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Angular Contact Ball Bearings
Angular
Contact Ball Bearings is divided into angular contact ball
bearings, double row angular contact ball bearings and four point contact ball
bearings. It can bear radial and axial loads at the same time and can bear pure
axial load as well with higher limiting speeds. The capability of bearing axial
load is determined by the degree of contact angle. The bigger the contact angle
is, and the bigger the axial load can be born. The bearings should be used in
pair in general, in connection with installation in pairs, there are three
kinds of ways, back to back, face to face and in series.
The Meaning of Suffix
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1. Design A Non-filling
slot (Conrad type -3000, 5000 series) MRC. C. B 40° contact
angle BE 40° contact
angle, highcapacity, all ISO corners D Split inner
ring (3300 series) D MRC 29°
contact angle, 1/2 pair, duplex DU MRC 29°
contact angle andground for duplex mounting andzero preload/ clearance E Filling slot
(Max type – 5000 series) MRC. M. FF 2 Shields on
MRC DRACBB NR Snap ring
(3300,5000 series) N2 Locating slot
(QJ Series) R MRC single row
with 15° contact angle RD MRC single row
for duplex mounting and 15° contact angle 2RS1 Rubber seals
on both sides ZZ 2 rubber seals
on MRC DRACBB |
2Z Metal shields
on both sides (5000 series) 2. Clearance C2 Axial
clearance tighter than normal (3000,5000 and QJ series) C3 Axial
clearance greater than normal (3000, 5000 and QJ series) 7000 Series clearance* CA Modified for
duplex mounting with axial clearance < normal CB Modified for
duplex mounting with normal axial clearance CC Modified for
duplex mounting with axial clearance > normal CN Normal
clearance (3000, 5000 series) no symbol shown GA Modified for
duplex mounting with light preload GB Modified for
duplex mounting with medium preload
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GC Modified for
duplex mounting with heavy preload G… Special
preload, value in daN *If the above symbols from CA to G.. are not shown the
bearing is not modified for duplex mounting 3. Cage Design J Pressed steel
cage, ball centred. M Machined brass
cage, ball centred P Fibreglass
reinforced polyamide, ball centred Y Press brass
cage 4. Special Features HC4 Full ceramic
bearing HC5 Ceramic ball
set 5. Lubrication MT33 Medium
temperature Lithium grease, 74 cSt @ 40°C,range -30°C to + 120°C GJN Di-urea
hi-temp, 115cSt @ 40°C, range -40°C to +150°C
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