MPB bearing part

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MPB bearing part

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MPB bearing part

MPB bearing part number system

MPB bearing part number system

How to read miniature bearing numbers:

Example: S518MBH-5 DB2 P58 ZDM Q18 LOV2

S - Material stainless steel
518 - Bearing size (5/16 O.D. x 1/8 I.D.) The first digit is the O.D. size in sixteenths of an inch, the remaining digits give the bore size.
MB - Inner ring separable
H - Single shield
-5 - Bearing to meet ABEC-5P tolerances
DB2 - Duplexed back to back mounting under a 2 pound preload
P58 - Radial play of each bearing, before preloading of 0.0005 to 0.0008
ZDM - Grading of pairs having matched O.D. and bores
Q18 - Starting torque - 1800 rag-nun
LOV2 - Vacuum impregnate retainer with LO-2 lubrication

Special bearing configurations are indicated by an A, B, D, E as the case would be with a sequence number following. Numbers run from 1 to 999 then shift/to next letter in the alphabet.

Part number system

Prefix Suffix Definition
. . INCH, I.E: P35 DESIGNATES RADIAL PLAY OF -0.0003 TO 0.0005 INCHES
. 0 SHIELD OR SEAL ONV SIDE OPPOSITE FLANGE
. 1 ANTI-FRICTION BEARING MFG. ASSOCIATION CLASS 1
. 3 ANTI-FRICTION BEARING MFG. ASSOCIATION CLASS 3
. 5 ANTI-FRICTION BEARING MFG. ASSOCIATION CLASS 5P
. 7 ANTI-FRICTION BEARING MFG. ASSOCIATION CLASS 7P
. 9 ANTI-FRICTION BEARING MFG. ASSOCIATION CLASS 9P
. A PIVOT BEARING, THROUGH SHAFT
. C RADIAL, L-TYPE RETAINER.
. DB BACK-TO-BACK MOUNTING
. DF FACE-TO-FACE MOUNTING
. DT TANDEM MOUNTING
. DU UNIVERSAL MOUNTING
. E EXTENDED INNER RING
. F FLANGED OUTER RING
. H SINGLE SHIELD
. HH DOUBLE SHIELD
. LD NO LUBRICATION. DRY
. LG-10 ESSO STANDARD OIL ESSO RUST BAN 343 AN-C-124(3)
. LG-20 ESSO STANDARD OIL CO. BEACON 325
. LG-31 MPB MINAPURE
. LG-32 LEHIGH CHEMICAL CO. ANDEROL L-793
. LG-38 ESSO STANDARD OIL CO. ANDOCK B MIL-G-18709
. LG-39 ESSO STANDARD OIL CO. ANDOCK C
. LG-40 DOW CORNING DC-33 (SILICONE) (LIGHT)
. LGF FOLLOWED BY NUMBERS INDICATES SPECIFIC GREASE TO BE USED IN FILM GREASED BEARINGS .
. LGP FOLLOWED BY NUMBERS INDICATES THE SPECIFIC GREASE TO BE USED IN GREASE-PLATING SURFACES
. LO-1 ANDERSON OIL CO. WINDSOR LUBE L-245X MIL-L-6085
. LO-11 ESSO STANDARD OIL CO. ESSO AVIATION INST. OIL MIL-L-7870
. LO-12 TEXACO, INC. LOW TEMPERATURE OIL MIL-L-7870
. LO-13 SHELL OIL CO. AEROSHELL FLUID S3 (E) MIL-L-7870
. LO-14 LEHIGH CHEMICAL CO. ANDEROL L-281 ORD-14-0-20
. LO-2 LEHIGH CHEMICAL CO. ANDEROL L-401D MIL-L-6085
. LO-3 SHELL OIL CO. AEROSHELL FLUID 12 (E+W) MIL-L-6085
. LO-30 ECLIPSE-PIONEER P-LL
. LO-4 ECLIPSE-PIONEER P-10 MIL-L-6085
. LO-6 ESSO STANDARD OIL CO. UNIVIS P-38 MIL-L-6085
. LOG FOLLOWED BY NUMBERS INDICATES SPECIFIC OIL LUBRICANT TO BE USED, THEN CENTRIFUGED.
. LOV FOLLOWED BY NUMBERS INDICATES THE SPECIFIC LUBRICANT TO BE VACUUM IMPREGNATED INTO THE RETAINER. RETAINER MUST BE EITHER PAPER OR COTTON BASE PHENOLIC.
. LY-11 SUPERMIL M-100 (SILICONE)
. LY-13 DOW CORNING DC-44 (LIGHT) SILICONE, MIL-G-15719
. LY-15 GENERAL ELECTRIC GE VERSILUBE G-300
. LY-167 SUPERMIL A72832 (MIL-G-2 3827A)
. LY-17 TEXACO, INC. TEXACO UNITEMP 500
. LY-185 KG80
. LY-196 AEROSHELL 7 (MIL-G-2 382 7A)
. LY-1S9 KRYTOX 240 AC
. LY-21 DOW CORNING DC-510 (50) FLUID
. LY-22 DOW CORNING DC-200 (10) FLUID
. LY-231 MOBIL 28 (MIL-G-81322A)
. LY-24 ESSO STANDARD OIL TERESSO V-78
. LY-250 NRL MB-20B
. LY-252 SRG 160
. LY-254 XRL 743A
. LY-28 GENERAL ELECTRIC GE SILICONE OIL F44 (MIL-S-81087, TYPE II)
. LY-36 DOW CORNING DC-33 (FLUID) SILICONE
. LY-37 DOW CORNING DC-33 (MEDIUM) SILICONE
. LY-39 DOW CORNING DC-200 (12,500 FLUID)
. LY-4 ANDERSON OIL CO. WINDSOR LUBE LS-252 MIL-L-17353
. LY-4 8 1 PART GE VERSILUBE G-300 (LY-15) WITH 8 PARTS GE VERSILUBE F-50 (LY-5). APPLY WITH SYRINGE.
. LY-4 9 LEHIGH CHEMICAL CO. ANDEROL L-451
. LY-40 DOW CORNING DC-510 (500) FLUID
. LY-41 LEHIGH CHEMICAL CO. ANDEROL L-423
. LY-5 GENERAL ELECTRIC GE VERSILUBE F-50
. LY-5 3 DOW CORNING DC-200 (60,000 CS)
. LY-51 DOW CORNING DC-510 (1000 CS)
. LY-52 DOW CORNING DC-510 (100,000 CS)
. LY-60 DOW CORNING FS 1265 FLUID
. LY-7 DOW CORNING DC-200 (20) FLUID
. M HIGH SPEED, NON-SEPARABLE (REINFORCED PHENOLIC SEPARATOR)
. MB HIGH SPEED, INNER RING SEPARABLE (REINFORCED PHENOLIC SEPARATOR)
. MC HIGH SPEED, CONRAD-TYPE
. MCD HIGH SPEED, CONRAD-TYPE MINAPAR RETAINER (PLASTIC)
. MCJ SELF LUBRICATING, CONRAD TYPE
. MCK HIGH SPEED, CONRAD-' TYPE MINSPAR II RETAINER (PLASTIC)
. MR HIGH SPEED, FULL FACE
. N NARROWER THAN STANDARD
. P FOLLOWED BY TWO NUMBERS INDICATES RADIAL PLAY IN TEN THOUSANDTHS OF AN
. PR PIVOT BEARING, CLOSED END
. Q FOLLOWED BY A NUMBER INDICATES PEAK STARTING TORQUE IN HUNDREDS OF MG-MM. (EXAMPLE: Q15 INDICATES BEARING WITH 1500 MG-MM PEAK STARTING TORQUE. )
. R RIBBON RETAINER
. ST TEFLON SLUG SEPARATOR
. T THRUST BEARING
. V FOLLOWED BY A NUMBER INDICATES PEAK RUNNING TORQUE IN HUNDREDS OF RAG-NUN. (EXAMPLE: V13 INDICATES A BEARING WITH PEAK RUNNING TORQUE OF 1300 MG-MM.)
. W WIDER THAN STANDARD
. Z SINGLE SEAL
. ZD-1-1 BORE TOLERANCE +0.0000 - .0001 O.D. TOLERANCE +0.0000 - .0001
. ZD-1-2 BORE TOLERANCE +0.0000 - .0001 O.D. TOLERANCE -0.0001 - .0002
. ZD-2-1 BORE TOLERANCE -0.0001 - .0002 O.D. TOLERANCE +0.0000 - .0001
. ZD-2-2 BORE TOLERANCE -0.0001 - .0002 O.D. TOLERANCE -0.0001 - .0002
. ZD-A-A BORE TOLERANCE +0.000000 - .000050 O.D. TOLERANCE +0.000000 - .000050
. ZD-A-B BORE TOLERANCE +0.000000 + .000050 O.D. TOLERANCE -0.000050 - .000100
. ZD-A-C BORE TOLERANCE +0.000000 - .000050 O.D. TOLERANCE -0.000100 - .000150
. ZD-A-D BORE TOLERANCE +0.000000 - .000050 O.D. TOLERANCE -0.000150 - .000200
. ZD-B-A BORE TOLERANCE -0.000050 - .000100 O.D. TOLERANCE +0.000000 - .000050
. ZD-B-B BORE TOLERANCE -0.000050 - .000100 O.D. TOLERANCE -0.000050 - .000100
. ZD-B-C BORE TOLERANCE -0.000050 - .000100 O.D. TOLERANCE -0.000100 - .000150
. ZD-B-D BORE TOLERANCE -0.000050 - .000100 O.D. TOLERANCE -0.000150 - .000200
. ZD-C-A BORE TOLERANCE -0.000100 - .000150 O.D. TOLERANCE +0.000000 - .000050
. ZD-C-B BORE TOLERANCE -0.000100 - .000150 O.D. TOLERANCE -0.000050 - .000100
. ZD-C-C BORE TOLERANCE -0.000100 - .000150 O.D. TOLERANCE -0.000100 - .000150
. ZD-C-D BORE TOLERANCE -0.000100 - .000150 O.D. TOLERANCE -0.000150 - .000200
. ZD-D-A BORE TOLERANCE -0.000150 - .000200 O.D. TOLERANCE +0.000000 - .000050
. ZD-D-B BORE TOLERANCE -0.000150 - .000200 O.D. TOLERANCE -0.000050 - .000100 .
. ZD-D-C BORE TOLERANCE -0.000150 - .000200 O.D. TOLERANCE -0.000100 - .000150
. ZD-D-D BORE TOLERANCE -0.000150 - .000200 O.D. TOLERANCE -0.000150 - .000200
. ZDM GRADED FOR PAIRS OF BEARINGS HAVING MATCHED O.D.'S AND BORES
. ZO GRADED O.D.'S ONLY
. ZZ DOUBLE SEALED BEARING
N . BERYLLIUM COPPER MATERIAL (NON-MAGNETIC BEARINGS)
S . AISI 440C STAINLESS STEEL MATERIAL


 

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