files/Katalogbilder/fudabearings.jpg

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Welcome to our ONLINE Catalog "Bearings",

we have carefully checked all data. However, we cannot take any responsibility for eventual mistakes.

If you have any questions please contact us:
mail@roeco.at or phone: + 43-1- 6167516 / 38 Mrs. Krejcy

 
M a t e r i a l
 

Material No. 

Chemical composition in % 

equivalent
C  Si  Mn  P  S  Cr  o

Chromium steel

SUJ2 

0,95~1,10

0,15~0,35

<=0,50

<=0,025

<=0,025

1,30~1,60

<=0,08

SAE 52100

Stainless steel

SUS 440C

0,95~1,20

<=1,00

<=1,00

<=0,040

<=0,030

16,00~18,00

<=0,75

AISI 440 C

 

Radial clearance miniature bearings
(bearings with an inner diameter < 10 mm)
  MC1  MC2  MC3
(Standard) 		 MC4  MC5  MC6

 

min

 max min max min max min max min max min max
Clearance (µm)

  0

 5

  3

 8

  5

 10

  8

 13

 13

 20

 20

 28

 

Radial clearance of standard ball bearings
(bearings with an inner diameter > = 10 mm)

inner diameter
d (mm)

 C2 without suffix
(standard)		 C3 C4 C5
above including min max min max min max min max min max
10 (exactly)   0 7 2 13 8 23 14 29 20 37
10 18 0 9 3 18 11 25 18 33 25 45
18 24 0 10 5 20 13 28 20 36 28 48
24 30 1 11 5 20 13 28 23 41 30 53
30 40 1 11 6 20 15 33 28 46 40 64
40 50 1 11 6 23 18 36 30 51 45 73

 

Bearing Seals

ZZ
steel shields

 Non-contact shield pressed into outer ring. Very little grease leakage and low ingress of contaminants.

ZZS
steel shields
with snap ring

 Non-contact shield retained in outer ring. Low ingress of contaminants. Mainly used for smaller or narrower bearings.

TTS
teflon seal
with snap ring

 Teflon seal reinforced with glass fibre is retained in outer ring by snap ring. Low ingress of contaminants. Mainly used for smaller and narrower bearings. Seal can flex to accomodate internal pressure changes.

2RS
contact
rubber seal

 Rubber seal fitted into outer ring. Light contact with inner ring, retains grease and prevents ingress of external contaminants.

2RU
non contact
rubber seal

 Non-contact rubber seal fitted into outer ring, still provides effective sealing.

 

Pre- and Suffixes used
Prefix Suffix Used for Explanation Example
         
  A Angular contact bearing Contact angle 30° 7210 oder 7210 A
  +H All bearings Adapter sleeve 23030EK+AH
  AV2 All bearings greased with Shell Alvania No. 2 608 AV2
  AF2 All bearings greased with Shell Aero Fluid 12 (Oil) 608 AF2
  B Angular contact bearings Contact angle 40° 7203 B
  C Angular contact bearings Contact angle 13° 7206 C
  C2 All bearings Radial clearance less than normal 6201 C2
  C3 All bearings Radial clearance more than normal 6202 C3
  C4 All bearings Radial clearance more than C3 22256E C4
  CM Radial ball bearings Electric motor quality 6202-2NK CM
  DDU Radial ball bearings Contact seals on both sides 6206 2DU
  DU Radial ball bearings Contact seal on one side 6304 DU
  E Roller bearings Heavy duty 23048 E
F   Radial ball bearings Flanged F 6800
FR   Miniature bearings Flanged inch type miniature bearing FR 166
E J Tapered roller bearings Heavy duty E32206J
HR   Tapered roller bearings Tapered roller bearings HR 30202
  K All bearings Tapered bore, cone 1/12 NN3010 K
  K30 All bearings Tapered bore, cone 1/30 24132EK30
  M, MY All bearings Brass cage 23060EM, 23060EMY
  MC1 Miniature bearings Radial clearance less than MC2 627 MC1
  MC2 Miniature bearings Radial clearance less than MC3 696 MC2
  MC3 Miniature bearings Standard Radial clearance bei Miniaturlagern 625 MC3
  MC4 Miniature bearings Radial clearance more than MC3 686 MC4
  MC5 Miniature bearings Radial clearance more than MC4 623 MC5
  MC6 Miniature bearings Radial clearance more than MC5 608 MC6
  N All bearings Groove in the outer ring 6025 N
  NR All bearings Groove and ring in the outer ring 6205 NR
  NK, 2NK Radial ball bearings Non-contact rubber seal 6203-2NK
  NSL,NSG Radial ball bearings Contact rubber seal on one side 6203NSL,NSG
  2NSL,2NSG Radial ball bearings Contact rubber seals on both sides 6203-2NSL
  P6 All bearings Tolerance class P6 6200 P6
  P5 All bearings Tolerance class P5 3020 P5
  P4 All bearings Tolerance class P4 7205C P4
  PS2 All bearings Greased with Multtemp PS 2 685 PS2
R   Miniature bearings Inch type R4, R156
  RU, 2RU Radial ball bearings Non-contact rubber seal 608 2RU
S, SS H Ball bearings Stainless S 6202, 6202 H
  T All bearings Plastic cage 6204 T
  TG Sperical ball bearings Polyamid cage 1208TG
  TTS Radial ball bearings Teflon seals with snap ring on both sides 608 TTS
  TW Radial ball bearings Plastic snap cage 684 TW
  U Axial ball bearings With aligning seat 53218U
  V Radial ball bearings Non-contact seal on one side 6203V
  V All bearings Full complement 6204 V
  VV Radial ball bearings Non contact seals on both sides 6203VV
  VA Radial ball bearings Stainless 6204 VA
  W Radial ball bearings Steel snap cage 684 W
  W20 All bearings Regreasing holdes in the outer ring 23130EW20
  W33 All bearings Regreasing holse and groove in the outer ring 23130EW33
  Z,ZG Radial ball bearings Steel shield on one side 6203Z, 6203ZG
  ZZ,ZZG Radial ball bearings Steel shields on both sides 6203ZZ, 6203ZZG
  ZS Radial ball bearings Special steel shield on one side 6201ZS
  ZZS Radial ball bearings Special steel shields on both sides 6201ZZS