F F~ 29L 28F~ 37L 40F~ 25L 52F~ 13L 68F~ 3F F~ 35L 33F~ 43L 46F~ 30L 60F~ 16L 76F~ 3F F~ 40L 36F~ 51L 52F~ 35L 66F~ 21L 88F~ 1F F~ 47L 40F~ 57L 57F~ 40L 73F~ 24L 98F~ 1F F~ 53L 45F~ 63L 63F~ 45L 80F~ 28L 108F~ 0 F=Tight fit L=Loose fit 21 it s your turn Success through Precision.

22 Shaft fits / Housing fits according to type of load Type of load Illustration Load of the bearing rings Fit inner ring: outer ring: load direction: rotating stationary constant constant load direction rotating load on inner ring inner ring: tight fit inner ring: outer ring: load direction: stationary rotating rotating with outer ring rotating load point load on outer ring outer ring: loose fit inner ring: outer ring: load direction: stationary rotating constant constant load direction point load on inner ring inner ring: loose fit inner ring: outer ring: load direction: rotating stationary rotating with inner ring rotating load rotating load on outer ring outer ring: tight fit Housing fits Housing solid or split-type housing solid housing point load on outer ring indefinite load direction rotating load on outer ring Type of load Housing fit all types of loads H 7 heat supply via shaft G 7 light up to normal JS 7 normal up to heavy load K 7 heavy shock load M 7 light or varyingly heavy load M 7 normal up to heavy load N 7 heavy load; small wall thickness high shock load P 7 22

23 Shaft fits Bearing type bearing with cylindrical bore rotating load on inner ring or indefinite load direction Type of load light up to varying loads normal up to heavy loads very heavy loads or shock loads Ball bearings Cylindrical and taper roller bearings Shaft diameters mm Spherical roller bearings Shaft fit 18 h js k m 6 18 js k m m n p r n p r 6 point load on inner ring axial displacement of the inner ring necessary axial displacement of the inner ring not necessary all shaft diameters g 6 all shaft diameters h 6 bearing with tapered bore with clamping sleeves all types of loads all shaft diameters h 9/IT5 Remark: 1) These recommendations refer to solid shafts made of steel. 2) js6 is recommended for thrust-loaded radial bearings for all shaft diameters. 3) Loads are classified as follows: light loads: Pr 0.06 Cr normal loads: 0.06 Cr < Pr 0.12 Cr heavy loads: Pr 0.12 Cr Thus: Pr: equivalent radial load Cr: dynamic load rating 23 it s your turn Success through Precision.

24 Lubricants Manufacturer Brand name Thickener Base oil Operating temperature C China Shanghai Chaoling Lithium Mineral -25 ~ +120 Shell Alvania No.R2 Lithium Mineral -30 ~ +130 Aeroshell No.7 Microgel Diester -73 ~ +149 Kyodo Yushi Multemp SRL Lithium Diester -50 ~ +150 Isoflex Topas NB52 Barium Synthetic hydrocarbon -50 ~ +120 Isoflex LDS 18 Special A Lithium Diester -50 ~ +120 Klmore than Asonic GHY 72 Polyurea Ester -40 ~ +180 Staburags NBU 12 Barium Mineral -15 ~ +130 Barrieta L55-2 PTFE Polyphenylether Oil -40 ~ +260 Caltex Chevron SRI 2 Polyurea Mineral -30 ~ +175 Other lubricants on request 24

25 3.0 Types of bearings B D d open -ZZ -2RS 3.1 Miniature ball bearings from MR 72, 683,623,694,634, Deep Groove Ball Bearings 6800,6900,6000,6200,6300,16003, Deep Groove Ball Bearings AISI 440 C SS 607, SS 6800, SS 6900, SS 6000, SS 6200, SS it s your turn Success through Precision.

26 B Miniature ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings N dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight g MR MR72-ZZ ZZ MR MR83-ZZ MR MR93-ZZ ZZ MR MR74-ZZ MR MR84-ZZ MR MR104-ZZ ZZ ZZ ZZ

27 Miniature ball bearings D B d Main dimensions mm d D B Load ratings N dyn. Cr open -ZZ -2RS stat. Cor Limiting speeds min -1 Grease Oil Type Weight g MR MR85-ZZ MR MR95-ZZ MR MR105-ZZ ZZ ZZ ZZ ZZ ZZ MR MR106-ZZ MR MR106-ZZ ZZ ZZ ZZ MR it s your turn Success through Precision.

28 Miniature ball bearings D B d Main dimensions mm Load ratings N Limiting speeds min -1 Weight g d D B Type dyn. stat. Grease Oil Cr Cor MR117-ZZ MR MR137-ZZ ZZ ZZ ZZ MR MR128-ZZ MR MR148-ZZ ZZ ZZ ZZ ZZ open -ZZ -2RS ZZ ZZ ZZ

29 Deep groove ball bearings D B d Main dimensions mm Load ratings KN open -ZZ -2RS Limiting speeds min -1 Weight kg d D B Type dyn. stat. Grease Oil Cr Cor ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 29 it s your turn Success through Precision.

30 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 30

31 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 31 it s your turn Success through Precision.

32 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ Load rating optimization on request 32

33 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 33 it s your turn Success through Precision.

34 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 34

35 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg Z RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 35 it s your turn Success through Precision.

36 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 36

37 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ Load rating optimization on request 37 it s your turn Success through Precision.

38 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 38

39 B Deep groove ball bearings D d open -ZZ -2RS Main dimensions mm d D B Load ratings KN dyn. Cr stat. Cor Limiting speeds min -1 Grease Oil Type Weight kg ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS ZZ RS Load rating optimization on request 39 it s your turn Success through Precision.

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