Bearing Guide

A list of replacement bearings for machines I have owned, or verified.

Craftsman 103 Lathe (1958)
6203-3/4ZZ metric bearing with 3/4" bore

Comet II Lathe
6005ZZ (2 each)

Delta 46-111 Lathe
Short answer: 6205ZZ
Long answer is the original bearing was MRC 205FSF (2 each)
But MRC replaced that bearing with the 87xxx series
205FSF = 87505, 25mm x 52mm x 5/8" (mixed unit bearing)
I found it more economical to buy a 6205ZZ and that would be my recommendation.

Delta 46-460 Midi lathe
? I haven't pulled the bearings yet

Delta 930 Lathe
Timken 07204 cup
Timken 07100 cone
This is a 2 part tapered roller bearing

Rikon 70-100 Lathe
6005RS 25x47x12 Sealed Ball

Rikon 70-220 VSR Lathe
6204 & 6005, 1 each

Delta/Rockwell 14" Band Saw
Bearing 6202Z, 2 each, top wheel
Bearing 6204Z, 2 each, bottom wheel

Porter Cable 7301 Laminate Trimmer
NSK 6002DW
NTN 608Z

Porter Cable 100M Router
NTN 608Z
?? MRC WC88038 (unverified)

Quality Bearing Manufacturers

  • FAG / INA
  • NTN
  • NSK
  • SKF
  • Timken / Fafnir
  • Koyo (JTEKT)
  • Nachi

Bearing Suffixes

RS/2RS = rubber shield, superior dust protection, higher friction
DW = thin rubber shield, excellent dust protection, medium friction
Z/ZZ/2Z = metal shield, medium dust protection, low friction
FSF = One felt seal and one shield

Note, there is such a thing as mixed unit bearings that are measured both in millimeters and inches. Usually the bore is in inches and outside is in millimeters. Why such a thing was ever invented I don't know but they do exist. 

Sources for bearings: I buy most of my bearings from ebay. I can usually find overstock or NOS (New Old Stock) higher quality bearing for a lower price, just be sure to buy from a reputable seller. I have no preference on manufacturer but prefer to buy American made, Germany, Japan, anywhere else, in that order. I'm not a believer in buying super cheap Chinese bearings for machinery, mostly because I don't like replacing bearings. I would rather spend a little more and do it once than have to redo it every few years.