The Quality Management System of Lewis International Bearing Co Pty Ltd is based upon the requirements of
AS/NZ ISO 9001:2015

BEARING MARKINGS AND COMPARISONS LIST
   

RHP	HOFFMAN	SKF
1/2	5	4
5/8	7	5
3/4	8	6
7/8	9	7
1	10	8
1 1/8	11	9
1 1/4	12	10
1 3/8	12 1/2	11
1 1/2	13	12
1 5/8	13 1/2	13
1 3/4	14	14
1 7/8	14 1/2	15
2	15	16
2 1/4	16	18
2 1/2	17	20
2 3/4	18	22
3	19	24
3 1/4	19 1/2	26
3 3/8	19 3/4	27
3 1/2	20	28
3 3/4	20 1/2	30
4	21	32
4 1/4	21 1/2	34
4 1/2	22	36
4 3/4	22 1/2	38
5	23	40
5 1/2	23 1/2	44
6	24	48
6 1/2	24 1/2	52
7	25	56
7 1/2	25 1/2	60
8	26	64
8 1/2	26 1/2	68
9	27

IMPERIAL DEEP GROOVE - CONVERSION CHART ( EE SERIES )
 

BORE I.D.	S	R	EE
1/8		2	0
3/16		3	1
1/4	1	4	2
3/8	3	6	3
1/2	5	8	4
5/8	7	10	5
3/4	8	12	6
7/8	9	14	8
1	10	16	9
1 1/8	11	18	10
1 1/4	12	20	11
1 3/8	12 1/2	22	12
1 1/2		24	13

SLIDING PARTS PREFIX IDENTIFICATION
 

MARKING 1	MARKING 2	MEANING	MARKING 3	MARKING 4
METRIC			IMPERIAL	IMPERIAL
N	R	Loose Outer	LRJ	MJR
NU	RE	Loose Inner	LLRJ	MMRJ
NJ	RP	One Lip Inner	LLRJA	MMRJA
NF	RL	One Lip Outer	LRJA	MRJA
NP	RD	Ring Outer	LRJB	MRJB
NUP	RF	Ring Inner	LLRJB	MMRJB
	RLL	Fixed	LLRJN	MMRJN

AUTOMOTIVE TAPER ROLLER BEARING SETS
 

SIZE	BEARING NUMBERS
Set A	LM 11949 / 10
Set B	LM 67048 / 10
Set C	L 44649 / 10
Set D	LM 11749 / 10
Set E	LM 12749 / 10
Set F	L 68149 / 10
Set H	L 45449 / 10

SUFFIX ON BALL OR ROLLER BEARING
 

SUFFIX	MEANING
M	Brass Cage
C3, C4, C5 etc.	Clearance of tolerance
W33	Oil Hole and Groove on O.D. on Bearing
K	Taper Bore, to accommodate an Adaptor
Z	One Metal Shield
ZZ	Two Metal Shields
RS	One Rubber Seal
2RS	Two Rubber Seals
NR	Snap Ring
N	Groove

RHP TO SKF BALL AND ROLLER BEARING
PREFIX CONVERSION CHART

Note: For quick conversions, SKF bearings use 8 numbers to the RHP inch ( eg an RHP 1” bearing is equivalent to an SKF 8, or RHP 1/2” = SKF 4 )

RHP	SKF
NLJ	RL
NMJ	RM
LRJ	CRL
MRJ	CRM
LRJA	CFL
MRJA	CFM
LJ	RLS
MJ	RMS
LJT	ALS
MJT	AMS