Axial Spherical Roller Bearing - Double row tapered roller bearings – CMC
Axial Spherical Roller Bearing - Double row tapered roller bearings – CMC Detail:
METERIALS
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.
PRECISION
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.
CLEARANCE
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.
CLEARANCE
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.
CLEARANCE
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 |
INSTALLATION
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.
Product detail pictures:
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