Technology & Services

SKET Tapered Roller Bearing

Standard
Metric tapered roller bearing DIN ISO355 and DIN720.
Type
single-row tapered roller bearing, double-row tapered roller bearing and four-row tapered roller bearing
Model
SKET tapered roller bearings model accord with DIN720 standard
Tolerance
SKET basic type tapered roller bearing use normal tolerance (tolerance grade PN). The 320X, 329, 330, 331 and 332 series tapered roller bearings which hole diameter is less than 200mm have smaller width tolerance, the grade is P6X.
Clearance
Tapered roller bearing axial clearance is set by adjusting another paired using bearing.
Speed
under the suitable working conditions, the bearing speed maybe higher than reference speed and near to limited speed. The special working environment should be considered when confirm the allowed speed.
Bearing assembly
The bearing performance could be affected because of wrong assemble process and carelessly assemble.
In order to bring the bearing working life up to maximum, the cleanness must be paid more attention during the bearing assembly.
The bearings are coated with antirust in order to avoid rusting during transit and in stock. This antirust coating can not lubricate the bearings, but it can mix with other lubricant and need not to cleat it when the bearing is using.
The bearing surface can not be cut or damaged during assembly, or else, it will cause axial adjustment changed during the bearing working.

About more tapered roller bearing technology information please contact us.

SKET Bearing Material and Accuracy

The bearing steel chemical composition
Chemical composition (%)
Steel No. C Mn Si Cr S P Ni Cu
Grc15 0.95~1.05 0.2~0.4 0.15~0.35 1.30~1.65 0.02 0.027 0.3 0.25
The bearing steel No. contrast
China GB/T307-94 ISO USA AISI Germany DIN Japan JIS
Gcr15 683XVII1 52100 100Cr6 SUJ2
The bearing accuracy contrast
Country Standard Accuracy Grade
China GB307.1 0 6 5 4 2
ISO ISO 0 6 5 4 2
Sweden SKF P0 P6 P5 P4 P2
Germany DIN P0 P6 P5 P4 P2
Japan JIS P0 P6 P5 P4 P2
U.S.A ANSI ABEC1 ABEC3 ABEC5 ABEC7 ABEC9

SKET Deep Groove Ball Bearing Clearance

The radial clearance of deep groove ball bearings is made according to ISO5753.

d (mm) C2 C0 C3 C4 C5
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
2.5<d≤6 0 7 2 13 8 23 - - - -
6<d≤10 0 7 2 13 8 23 14 29 20 37
10<d≤18 0 9 3 18 11 25 18 33 25 45
18<d≤24 0 10 5 20 13 28 20 36 28 48
24<d≤30 1 11 5 20 13 28 23 41 30 53
30<d≤40 1 11 6 20 15 33 28 46 40 64
40<d≤50 1 11 6 23 18 36 30 51 45 73
50<d≤65 1 15 8 28 23 43 38 61 55 90
65<d≤80 1 15 10 30 25 51 46 71 65 105
80<d≤100 1 18 12 36 30 58 53 84 75 120
100<d≤120 2 20 15 41 36 66 61 97 90 140