Page 247 - Rollingbearings
P. 247

Designs and variants
                                                                                                          Table 2
                                                                                                                     1
            SKF standard greases for capped single row deep groove ball bearings made of carbon chromium steel
            Bearings in         SKF standard greases in bearings with outside diameter
            diameter series
                                D ≤ 30 mm                     30 < D ≤ 62 mm  D > 62 mm
                                d < 10 mm     d ≥ 10 mm

            8, 9                LHT23         LT10            MT47            MT33
            0, 1, 2, 3          MT47          MT47            MT47            MT33







                                                                                                           Table 3
            Technical speciications of SKF standard and special greases for capped deep groove ball bearings
            Grease  Temperature range 1)                 Thickener  Base    NLGI    Base oil viscosity [mm 2 /s] Grease
                                                                 oil type  grade  at 40 °C  at 100 °C  performance
                                                                                 (105 °F)  (210 °F)  factor
                     –50  0    50  100  150  200  250 °C                                            (GPF)

            MT33                                         Lithium   Mineral  3    100     10         1
                                                         soap
            MT47                                         Lithium   Mineral  2    70      7,3        1
                                                         soap

            LT10                                         Lithium   Diester  2    12      3,3        2
                                                         soap
            LHT23                                        Lithium   Ester  2–3    27      5,1        2
                                                         soap
            LT                                           Lithium   Diester  2    15      3,7        1
                                                         soap
            WT                                           Polyurea  Ester  2–3    70      9,4        4

            GJN                                          Polyurea  Mineral  2    115     12,2       2


            HT                                           Polyurea  Mineral  2–3  96      10,5       2

            VT378                                        Aluminium  PAO   2      150     15,5       – 2)
                                                         complex
                                                         soap
            GFJ                                          Aluminium  Synthetic   2  100   14         1
                                                         complex   hydro-
                                                         soap    carbon
            GE2                                          Lithium   Synthetic  2  25      4,9        2
                                                         soap

                     –60  30  120  210  300  390  480 °F











            1)   Refer to the SKF trafic light concept (page 117)
            2)  For bearings illed with VT378 grease, use the scale corresponding to GPF = 1 and multiply the value obtained from diagram 1, page 246, by 0,2

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