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Single row cylindrical roller bearings supplemental type suffix

Date锛2013-09-10 9:23:26

Used to identify the single row cylindrical roller bearings certain characteristics suffix is explained below.
B20 reduced width tolerance
CN ordinary level radial internal clearance ; generally only used in conjunction with the following letter , these letters reduce or offset clearance range .
F reduce or offset clearance range including the actual clearance plus the top fourth part of a larger clearance under the bottom of the fourth part of the range .
H reduced clearance range , with the actual clearance corresponds to the upper half of the range .
L reduced clearance range , with the actual clearance corresponds to the lower half of the range .
M reduced clearance range , with the actual clearance range of two parts corresponding to the middle of the quarter .
R reduced clearance range , with the 1981 standard requirements of ISO 5753 "Pairing circle" corresponds .
The same letter also used in conjunction with the following clearance level : C2, C3, C4 and C5
C2 Radial internal clearance smaller than normal level
C3 radial internal clearance greater than normal level
C4 Radial internal clearance greater than C3
C5 Radial internal clearance greater than C4
D modified internal design
EC optimal interior design, including more and / or larger rollers and modified roller / end flange contacts
HA3 inner surface hardening
HB1 bainite hardened inner and outer rings
HN1 through a special surface treatment of the inner and outer
J pressed steel cage to roller centering unhardened
K Tapered bore , taper 1:12
M double components machined brass cage , roller centered in
MA dual components machined brass cage , outside the delineation of the heart
MA MAS and the same, but the guide surface of a lubrication groove
MB dual components machined brass cage , delineated within the heart
MBS and MB the same, but the guide surface of a lubrication groove
ML -piece molding processing window type brass cage , outer ring centered within a circle or
MP -piece window -type brass cage with milling, broaching cutter slots or grooves , or outer ring centered within
MPS and MP same, but the guide surface of a lubrication groove
MR integral molding processing window type brass cage , roller centered in
N outer diameter with a snap ring groove
NR outer ring with snap ring groove with snap ring
N1 an outer side with a positioning groove
N2 an outer side with two positioning grooves spaced 180 degrees
P injection molded glass fiber reinforced polyamide 66 cage, roller centered in
PH molding polyether ester ketone (PEEK) cage to the centering rollers
PHA molding polyether ester ketone (PEEK) cage other than delineated heart
P5 dimensions and running accuracy to ISO tolerance class 5
P6 dimensions and running accuracy to ISO tolerance 6 standard
S1 by dimensionally stable treatment, can be used for temperatures up to 200 degrees Celsius bearing ring
S2 The dimensionally stable treatment, can be used for temperatures up to 250 degrees centigrade bearing ring
TN9 Injection molded glass fiber reinforced polyamide 66 cage
VA301 bearings for railway vehicle traction machine
VA305 VA301 + special inspection procedures
VA3091 VA301 + VL0241
VA350 railway axle bearings
VA820 comply with the EN 12080 standard in 1998 a railway axle bearings
VC025 with special wear-resistant bearing raceways for the serious pollution of the environment applications
VL0241 alumina coating on the outer surface of the outer ring , resistant up to 1000 volts dc
VL2071 alumina coating on the outer surface of the inner resistance, up to 1000 volts dc
VQ015 coronal raceways in the inner zone , allowing the increase of misalignment

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