Specialty Bearings - SKF

1 Specialty Bearings203 TypePageAdapter204 Conveyor Roll 205 Dynamometer 207 Electric Motor quality / ASMA cross reference209 Felt Seal Replacement 224 Mast Guide 228 Wide Inner Ring 231In addition to our standard line of bearing products,MRC bearing Services also has the capability ofsupplying several non standard or Specialty Bearings shown above and described on thefollowing pages are a few examples of our specialtybearings. If you need information about a bearingtype not shown please contact our engineering following are brief descriptions of our Bearings have a 1:12 tapered bore and areused with either an adapter sleeve or directly on atapered shaft. MRC does not furnish adapter Bearings may be mounted directly into aconveyor roll or designed with slots for bracketmounting. They are equipped with closures forprotection and lubricant Bearings are designed to minimizetemperature, noise and vibration.

2 Included arespecial tolerances and an inner ring land guidedphenolic composition Motor QualityElectric motor quality Bearings are designed toprovide quiet and smooth operation in electricmotors. They are available in various configurationsincluding open and single or double sealed orshielded Seal ReplacementFelt seal replacement Bearings incorporate syntheticrubber seals and are a direct replacement for the feltseal GuideMast guide Bearings consist of a family of specialbearings designed to meet the rigorous demands of industrial truck service. For protection they areequipped with synthetic rubber or Inner RingWide inner ring Bearings are used in electric wide inner ring permits the bearing to bemounted without using a locknut on the bearing ServicesAdapter-Type Bearings , Tapered Bore 204 Adapter-type Bearings , when used with adaptersleeves, are designed for mounting on inch sizeshafting without machining the shaft.

3 The taperedsleeve is drawn into the tapered bore of the bearing as the nut is tightened. Soft steel sleeve adapts to the shaft and grips it tightly. Tapered bore of bearing is 1:12 (included angle 4 46 19 ). Adapter sleevedesignation includes nut and lockwasher. (MRC does not supply adapter sleeves.) For mountinginstructions see page InchesWidthBmminramminZD2mminDynamicC3)N lbfBasic Radial Load RatingSpeed Rating2)StaticC0 NlbfSingle andOpen and Shielded Double SealedGreaseOilGreaseRPMRPMRPMF illet Radius1)AdapterSleeve | 5004 38010 0002 25010 00013 000 | 5004 38010 0002 250 7 5001 | 1 | 0006 07015 3003 4409 00011 000 1 | 1 | 0006 07015 3003 440 6 3001 | 400818022 8005130 5 0001 | 1 1007 89023 2005 2107 0008 5004 8001 | 6009 80030 0006 7406 3007 5004 3002 | 50010 70032 5007 310 4 0002 | 3 30014 90049 00011 000 3 4 20018 70064 00014 400 2 800 Note: Adapter and nut are not furnished with ) Fillet radius indicates maximum fillet radius on shaft or in housing which bearing corner will ) Listed values are for pressed steel or polyamide cage, ABEC-1.

4 The values have been determined through historical application and practice. For a more complete explanation, see page )Rating for one million revolutions or 500 hours at 33 | Roll in InchesDynamicC2)NlbfdDBCLEFGB asic Radial Load RatingStaticC0 NlbfCONV-3-SF3). | | | .375 9201 3304 000899 CONV-4-SF3). | | | .5513 5003 030114002 .2213 5003 030114002 9201 3304 000899 CONV-4-E-2 All dimensions shown in drawings 5003 030114002 5601) CONV-3-Y-2 replaced by CONV-3-Y-4. CONV-3-Y-2 did not have cadmium-plated outer ring and )Rating for one million revolutions or 500 hours at 33 | )Check roll ball Bearings are offered for use in either inboard or outboard rollapplications. Some types are designed for mounting directly into a roll, others aredesigned with a milled slot in the outer ring for simplified bracket mounting.

5 Seals in thepermanently lubricated bearing types retain lubricant for the life of the bearing , andprotect against entrance of foreign matter. Maximum adjustment for belt alignment isprovided, resulting in less belt wear. Cadmium-plated outer rings are supplied, except rolls equipped with CONV-504-3 Bearings turn on stub shafts designed forself-alignment in bearing bore and ease of removal. CONV-504-3 is fitted with syntheticrubber seals which effectively seal out contaminants. 206 MRC Dynamometer Bearings207 For several years, MRC bearing Services has supplied specially designed Bearings for dynamometerapplications. These Bearings are manufactured with the following characteristics. ABEC 5 Inner Ring Tolerances. Inner ring eccentricity value, not to exceed , marked on the inner ring face at the location of maximumlateral runout.

6 Special internal radial clearance. Special E Grade Balls. High speed, lightweight, inner ring land-guided phenolic (Bakelite) bearing Identification316 R D M B K ESeries (300)Bore Diameter Code (80MM) R Type, Single Row, Maximum CapacitySpecial Dynamometer quality FeaturesPhenolic (Bakelite) Separator These Bearings were developed to minimize operating temperatures, noise and vibration in dynamometerapplications. To achieve best results the value of eccentricity marked on the inner ring face should be aligned 180 opposite the high point of eccentricity measured at the shaft journal. If the Bearings are grease lubricated, theyshould be carefully hand packed prior to installation to make sure that grease is worked into the close runningclearance between the of the inner ring and the of the Series300-RDM Series dynamometer Bearings are made with bore diameters ranging from 35mm to Bearings are recommended for high speeddynamometers or any application involving moderate to heavy radial loads, moderate thrust loads in onedirection, or for combinations of )NlbfBasic Radial Load RatingSpeed Rating2)StaticC0 NlbfGreaseOilRPMRPMF illet Radius1)307 RDM4) 0008 77026 0005 85019 50028 000309 RDM4) 50013 20040 5009 10015 40022 400310 RDM4) 60018 10057 0001280014 50021 000311 RDM4) 60021 00067 0001510012 90018 700312 RDM4) 00024 30078 0001750011 50016800313 RDM4)

7 00027 20093 0002090011 00034 400122 000274009 90014 00035 700129 000290008 70012 00041 600160 000360007 80011 00047 700200 000450006 90010100321 RDM4) 00051 500204 000459006 4009 500322 RDM4) 00057 300255 000573006 0009 000324 RDM4) 00059 600300 000674006 0008 400326 RDM4) 00066 500345 000776005 3007 800328 RDM4) 00078 900400 000899004 8007 300330 RDM4) 00087 700475 0001070004 6006 700332 RDM4) 00095 100530 0001190004 1006 200 1) Fillet radius indicates maximum fillet radius on shaft or in housing which bearing corner will ) Listed values are for inner ring land guided, phenolic composition cage. The values have been determined through historical application and practice. For a more complete explanation, see page ) Rating for one million revolutions or 500 hours at 33 | ) Typically non-stocked sizes, please check availability before designing into Cross Reference209 MRC bearing Services manufactures its deep grooveball Bearings to meet the high demands for quiet andsmooth running Bearings for the electric motor boxes are clearly labeled with the letters EMQ to identify them as being Electric Motor quality .

8 Many electric motors specification plates identify thebearings to be used in the motor with an AmericanBearing Manufacturers Association (ABMA) your convenience, an ABMA identification codechart is provided along with a list of popular ABMA numbers and their corresponding MRC part EMQ Bearings are packaged with a premiumquality polyurea grease having an NLGI #2 DataPageABMA Identification Code ChartABMA cross reference to MRC part numbers210212210 MRC bearing ServicesABMA Identification CodeABMA Standard 20, 1987 The ABMA (American bearing ManufacturersAssociation) method of identification is arranged in five sections. An abbreviated explanation of eachsection is provided below. This information will allowidentification of most general purpose Bearings . Ifadditional assistance is required please contact MRCB earing Arrangement of Radial BearingsRadial ball and roller bearingsBasic NumberSection 1 Type and boundary dimensions Bore0000 AAA 00 A AA A 0 0 A 000 TypeOutside diameter and widthCage and separators Shields and sealsDuplex mounting modificationBearing ringsInternal fitTolerances Section 2 Modification of design Section 3 Internal fit and tolerances Section 4 Lubricants and preservativesSpecial requirementsSection 5 Supplementary Number Section 1 Bore Bore Diameter in mm TypeOutside diameter and width 02 = 200 19 =

9 1900 03 = 300 32 = 5200 04= 40033 = 5300 10 = 100 34 = 5400 Section 2 Cage J= Pressed steel Y = Pressed brass K = Machined bronze, land guided D = Non-metallic, land guided T = Non-metallic, ball guided V = No cage X = Any cage acceptableShields and seals P = Permanently fastened shield D = Removable contact seal H = Labyrinth seal G= Contact seal, any type X = Spacer used when no closure requiredBearing ring modification G= Snap ring in normal position C=Snap ring in opposite position N = Snap ring groove, less snap ring A=Snap ring groove in opposite position, less snapringDuplex mounting D = Universally ground single bearing (DU) R=DB pair U = DF pair T = DT pair Section 3 Internal fit 0 = Normal (ST) 2 = Tight (TI) 3 = Loose (LO) 4 = Extra loose (XL) 5 = Greater than symbol 4 Duplex Bearings 7 = Light preload 8 = Medium preload 9 = Heavy preloadTolerance 0 = ABEC-1 6 = ABEC-3 5 = ABEC-5 4 = ABEC-7 2 =ABEC-9 Section 4 Lubricant X = Manufacturers standard A = Specific lube to satisfy a particular conditionSection 5 Special requirements See following page*Radial type, 0 contact angle substitute 5000M.

10 **Radial type, 0 contact angle substitute SBD5000BS1200 EBL MBE5000 MBY9000 HBH RBG5000 CBZ9000 UBA7000BF5000M*BICR(INCH)BT7000 PBK5000C**BIHXLS211 ABMA Identification Code(ABMA Standard 20, 1987)Section 5 Special requirements08 = High point of inner ring eccentricity marked onface09 = High point of outer ring eccentricity marked onface 10 = High points of inner and outer ring eccentricitiesmarked on faces 11 = Surfaces of all steel bearing parts coated byblack iron oxide process 16 = Bore of inner ring copper plated, .0003 inchesthick per side 17 = Bore of inner ring and outside surface of outerring copper plated, .0003 inches thick per side 19 = Width tolerance for assembled bearing fromthrust face of inner ring to opposite face of outerring under applied end play gauging load 0 to inches 20 = Rings, rolling elements and cages made ofstainless steel 25 = Inner and outer rings to be chrome plated 26 = Stabilize for size change of less than at300 F after 2500 hours 28 = Stabilize for size change of less than at390 F after 2500 hours 29 = Stabilize for size change of less than at480 F after 2500 hours 30 = Stabilize for size change of less than at570 F after 2500 hours 31 = Stabilize for size change of less than at660 F after 2500 hours 100 = Government requirements not otherwise information must be obtained from theappropriate government Identification Code Examples210 SFFG 50BC02 JPPG30X 50 = Bore in mm BC = Type S 02 = 200 Series J = Pressed steel cage PP = Two shields G = Snap ring 3 = Loose fit (LO)