Double row tapered roller bearings

The ability of single-row tapered roller bearings to bear axial load depends on the contact angle, that is, the outer ring raceway angle. The greater the angle, the greater the axial load capacity. The most used tapered roller bearings are single row tapered roller bearings. In the front wheel hub of the car, a small-sized double-row tapered roller bearing is used. Four-row tapered roller bearings are used in heavy machines such as large cold and hot rolling mills.
send email to us

Products Details

country China USA Germany japan
Bearing Steel NO. GCr15 (ANSI)52100 (DIN)100Cr6 (JIS)SUJ2

Table 1

The rings and rollers of CMC bearings are made of refined high carbon-chrome bearing steel-GCr15. ( The contrast of Bearing Steel No.of each country.See Table 1.) The cages are punch-pressed from super quality cold rolling steel sheet or nylon cages.The seals are hot-pressed from oil-resistant bone-N rubber with phosphatizing steel skeleton.
Series Standard Bearing Class Designations
Inch ANSI/ABMA std.19.2 4 2 3 0 00
Metric GB/T307.1 0 6X 5 4
ISO 0 6X 5 4
ANSI/ABMA std.19.1 K N C B A
DIN 0 6X 5 4
J IS 0 6X 5 4

Table 2

The precision of inch series bearing is classified in 4.2.3,0 and 00 five classes.0,6/6X、5 and 4 apply to metric series bearings. The relationship of classes to ISO tolerance classes, etc, see Table 2.
Bore Diameter d mm Group l Group 2 Normal Group 3 Group 4 Groep 5
over to min max min max min max min max min max min max
- 30 0 10 10 20 20 30 40 50 50 60 70 80
30 40 0 12 12 25 25 40 45 60 60 75 80 95
.40 50 0 15 15 30 30 45 50 65 65 80 90 110
50 65 0 15 15 30 30 50 50 70 70 90 90 120
65 80 0 20 20 40 40 60 60 80 80 110 110 150
80 100 0 20 20 45 45 70 70 100 100 130 130 170

Table 3

The radial clearances of tapered bearings are divided into six groups as shown in Table 3. Special radial clearance or axial clearance requirement could be made as specified in orders.
Type of Grease No Average Drops C (F) Working Point at 25℃ (77°F) Working T. C Remarks
1Shell
Alvan iaR Grease R2 185(365) 265-295 -30~12( Lithium Grease
R3 185(365) 220-250 -30~120
Al vania EP Grease EP1 180(356) 310-340 Lithium EP Grease
EP2 185(365) 265-295 -25~110
2. Mobil oil
Mobil Grease 22 192(378) 274 -40~120
EP2 185(365) 265-295 -25~110
3.Esso
Andok C 260(500) 190-210 -30~150
Beacon 325 190(374) 280 -55~120

Table 4

The main purposes of bearing lubrication are to prevent metallic contact between the rolling elements, raceways, and cage, and also to prevent the bearing from corrosion and wear. Additional functions are sealing and cooling of the bearing. Bearing may be lubricated with grease or oi,in special cases with a solid lubricant,the choice of which depends primarily on the temperature range, operating speeds, and loading conditions of the bearings concerned. All lubricants must be changed from time to time because their properties deteriorate as a result of aging and contamination of the lubricants. The functions for both grease and oil lubrication are given in Table4.
 No. Bearing   No.  Boundary Dimensions
d D B T C Kg Cr Cor
mm
1 2558/2523D 30.162 69.85 25.357 66.675 57.15 1.1612 122.3 170.3
2 385/384D 55 100 21.946 52.388 42.862 1.465 138.9 205.8
3 F15015 41 68 20 40 35 0.43 76.0 119.6
4 F15130 42 80 19 38 38 0.802 95 128.7
5 IR2220 25 52 18.5 37 37 0.365 60.7 78.6
6 IR2221 25 52 21.5 43 43 0.41 60.7 78.6
7 IR2222 25 55 21.5 43 43 0.496 74.5 97.8
8 IR2223 25 52 18.5 37 37 0.365 60.7 78.6
9 JR387037 38 70 18.5 37 37 0.544 64.3 94.9
10 JRM3535A/65XD 35 65 17.5 35 35 0.508 61.3 87.1
11 JRM3535A/65XDT 35 65 17.5 35 35 0.533 61.3 87.1
12 JRM3535A/65XD-T 35 65 17.5 35 35 0.525 61.3 87.1
13 JRM3939/JRM3968XD 39 68 18.5 37 37 0.522 64.3 94.9
14 T255545 25 55 22.5 45 45 0.5084 66 95.7
15 T255545A 25 55 22.5 45 45 0.5084 66 95.7
16 T255548 25 55 24 48 48 0.5246 66.0 95.7
17 T255548A 25 55 24 48 48 0.5246 66.0 95.7
18 T256045 25 60 22.5 45 45 0.6662 66.0 95.7
19 T256045A 25 60 22.5 45 45 0.6662 66.0 95.7
20 T256248 25 62 24 48 48 0.5941 93.4 125.1
21 T256248A 25 62 24 48 48 0.5941 93.4 125.1
22 T275343 27 53 21.5 43 43 0.4383 52.1 74.8
23 T295337 29 53 18.5 37 37 0.343 52.09 74.8
24 T295337C-V 29 53 18.5 37 37 0.3424 52.09 74.8
25 T306248 30 62 24 48 48 0.5121 93.4 125.1
26 T346437 34 64 18.5 37 37 0.546 72.7 106.3
27 T356437 35 64 18.5 37 37 0.539 72.7 106.3
28 T356437B 35 64 18.5/24.1 42.6 37 0.5603 72.7 106.3
29 T356848 35 68 24 48 48 0.7784 96.2 138.2
30 T397237 39 72 18.5 37 37 0.662 73.0 105.0
31 T407237 40 72 18.5 37 37 0.644 73 105
32 T407237A 40 72 18.5 37 37 0.6592 68.1 102.9
33 T408045 40 80 22.5 45 44 0.97 110.3 143
34 T427639 42 76 19.5 39 39 0.76 95.3 133.9
35 T428038 42 80 19 38 38 0.8362 95 128.7
36 T458551 45 85 25.5 51 51 1.2686 99.28 144.7
37 T458551A 45 85 25.5 51 51 1.275 99.3 144.7
38 T478858 47 88 28.75 57.5 57.5 1.4928 126.8 191.9
39 T498448 49 84 24 48 48 1.05 107.2 168.6
40 T508454 50 84 27 54 54 1.178 107.2 168.6
41 U17598111
42 FC41394
43 T549651 54 96 25.5 51 51 1.4402
44 445620 35 65 17.5 35 35 0.512 71.7 100
45 T306251 30 62 51 51 51 0.704 93.4 125.1
46 T408045D 40 80 22.5 45 44 0.97 110.3 143
47 T408045KW 40 80 22.5 45 44 0.97 110.3 143
The following information is provided by Kuaiyiyou Automation Selection Encyclopedia. Adjusting the axial clearance For the installation axial clearance of tapered roller bearings, you can use the adjustment nut on the journal, the adjustment washer and the thread in the bearing seat hole, or use the pretension spring to adjust. The size of the axial clearance is related to the arrangement of the bearing, the distance between the bearings, and the material of the shaft and the bearing seat, and can be determined according to the working conditions. For tapered roller bearings with high loads and high speeds, when adjusting the clearance, the effect of temperature rise on the axial clearance must be considered, and the reduction in clearance caused by the temperature rise must be estimated, that is, the axial clearance It needs to be adjusted to be larger. For low-speed and vibration-bearing bearings, clearance-free installation or preload installation should be adopted. Its purpose is to make the rollers and raceways of tapered roller bearings have good contact, and the load is evenly distributed, and to prevent the rollers and raceways from being damaged by vibration and impact. After adjustment, the size of the axial clearance is checked with a dial indicator. Installation of four-row tapered roller bearings (installation of roller bearings): 1. The fit between the inner ring of the four-row tapered roller bearing and the roll neck is generally with clearance. When installing, put the bearing into the bearing box first, and then put the bearing box into the journal. The outer ring of the two- and four-row tapered roller bearing also adopts a dynamic fit with the bearing box hole. First, install the outer ring A into the bearing box. The word {HotTag} is printed on the outer ring, inner ring, and inner and outer spacers when leaving the factory, and must be installed in the bearing box in the order of the characters and symbols during installation. Can not be interchanged arbitrarily to prevent the change of bearing clearance. 3. After all the parts are installed in the bearing box, the inner ring and the inner spacer, and the outer ring and the outer spacer are axially abutted. 4. Measure the gap width between the end face of the outer ring and the bearing box cover to determine the thickness of the corresponding gasket. Multi-sealed bearings use the post code XRS mark.

Previous:Double row tapered roller bearings

Next:Factory direct Tapered-roller manufacturer for superior quality products

Tapered roller thrust bearings, Tapered Roller Bearing Seals, Ring For Sealing A Pipe Joint, Roller Wheel Bearings, Precision bearings, Guide Bearing, Tapered bearings, Double Row Ball Bearing, Large Diameter Roller Bearings, Sealed Ball Bearing,

Featured Products

Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours