MRC Engineering Handbook - SKF

1 MRCE ngineeringHandbook1 Section 1 Introduction pageMRC and speed rating disclaimer ..5 Warranty statement ..5 Identification earing sym ols .. Identification of non standard 4 escripti e manufacturing suffi elephone and fa num Section earing specification ta les page earing types summary chart .. Single ro deep groo e type S .. 6 Single ro deep groo e cartridge type S C ..46 Single ro deep groo e type S hy Single ro ma imum capacity filling notch type Self aligning all earings .. 1 ou le ro angular contact 5 Single ro 15 angular contact type R.

2 1 Single ro 15 angular contact type S ..1 Single ro angular contact series ..1 Single ro 4 angular contact ro 4 angular contact series ..15 um ac and Single ro angular contact split ring series ..1 Single ro 4 angular contact split ring series ..1 uple angular contact uple 4 angular contact series ..1 6 recision C 5 and C Single ro 15 angular contact type R ..1 4 Single ro deep groo e type S ood or ing all scre support Specialty earings .. 5 dapter 6 ynamometer .. lectric motor uality M cross reference.

3 Elt seal replacement .. 4 Mast guide .. Wide inner 1 a le of contentsMRC Engineering Handbook2 Section ngineering data page uple earings .. 4 series .. 4 C 45 Shaft and housing 51 Internal radial 6 ynamic and static load ratings .. 6 earing Speed factors .. 1 Speed Materials and limitations .. 5 u i ration Snap ring 1 oc nuts loc ashers and loc oc nut tor ue and clamping force .. 6 Installation Shaft and housing shoulder 4 Millimeter inch e ui alents .. raction decimal e ui alents .. 4 Metric con ersion factors.

4 41 seful formulas .. 44 roduct inde .. 6 Section 4 Marathon corrosion resistant housings and earings 5 Section 5 Made to order program 1 a le of contentsMRC Engineering HandbookIntroductionBearing specification tablesIntroductionEngineering dataMarathon seriesMade-to-order13 Section 1 IntroductionMRC and speed rating disclaimer ..5 Warranty statement ..5 Identification earing sym ols .. Identification of non standard 4 escripti e manufacturing suffi elephone and fa num a le of contents page4 MRC history he historical perspecti e of MRCMRC is the outgrowth of three of america s oldest bearing companies Standard roller bearing Compan urne Ball bearing Com pan and Strom bearing Compan he Standard roller bearing Compan was formed when a hiladelphia industrialist S S E eland merged the Ball bearing Com pan of Boston with se en other ma or ball bearing and ball making e uipment manu facturers he compan used the SRB ia mond

5 Trademark SRB made man contribu tions to the ad ancement of anti friction bearings most notabl the de elopment of steel a high carbon high chrome allo steel that greatl impro ed bearing life n rederick urne started the manufacture of ball bearing machiner in amestown ew ork He originated the urne radial thrust angular contact bearing toda s Series in and the urne radial pe R bearing same designation toda in urne also de eloped duple bearings a matched pair of counterbored bearings which were a ma or contribution to the accurac of high speed machine tool spindles Stephen Sn der began manufacturing filling slot radial ball bearings in a small Chicago shop in His business was in corporated in as the S Ball bearing Manufacturing Compan A el Strom became sole owner and changed the name to Strom Ball bearing Manufacturing Compan he compan established itself as a ma or supplier of precision ball bearings to the automoti e and machiner industries A ma or inno ation b Strom was Engineering ser ice pro ided to customers to aid in proper choice of ball bearings their use

6 And guidance for mount ing and maintenance rior to orld ar Albert Rockwell one of two brothers who founded ew e parture Compan formed the Rockwell rake Corporation to manufacture ball bear ings in lain ille Connecticut uring the war Rockwell combined Rockwell rake Corpora tion with se eral other corporations including the Standard roller bearing Compan of hiladelphia After orld ar some of the manufac turing units were li uidated and the compan was reorgani ed as Standard Steel and bearing nc i ision of Marlin Rockwell Corporation n the bearing manufac turing plants were consolidated at lain ille Connecticut he following ear urne Ball bearing Compan merged with Marlin Rock well Corporation MRC purchased Strom Ball bearing Manufacturing Corporation in and its assets were mo ed to amestown ew ork in he manufacturing e perience technical background and managerial skills of these antecedent companies pro ided Marlin Rock well with a firm base out of which to de elop and grow n a new state of the art plant was built at alconer ew ork and an addition to the plant was

7 Completed in he plant was de oted to the manufacture of high precision ball and roller bearings n Marlin Rockwell Corporation was merged with R ncorporated and renamed R Bearings i ision in ith the technological background and facili ties of the parent compan at its disposal R Bearings i ision entered a new period of growth A ball manufacturing plant was ac uired in at instead Connecticut n the i ision built a new facilit at aines ille eorgia to speciali e in high olume bearing production n the bearing i ision was ac uired b the S roup which is an international manufacturing and marketing organi ation composing appro imatel companies with factories together operating in more than countries S sales units are backed up b nearl sales offices and o er distributors and retailers 5 Catalog and speed rating disclaimer and arranty isclaimer he contents of this catalog are the cop right of the publishers and ma not be reproduced e en e tracts unless permission is granted E er care has been taken to insure the ac curac of the information contained in this catalog but

8 No liabilit can be accepted for an errors or omissions isting in this catalog does not necessaril impl product a ailabilit Cage t pe speed ad ustment factor footnotes does not mean that particular cage ariants are a ailable he designs and load ratings shown in this catalog are those being used at the time of publication he possibilit e ists that the designs and ratings ma be changed to reflect product impro ement or ma be procured from a different compan facilit o determine current conditions contact MRC Engineering Interchange information nterchanges pro ided in this catalog can pro ide a fast con ersion of manufacturer numbers to MRC e ui alents lease note that interchanges are made on an application basis and ma not be completel identical to MRC products Basic interchanges indicate o erall compatible design he interchange information was compiled using data a ailable at the time of publication howe er S SA nc and MRC assume no responsibilit or liabilit for errors or omissions Also bearing illustrations depict closure groo es howe er actual bearings ma or ma not ha e closure

9 Groo es WarrantyMRC warrants that products sold b it shall be free from defects in material and work manship MRC s obligation under this war rant is e pressl limited to furnishing without additional charge a replacement or at its option repairing or issuing credit for an product which shall within one ear from the date of sale be returned freight prepaid to the plant designated b an MRC representati e and which upon inspection is determined b MRC to be defecti e in materials or workman ship Complete information as to ser ice mounting and relubrication should accompan an product returned for inspection he pro isions of this warrant shall not appl to an MRC product which has been sub ected to misuse improper mounting assembl or lubrication or which has been repaired or altered if such repair or alteration in the udgement of MRC would ad ersel affect performance of the product his warrant is in lieu of all other warran ties e pressed or implied including an lim ited warrant of merchantabilit or fitness for a particular purpose and is also in lieu of all other obligations or liabilities on the

10 Part of MRC including an obligation or liabilit arising from contract tort or otherwise for damages and in no e ent shall seller be