011.012.
AOXUAN
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Slewing bearings comprise an inner ring and an outer ring, one of which usually incorporates a gear. Together with attachment holes in both rings, they enable an optimized power transmission with a simple and quick connection between adjacent machine components. The bearing raceways, in conjunction with the rolling elements and cages or spacers, are designed to accommodate loads acting singly or in combination, and in any direction.
According to the stress conditions, the upper and lower rows of steel balls with different diameters are arranged. This open type assembly is very convenient. The bearing angle of the upper and lower circular arc raceways is 90 °, which can withstand large axial force and tipping moment.
No. | Type | Configuration & Structural Dimension | Mounting Hole Dimension | Gear Parameter |
Weight | |||||||||||||||||||
010 | 011,012 | 013,014 | D | d | H | H1 | h | D3 | d1 | n1 | D1 | D2 | n | Type 0 | Type1,2,3 | b | m | 011,012 | 013,014 | |||||
Steel Ball Spec. DL | φ | M | T | z | da | z | da | kg | ||||||||||||||||
1 | 010.20.200 | 011.20.200 | / | 280 | 120 | 60 | 50 | 10 | 201 | 199 | 2 | 248 | 152 | 12 | Φ16 | 14 | 28 | 40 | 3 | 98 | 300 | / | / | 20 |
2 | 010.20.224 | 011.20.224 | / | 304 | 144 | 60 | 50 | 10 | 225 | 223 | 2 | 272 | 176 | 12 | Φ16 | 14 | 28 | 40 | 3 | 105 | 321 | / | / | 22 |
3 | 010.20.250 | 011.20.250 | / | 330 | 170 | 60 | 50 | 10 | 251 | 249 | 2 | 298 | 202 | 18 | Φ16 | 14 | 28 | 40 | 4 | 86 | 352 | / | / | 25 |
4 | 010.20.280 | 011.20.280 | / | 360 | 200 | 60 | 50 | 10 | 281 | 279 | 2 | 328 | 232 | 18 | Φ16 | 14 | 28 | 40 | 4 | 94 | 384 | / | / | 28 |
5 | 010.25.315 | 011.25.315 | 013.25.315 | 408 | 222 | 70 | 50 | 10 | 316 | 314 | 2 | 372 | 258 | 20 | Φ18 | 16 | 32 | 50 | 5 | 85 | 435 | 40 | 190 | 43 |
6 | 010.25.355 | 011.25.355 | 013.25.355 | 448 | 262 | 70 | 50 | 10 | 356 | 354 | 2 | 412 | 298 | 20 | Φ18 | 16 | 32 | 50 | 5 | 93 | 475 | 49 | 235 | 49 |
7 | 010.25.400 | 011.25.400 | 013.25.400 | 493 | 307 | 70 | 50 | 10 | 401 | 399 | 2 | 457 | 343 | 24 | Φ18 | 16 | 32 | 50 | 6 | 86 | 528 | 48 | 276 | 55 |
8 | 010.25.450 | 011.25.450 | 013.25.450 | 543 | 357 | 70 | 50 | 10 | 451 | 449 | 2 | 507 | 393 | 24 | Φ18 | 16 | 32 | 50 | 6 | 94 | 576 | 56 | 324 | 62 |
9 | 010.30(25).500 | 011.30(25).500 012.30(25).500 | 013.30(25).500 014.30(25).500 | 602 | 398 | 80 | 70 | 10 | 501 | 498 | 4 | 566 | 434 | 20 | Φ18 | 16 | 32 | 60 | 5 6 | 123 102 | 629 628.8 | 74 62 | 367 368.4 | 84 |
10 | 010.30(25).560 | 011.30(25).560 012.30(25).560 | 013.30(25).560 014.30(25).560 | 662 | 458 | 80 | 70 | 10 | 561 | 558 | 4 | 626 | 494 | 20 | Φ18 | 16 | 32 | 60 | 5 6 | 135 112 | 689 688.8 | 86 72 | 427 428.4 | 92 |
11 | 010.30(25).630 | 011.30(25).630 012.30(25).630 | 013.30(25).630 014.30(25).630 | 732 | 528 | 80 | 70 | 10 | 631 | 628 | 4 | 696 | 564 | 24 | Φ18 | 16 | 32 | 60 | 6 8 | 126 94 | 772.8 774.4 | 83 62 | 494.4 491.2 | 104 |
12 | 010.30(25).710 | 011.30(25).710 012.30(25).710 | 013.30(25).710 014.30(25).710 | 812 | 608 | 80 | 70 | 10 | 711 | 708 | 4 | 776 | 644 | 24 | Φ18 | 16 | 32 | 60 | 6 8 | 139 104 | 850.8 854.4 | 96 72 | 572.4 571.2 | 121 |
13 | 010.40(30).800 | 011.40(30).800 012.40(30).800 | 013.40(30).800 014.40(30).800 | 922 | 678 | 100 | 90 | 10 | 801 | 798 | 6 | 878 | 722 | 30 | Φ22 | 20 | 40 | 80 | 8 10 | 118 94 | 966.4 968 | 80 64 | 635.2 634 | 200 |
14 | 010.40(30).900 | 011.40(30).900 012.40(30).900 | 013.40(30).900 014.40(30).900 | 1022 | 778 | 100 | 90 | 10 | 901 | 898 | 6 | 978 | 822 | 30 | Φ22 | 20 | 40 | 80 | 8 10 | 130 104 | 1062.4 1068 | 93 74 | 739.2 734 | 225 |
15 | 010.40(30).1000 | 011.40(30).1000 012.40(30).1000 | 013.40(30).1000 014.40(30).1000 | 1122 | 878 | 100 | 90 | 10 | 1001 | 998 | 6 | 1078 | 922 | 36 | Φ22 | 20 | 40 | 80 | 10 12 | 116 96 | 1188 1185.6 | 83 69 | 824 820.8 | 263 |
16 | 010.40(30).1120 | 011.40(30).1120 012.40(30).1120 | 013.40(30).1120 014.40(30).1120 | 1242 | 998 | 100 | 90 | 10 | 1121 | 1118 | 6 | 1198 | 1042 | 36 | Φ22 | 20 | 40 | 80 | 10 12 | 127 106 | 1298 1305.6 | 95 79 | 944 940.8 | 281 |
17 | 010.45(35).1250 | 011.45(35).1250 012.45(35).1250 | 013.45(35).1250 014.45(35).1250 | 1390 | 1110 | 110 | 100 | 10 | 1252 | 1248 | 5 | 1337 | 1163 | 40 | Φ26 | 24 | 48 | 90 | 12 14 | 118 101 | 1449.6 1453.2 | 88 75 | 1048.8 1041.6 | 399 |
18 | 010.45(35).1400 | 011.45(35).1400 012.45(35).1400 | 013.45(35).1400 014.45(35).1400 | 1540 | 1260 | 110 | 100 | 10 | 1402 | 1398 | 5 | 1487 | 1313 | 40 | Φ26 | 24 | 48 | 90 | 12 14 | 131 112 | 1605.6 1607.2 | 100 86 | 1192.8 1195.6 | 446 |
19 | 010.45(35).1600 | 011.45(35).1600 012.45(35).1600 | 013.45(35).1600 014.45(35).1600 | 1740 | 1460 | 110 | 100 | 10 | 1602 | 1598 | 5 | 1687 | 1513 | 45 | Φ26 | 24 | 48 | 90 | 14 16 | 127 111 | 1817.2 1820.8 | 100 87 | 1391.6 1382.4 | 507 |
20 | 010.45(35).1800 | 011.45(35).1800 012.45(35).1800 | 013.45(35).1800 014.45(35).1800 | 1940 | 1660 | 110 | 100 | 10 | 1802 | 1798 | 5 | 1887 | 1713 | 45 | Φ26 | 24 | 48 | 90 | 14 16 | 141 123 | 2013.2 2012.8 | 113 99 | 1573.6 1574.4 | 575 |
21 | 010.60(40).2000 | 011.60(40).2000 012.60(40).2000 | 013.60(40).2000 014.60(40).2000 | 2178 | 1825 | 144 | 132 | 12 | 2002 | 1998 | 8 | 2110 | 1891 | 48 | Φ33 | 30 | 60 | 120 | 16 18 | 139 123 | 2268.8 2264.4 | 109 97 | 1734.4 1735.2 | 1047 |
22 | 010.60(40).2240 | 011.60(40).2240 012.60(40).2240 | 013.60(40).2240 014.60(40).2240 | 2418 | 2065 | 144 | 132 | 12 | 2242 | 2238 | 8 | 2350 | 2131 | 48 | Φ33 | 30 | 60 | 120 | 16 18 | 153 136 | 2492.8 2498.4 | 125 111 | 1990.4 1987.2 | 1181 |
23 | 010.60(40).2500 | 011.60(40).2500 012.60(40).2500 | 013.60(40).2500 014.60(40).2500 | 2678 | 2325 | 144 | 132 | 12 | 2502 | 2498 | 8 | 2610 | 2391 | 56 | Φ33 | 30 | 60 | 120 | 18 20 | 151 136 | 2768.4 2776 | 125 112 | 2339.2 2228 | 1315 |
24 | 010.60(40).2800 | 011.60(40).2800 012.60(40).2800 | 013.60(40).2800 014.60(40).2800 | 2978 | 2625 | 144 | 132 | 12 | 2802 | 2798 | 8 | 2910 | 2691 | 56 | Φ33 | 30 | 60 | 120 | 18 20 | 168 151 | 3074.4 3076 | 141 127 | 2527.2 2528 | 1484 |
25 | 010.75(50).3150 | 011.75(50).3150 012.75(50).3150 | 013.75(50).3150 014.75(50).3150 | 3376 | 2922 | 174 | 162 | 12 | 3152 | 3147 | 8 | 3286 | 3014 | 56 | Φ45 | 42 | 84 | 150 | 20 22 | 171 155 | 3476 3471.6 | 142 129 | 2828 2824.8 | 2618 |
1. N1 is the number of lubricating oil holes. Oil cup M10 × 1JB/T7940.1~JB/T7940.2。 The user can specify the position of the oil hole according to the actual application situation.
2. N - ∅ can be changed to a threaded hole, with a diameter of M and a depth of 2M.
3. The specifications in this sample are standard products, and the inner and outer diameters are free tolerances. If there are matching requirements between the main engine and the slewing bearing, please indicate the matching dimensions and accuracy in the contract or contract attachments (such as technical agreements).
4. The products listed in the table are our company's regular products. If you have any other special requirements, please contact our company.
Single-ROW Four Point Contact Ball Slewing Ring 011 external gear - AOXUAN Bearings.pdf
It is especially suitable for heavy machinery requiring large diameters, such as bucket wheel excavators, wheel cranes, marine cranes, port cranes, steel turntables, large tonnage truck cranes and other machinery.
1) Are you a trader or a manufacturer?
We are professional slewing bearing manufacturer with more than 20 years experience, and our factory is located in Jiangsu Province.
2) What are the terms of payment?
We usually accept T/T or L/C.Other terms are negotiable.
3) What is your minimum order quantity?
It depends on what you buy. Under normal circumstances, our minimum order quantity is 1 piece.
4) What's your delivery time?
Our lead time is only 3-7 days if stock is available. If it is our standard type, the delivery time is about 25 days, if it is not standard type, the delivery time is 45~50 days.
5) What about quality control?
We have a perfect quality management system to produce perfect products.Responsible for the careful testing of product quality and specifications, monitoring each production process until packaging is completed to ensure product safety into the container.
6) Can you provide special customization according to the working conditions?
Sure, we can design and produce the slewing bearings for different working conditions.
7) Single-ROW Four Point Contact Ball Slewing Ring - 011.012. External Gear OEM available
Changzhou Aoxuan Heavy Bearing Co., Ltd. is located in Changzhou, Jiangsu Province. It is a high-tech enterprise specializing in research, development, design, manufacturing and sales of slewing bearings. The company covers an area of 32000 ㎡ and a building area of 25500 ㎡. The company has more than 120 sets of various machining equipment and more than 30 advanced testing equipment, The annual output of slewing bearing exceeds 30000 sets.
Changzhou Aoxuan Heavy Bearing Co., Ltd., has been successively recognized as a private science and technology enterprise in Changzhou City, a high-tech enterprise in Jiangsu Province, and a heavy load slewing bearing engineering technology research center in Changzhou City, with rich and sustainable research and development capabilities.
The company continued to strengthen the "industry university research" cooperation, and carried out professional research and cooperation in slewing bearing related fields with colleges and departments of Hehai University, Jiangsu University, Nanjing University of Technology, Luoyang Bearing Science and Technology Research Institute and other universities and industry research institutes.
Slewing bearings comprise an inner ring and an outer ring, one of which usually incorporates a gear. Together with attachment holes in both rings, they enable an optimized power transmission with a simple and quick connection between adjacent machine components. The bearing raceways, in conjunction with the rolling elements and cages or spacers, are designed to accommodate loads acting singly or in combination, and in any direction.
According to the stress conditions, the upper and lower rows of steel balls with different diameters are arranged. This open type assembly is very convenient. The bearing angle of the upper and lower circular arc raceways is 90 °, which can withstand large axial force and tipping moment.
No. | Type | Configuration & Structural Dimension | Mounting Hole Dimension | Gear Parameter |
Weight | |||||||||||||||||||
010 | 011,012 | 013,014 | D | d | H | H1 | h | D3 | d1 | n1 | D1 | D2 | n | Type 0 | Type1,2,3 | b | m | 011,012 | 013,014 | |||||
Steel Ball Spec. DL | φ | M | T | z | da | z | da | kg | ||||||||||||||||
1 | 010.20.200 | 011.20.200 | / | 280 | 120 | 60 | 50 | 10 | 201 | 199 | 2 | 248 | 152 | 12 | Φ16 | 14 | 28 | 40 | 3 | 98 | 300 | / | / | 20 |
2 | 010.20.224 | 011.20.224 | / | 304 | 144 | 60 | 50 | 10 | 225 | 223 | 2 | 272 | 176 | 12 | Φ16 | 14 | 28 | 40 | 3 | 105 | 321 | / | / | 22 |
3 | 010.20.250 | 011.20.250 | / | 330 | 170 | 60 | 50 | 10 | 251 | 249 | 2 | 298 | 202 | 18 | Φ16 | 14 | 28 | 40 | 4 | 86 | 352 | / | / | 25 |
4 | 010.20.280 | 011.20.280 | / | 360 | 200 | 60 | 50 | 10 | 281 | 279 | 2 | 328 | 232 | 18 | Φ16 | 14 | 28 | 40 | 4 | 94 | 384 | / | / | 28 |
5 | 010.25.315 | 011.25.315 | 013.25.315 | 408 | 222 | 70 | 50 | 10 | 316 | 314 | 2 | 372 | 258 | 20 | Φ18 | 16 | 32 | 50 | 5 | 85 | 435 | 40 | 190 | 43 |
6 | 010.25.355 | 011.25.355 | 013.25.355 | 448 | 262 | 70 | 50 | 10 | 356 | 354 | 2 | 412 | 298 | 20 | Φ18 | 16 | 32 | 50 | 5 | 93 | 475 | 49 | 235 | 49 |
7 | 010.25.400 | 011.25.400 | 013.25.400 | 493 | 307 | 70 | 50 | 10 | 401 | 399 | 2 | 457 | 343 | 24 | Φ18 | 16 | 32 | 50 | 6 | 86 | 528 | 48 | 276 | 55 |
8 | 010.25.450 | 011.25.450 | 013.25.450 | 543 | 357 | 70 | 50 | 10 | 451 | 449 | 2 | 507 | 393 | 24 | Φ18 | 16 | 32 | 50 | 6 | 94 | 576 | 56 | 324 | 62 |
9 | 010.30(25).500 | 011.30(25).500 012.30(25).500 | 013.30(25).500 014.30(25).500 | 602 | 398 | 80 | 70 | 10 | 501 | 498 | 4 | 566 | 434 | 20 | Φ18 | 16 | 32 | 60 | 5 6 | 123 102 | 629 628.8 | 74 62 | 367 368.4 | 84 |
10 | 010.30(25).560 | 011.30(25).560 012.30(25).560 | 013.30(25).560 014.30(25).560 | 662 | 458 | 80 | 70 | 10 | 561 | 558 | 4 | 626 | 494 | 20 | Φ18 | 16 | 32 | 60 | 5 6 | 135 112 | 689 688.8 | 86 72 | 427 428.4 | 92 |
11 | 010.30(25).630 | 011.30(25).630 012.30(25).630 | 013.30(25).630 014.30(25).630 | 732 | 528 | 80 | 70 | 10 | 631 | 628 | 4 | 696 | 564 | 24 | Φ18 | 16 | 32 | 60 | 6 8 | 126 94 | 772.8 774.4 | 83 62 | 494.4 491.2 | 104 |
12 | 010.30(25).710 | 011.30(25).710 012.30(25).710 | 013.30(25).710 014.30(25).710 | 812 | 608 | 80 | 70 | 10 | 711 | 708 | 4 | 776 | 644 | 24 | Φ18 | 16 | 32 | 60 | 6 8 | 139 104 | 850.8 854.4 | 96 72 | 572.4 571.2 | 121 |
13 | 010.40(30).800 | 011.40(30).800 012.40(30).800 | 013.40(30).800 014.40(30).800 | 922 | 678 | 100 | 90 | 10 | 801 | 798 | 6 | 878 | 722 | 30 | Φ22 | 20 | 40 | 80 | 8 10 | 118 94 | 966.4 968 | 80 64 | 635.2 634 | 200 |
14 | 010.40(30).900 | 011.40(30).900 012.40(30).900 | 013.40(30).900 014.40(30).900 | 1022 | 778 | 100 | 90 | 10 | 901 | 898 | 6 | 978 | 822 | 30 | Φ22 | 20 | 40 | 80 | 8 10 | 130 104 | 1062.4 1068 | 93 74 | 739.2 734 | 225 |
15 | 010.40(30).1000 | 011.40(30).1000 012.40(30).1000 | 013.40(30).1000 014.40(30).1000 | 1122 | 878 | 100 | 90 | 10 | 1001 | 998 | 6 | 1078 | 922 | 36 | Φ22 | 20 | 40 | 80 | 10 12 | 116 96 | 1188 1185.6 | 83 69 | 824 820.8 | 263 |
16 | 010.40(30).1120 | 011.40(30).1120 012.40(30).1120 | 013.40(30).1120 014.40(30).1120 | 1242 | 998 | 100 | 90 | 10 | 1121 | 1118 | 6 | 1198 | 1042 | 36 | Φ22 | 20 | 40 | 80 | 10 12 | 127 106 | 1298 1305.6 | 95 79 | 944 940.8 | 281 |
17 | 010.45(35).1250 | 011.45(35).1250 012.45(35).1250 | 013.45(35).1250 014.45(35).1250 | 1390 | 1110 | 110 | 100 | 10 | 1252 | 1248 | 5 | 1337 | 1163 | 40 | Φ26 | 24 | 48 | 90 | 12 14 | 118 101 | 1449.6 1453.2 | 88 75 | 1048.8 1041.6 | 399 |
18 | 010.45(35).1400 | 011.45(35).1400 012.45(35).1400 | 013.45(35).1400 014.45(35).1400 | 1540 | 1260 | 110 | 100 | 10 | 1402 | 1398 | 5 | 1487 | 1313 | 40 | Φ26 | 24 | 48 | 90 | 12 14 | 131 112 | 1605.6 1607.2 | 100 86 | 1192.8 1195.6 | 446 |
19 | 010.45(35).1600 | 011.45(35).1600 012.45(35).1600 | 013.45(35).1600 014.45(35).1600 | 1740 | 1460 | 110 | 100 | 10 | 1602 | 1598 | 5 | 1687 | 1513 | 45 | Φ26 | 24 | 48 | 90 | 14 16 | 127 111 | 1817.2 1820.8 | 100 87 | 1391.6 1382.4 | 507 |
20 | 010.45(35).1800 | 011.45(35).1800 012.45(35).1800 | 013.45(35).1800 014.45(35).1800 | 1940 | 1660 | 110 | 100 | 10 | 1802 | 1798 | 5 | 1887 | 1713 | 45 | Φ26 | 24 | 48 | 90 | 14 16 | 141 123 | 2013.2 2012.8 | 113 99 | 1573.6 1574.4 | 575 |
21 | 010.60(40).2000 | 011.60(40).2000 012.60(40).2000 | 013.60(40).2000 014.60(40).2000 | 2178 | 1825 | 144 | 132 | 12 | 2002 | 1998 | 8 | 2110 | 1891 | 48 | Φ33 | 30 | 60 | 120 | 16 18 | 139 123 | 2268.8 2264.4 | 109 97 | 1734.4 1735.2 | 1047 |
22 | 010.60(40).2240 | 011.60(40).2240 012.60(40).2240 | 013.60(40).2240 014.60(40).2240 | 2418 | 2065 | 144 | 132 | 12 | 2242 | 2238 | 8 | 2350 | 2131 | 48 | Φ33 | 30 | 60 | 120 | 16 18 | 153 136 | 2492.8 2498.4 | 125 111 | 1990.4 1987.2 | 1181 |
23 | 010.60(40).2500 | 011.60(40).2500 012.60(40).2500 | 013.60(40).2500 014.60(40).2500 | 2678 | 2325 | 144 | 132 | 12 | 2502 | 2498 | 8 | 2610 | 2391 | 56 | Φ33 | 30 | 60 | 120 | 18 20 | 151 136 | 2768.4 2776 | 125 112 | 2339.2 2228 | 1315 |
24 | 010.60(40).2800 | 011.60(40).2800 012.60(40).2800 | 013.60(40).2800 014.60(40).2800 | 2978 | 2625 | 144 | 132 | 12 | 2802 | 2798 | 8 | 2910 | 2691 | 56 | Φ33 | 30 | 60 | 120 | 18 20 | 168 151 | 3074.4 3076 | 141 127 | 2527.2 2528 | 1484 |
25 | 010.75(50).3150 | 011.75(50).3150 012.75(50).3150 | 013.75(50).3150 014.75(50).3150 | 3376 | 2922 | 174 | 162 | 12 | 3152 | 3147 | 8 | 3286 | 3014 | 56 | Φ45 | 42 | 84 | 150 | 20 22 | 171 155 | 3476 3471.6 | 142 129 | 2828 2824.8 | 2618 |
1. N1 is the number of lubricating oil holes. Oil cup M10 × 1JB/T7940.1~JB/T7940.2。 The user can specify the position of the oil hole according to the actual application situation.
2. N - ∅ can be changed to a threaded hole, with a diameter of M and a depth of 2M.
3. The specifications in this sample are standard products, and the inner and outer diameters are free tolerances. If there are matching requirements between the main engine and the slewing bearing, please indicate the matching dimensions and accuracy in the contract or contract attachments (such as technical agreements).
4. The products listed in the table are our company's regular products. If you have any other special requirements, please contact our company.
Single-ROW Four Point Contact Ball Slewing Ring 011 external gear - AOXUAN Bearings.pdf
It is especially suitable for heavy machinery requiring large diameters, such as bucket wheel excavators, wheel cranes, marine cranes, port cranes, steel turntables, large tonnage truck cranes and other machinery.
1) Are you a trader or a manufacturer?
We are professional slewing bearing manufacturer with more than 20 years experience, and our factory is located in Jiangsu Province.
2) What are the terms of payment?
We usually accept T/T or L/C.Other terms are negotiable.
3) What is your minimum order quantity?
It depends on what you buy. Under normal circumstances, our minimum order quantity is 1 piece.
4) What's your delivery time?
Our lead time is only 3-7 days if stock is available. If it is our standard type, the delivery time is about 25 days, if it is not standard type, the delivery time is 45~50 days.
5) What about quality control?
We have a perfect quality management system to produce perfect products.Responsible for the careful testing of product quality and specifications, monitoring each production process until packaging is completed to ensure product safety into the container.
6) Can you provide special customization according to the working conditions?
Sure, we can design and produce the slewing bearings for different working conditions.
7) Single-ROW Four Point Contact Ball Slewing Ring - 011.012. External Gear OEM available
Changzhou Aoxuan Heavy Bearing Co., Ltd. is located in Changzhou, Jiangsu Province. It is a high-tech enterprise specializing in research, development, design, manufacturing and sales of slewing bearings. The company covers an area of 32000 ㎡ and a building area of 25500 ㎡. The company has more than 120 sets of various machining equipment and more than 30 advanced testing equipment, The annual output of slewing bearing exceeds 30000 sets.
Changzhou Aoxuan Heavy Bearing Co., Ltd., has been successively recognized as a private science and technology enterprise in Changzhou City, a high-tech enterprise in Jiangsu Province, and a heavy load slewing bearing engineering technology research center in Changzhou City, with rich and sustainable research and development capabilities.
The company continued to strengthen the "industry university research" cooperation, and carried out professional research and cooperation in slewing bearing related fields with colleges and departments of Hehai University, Jiangsu University, Nanjing University of Technology, Luoyang Bearing Science and Technology Research Institute and other universities and industry research institutes.