Suffixes G - K

GSingle row angular contact ball bearing for universal matching. Two bearings arranged back-to-back or face-to-face will have a "Normal" axial clearance
G..Grease filling. A second letter indicates the temperature range of the grease and a third letter identifies the actual grease. The significance of the second letter is as follows:
E Extreme pressure grease
F Food compatible grease
H, J High temperature grease, e.g. –20 to +130 °C
L Low temperature grease, e.g. –50 to +80 °C
M Medium temperature grease, e.g. –30 to +110 °C
W, X Low/high temperature grease, e.g. –40 to +140 °C
A figure following the three-letter grease code indicates that the filling degree deviates from the standard: 1, 2 and 3 indicate smaller than standard, 4 to 9 a larger fill

Examples:
  • GEA Extreme pressure grease, standard fill
  • GLB2 Low temperature grease, 15 to 25% fill
GASingle row angular contact ball bearing for universal matching. Two bearings arranged back-to-back or face-to-face will have a light preload
GBSingle row angular contact ball bearing for universal matching. Two bearings arranged back-to-back or face-to-face will have a moderate preload
GCSingle row angular contact ball bearing for universal matching.
Two bearings arranged back-to-back or face-to-face will have a heavy preload
GJNGrease with a polyurea thickener of consistency 2 to the NLGI Scale for a temperature range –30 to +150 °C (normal fill grade)
GXNGrease with a polyurea thickener of consistency 2 to the NLGI Scale for a temperature range –40 to +150 °C (normal fill grade)
H
  1. Pressed snap-type steel cage, hardened
  2. Needle roller bearing without inner ring with reduced inside diameter (under rollers) tolerance; followed by tolerance limits in µ m, e.g. /H+20+27
HACase-hardened bearing or bearing components. For closer identification HA is followed by one of the following figures:
0 Complete bearing
1 Outer and inner rings
2 Outer ring
3 Inner ring
4 Outer ring, inner ring and rolling elements
5 Rolling elements
6 Outer ring and rolling elements
7 Inner ring and rolling elements
HBBainite-hardened bearing or bearing component. For closer identification HB is followed by one of the figures explained under HA
HCBearing or bearing components of ceramic. For closer identification HC is followed by one of the figures explained under HA
HEBearing or bearing component of vacuum remelted steel. For closer identification HE is followed by one of the figures explained under HA
HMMartensite-hardened bearing or bearing component. For closer identification HM is followed by one of the figures explained under HA
HTGrease fill for high temperatures (e.g. –20 to +130 °C). HT or a two figure number following HT identifies the actual grease. Filling degrees other than standard are identified by a letter or letter/figure combination following HTxx:
A Filling degree less than standard
B Filling degree greater than standard
C Filling degree greater than 70%
F1 Filling degree less than standard
F7 Filling degree greater than standard
F9 Filling degree greater than 70%

Examples:
  • HTB, HT22 or HT24B
HVBearing or bearing component of hardenable stainless steel. For closer identification HV is followed by one of the figures explained under HA
ISNeedle roller bearing with lubricating hole(s) in inner ring; a figure following IS identifies the number of holes
ISRNeedle roller bearing with annular groove and lubricating hole(s) in inner ring; a figure following ISR identifies the number of holes
JPressed steel cage, rolling element centred, unhardened; different designs are identified by a figure, e.g. J1
JHAPressed steel cage, hardened, outer ring centred
JRCage comprising of two flat washers of unhardened steel, riveted together
JWPressed steel cage, unhardened, welded
KTapered bore, taper 1:12
K30Tapered bore, taper 1:30
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