Product Description

Introduction of CZPT excavator slewing rings
CZPT is a professional manufacturer in slewing ring bearings since 1993. We can also design and make other standard and non-standard ball bearings, roller bearings and precision bearings as per customer’s different technical requirements.
Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
Excavator slewing bearing is a special slewing ring bearing as per its applications. And it is a very important part for excavators, we can supply excavator slewing bearings for both second-hand excavators for maintenance and new excavators.

About CZPT bearings
1.introduction:we are a manufacturer of slewing bearing since 1993, our factory occupies a area of 30000square meters with 4 workshop and 1 office building. 
2. Featured products: slewing bearing and slewing drive
3. Capital: Current is 1 million RMB, but we are increasing the capital to 10 million RMB
4. Workers: 40
5. Certificate: ISO9001:2008, 3.1 certificate, CCS certificate, Science and Technology Progress Award
6. Annual Exportation: 8million USD
7. Exported countries: (39)
Asia: India, Pakistan, Iran, Signore, Georgia, Malaysia, Vietnam, Thailand, Philippines, Israel, Korea, UAE, Sri Lanka, Saudi Arabia,
Europe: Turkey, Russia, Spain, Czech Republic, Italy, Poland, Slovakia, Bosnia and Herzegovina, Austria, France, Germany, Switzerland, Finland, Ukraine, UK
America: USA, Canada, Mexico, Brazil, Puerto Rico, Peru, Chile
Africa: South Africa, Egypt
Oceania: Australia

Structure:
Excavator slewing bearing are usually made as per single row ball slewing bearing structure, and most of them are internal gear types, but some are external gear types.

Features
Excavator slewing bearings have familiar features as single row ball slewing ring bearings.
Compact structure, light weight and easily installment.

Application
Excavator slewing bearings are widely used for all brands of excavators

LYHY Slewing Bearing Packing 
Bearing surface is covered with the anti-rust oil first; and then wrapped with the plastic film;
And then packed with kraft paper and professional belts;
At last, with wooden box totally at the outer packing to invoid the rust or the moist;
We can depend on the customers  demand to be packed;

Transportation:
All CZPT slewing ring bearings can be usually delivered timely, usual production time is 15-50 days based on different slew bearings diameters, sometimes slew rings will be in stock.
Slewing bearings can be offered different delivery terms, such as EXW, FOB, CIF, DDU and so on.
Also, slewing rings can be transported by different transport ways, by express (such as DHL, TNT, UPS, FEDEX and so on), by air, by sea, by truck, by railway and so on.

INSTALLATION OF CZPT SLEWING BEARINGS

Preparation:
Make sure that the model is correct and slewing bearing isn’t damaged during transportation.
2.  Check the appearance and rotational state of the bearing, such as rotational precision clearance, rotating flexibility, seals position, lubrication grease etc.
3.  The installation datum plane and bracket installing plane should be clean, grease, burr, paint and other foreign body should be wiped off.

Installation:

1. The screws in the installing plane should be fit with the mounting holes in the slewing bearing
2.  The slewing bearing has a soft zone marked with an “s” on the upper surface, when installing the bearing, it is important to ensure that this area is placed in a non-load or infrequent load zone.
3.  When the bearing is placed on the supporting frame work it is important to check the interface between these 2 surfaces. This check should be carried out with the insertion of feel gauges between the 2 surfaces. If a gap should exist then it is recommended to plane/resurface the effective area so as to remove the gap.
4.  Install slewing bearing with high strength screws, and choose appropriate strength bolts. All bolts are required to be tightened evenly. The sequence of this tightening process is shown in Pic. Welding of bearing is not allowed, in the event of welding any adjacent parts, heat transfer shall be avoided so as to cause the bearing to become deformed or change the hardness.
5.  After installation, the bearing should be rotated to check for smooth operation and any emission of unusual noise. If either of the aforementioned are noted, then the bearing should be adjusted to eliminate them. The teeth of the largest run-out are coated with green paint.

FAQ:

Q: Are LYHY BEARINGS trading company or manufacturer?
A: CZPT BEARINGS is a professional manufacturer for slewing bearings, thin section bearings, ball bearings and rolling bearings

Q: How do LYHY BEARINGS control quality of their bearing?
A: LYHY BEARINGS has established strict quality control systems, all the products and services has passed ISO9001-2008 Quality Certificate and third party such as CCS, LR,ABS,BV

Q: What is the MOQ?
A: MOQ is 1pc, pls message us for detailed information.

Q: How about the package for CZPT bearings?
A: Standard Industrial packing in general condition (Plastic tube+ professional plastic belts+ plywood case). Accept design package when OEM.

Q: How long is the production time?
A: It takes about 7-40 days, depends on the model and quantity.

Q: How about the shipping?
A: We can arrange the shipment or you may have your own forwarder.

Q: Is sample available?
A: Yes, sample order is acceptable.

Q: Can we use our own LOGO or design on bearings?
A: Yes. OEM is acceptable for LYHY BEARINGS. We can design as per your requirements and use your own LOGO and package design.

FAQ:

Q: Are LYHY BEARINGS trading company or manufacturer?
A: CZPT BEARINGS is a professional manufacturer for slewing bearings, thin section bearings, ball bearings and rolling bearings

Q: How do LYHY BEARINGS control quality of their bearing?
A: LYHY BEARINGS has established strict quality control systems, all the products and services has passed ISO9001-2008 Quality Certificate and third party such as CCS, LR,ABS,BV

Q: What is the MOQ?
A: MOQ is 1pc, pls message us for detailed information.

Q: How about the package for CZPT bearings?
A: Standard Industrial packing in general condition (Plastic tube+ professional plastic belts+ plywood case). Accept design package when OEM.

Q: How long is the production time?
A: It takes about 7-40 days, depends on the model and quantity.

Q: How about the shipping?
A: We can arrange the shipment or you may have your own forwarder.

Q: Is sample available?
A: Yes, sample order is acceptable.

Q: Can we use our own LOGO or design on bearings?
A: Yes. OEM is acceptable for LYHY BEARINGS. We can design as per your requirements and use your own LOGO and package design.

Excavator Model OD ID H OH IH Outer holes Inner holes Teeth no.
PC30-1 595 441 52 40 43 15-13.5 16-13.5 89
PC30-2 614.5 452 53.5 40 43.5 20-φ13.5 20-φ13.5 92
PC30(92T) 614.5 452 53.5 40 43.5 20-φ13.5 20-φ13.5 92
PC30/96T 640 472 55 42 45 16-φ13.5 20-φ13.5 96
PC50-7 748 573.5 60 50 50 27-φ14 24-φ14 90
PC55 748 573.5 60 50 50 27-φ14 24-φ14 90
PC60-5 852 627 75 58 62 24-18 24-18 80/8m
PC60-6(76T) 806 596 74 59 61 24-18.5 24-18.5 76
PC60-6(80T) 852 627 75 58 62 24-18 24-18 80
PC60-7(76T) 806 596 74 59 61 23-18.5 24-18.5 76
PC60-7(80T) 852 627 75 58 62 22-18 24-18 80
PC90-6 852 627 75 58 62 24-18 24-18 80
PC100-5 1111 873 75 65 63 38-18 38-18 89
PC120-5 1111 873 75 65 63 38-18 38-18 89
PC120-6(4D95) 1111 882 77 65 64 34-18 38-18 90
PC120-6(4D102) 1106 884 75 65 64 34-18 36-M16 90
PC150-5 1190 922 83 73 67 26-22.5 30-22 94
PC150-7 1189 922 83 73 67 26-22 30-22 94
PC160-7 1224 974 82 67 73 32-24 36-M20 99
PC20HT 1242 916 107 90 95 16-24 36-24 78
PC200-1 1242 915 100 90 90 22-M20 36-24 78
PC200-2 1209 916 95 80 85 22-24 36-24 78
PC200-3 1303 1084 104 81 90 26-M22 36-M20 110
PC200-5 1302 1084 109.5 86.5 90 26-M24 36-M20 110
PC200-8 1321 1080 98 77 89 32-24 36-M20 96/11M
PC210-7 1323 1084 100 77 90 32-24 36-M20 110
PC220-3 1303 1084 104 81 90 26-M22 36-M20 110
PC220-5 1302 1084 109.5 86.5 90 26-M24 36-M20 110
PC200-6(S6D95) 1323 1084 100 77 90 32-26.5 36-M20 110
PC200-6(S6D102) 1323 1084 100 77 90 32-24 36-M20 110
PC200-6(S6D102)small2 1323 1084 100 77 90 32-24 36-M20 110
PC220-6(S6D95) 1323 1084 100 77 90 32-26.5 36-M20 110
PC220-6(S6D102) 1323 1084 100 77 90 32-24 36-M20 110
PC200-7(110T) 1323 1084 100 77 90 32-24 36-M20 110
PC200-7(92T) 1323 1073 112 77 102 32-24 36-M22 92
PC220-7(92T) 1323 1073 112 77 102 32-24 36-M22 92
PC227 1323 1073 112 77 102 33-24 36-M22 92
PC228/32hole 1323 1084 100 77 90 32-24 36-M20 110
PC228/40hole 1323 1083 100 77 90 40-24 36-M20 110
PC300-2 1470 1140 137 100 110 34-26 36-26 83
PC300-3 1526 1236 122 87 110 35-M24 40-M24 90
PC300-5 1526 1236 122 97 110 35-M24 40-M24 90
PC300-6 1532 1235 125 95 113 35-26 40-M24 90
PC350-6 1532 1235 125 95 113 35-26 40-M24 90
PC360-7 1532 1235 125 95 113 35-26 40-M24 90
PC400-3 1550 1236 147 108 135 35-M24 40-M24 90
PC400-5 1550 1238 152 108 140 35-26 40-M24 84
PC450-5 1550 1238 152 108 140 35-26 40-M24 84
PC400-6 1563 1240 152 108 140 35-29 40-M24 84
PC400-7 1563 1240 152 108 140 35-29 40-M24 84
PC450-6 1563 1240 152 108 140 35-29 40-M24 84
PC450-7 1563 1240 152 108 140 35-29 40-M24 84
PC650 1978 1513 172 138 165 44-φ33 48-φ33 86
EX40-1 615 446 59 40 50 24-13.5 20-13.5 76
EX60-1 781 554 78 60 65 24-18 24-18 71
EX60-3 781 554 78 60 65 24-φ18 24-φ18 71
EX60-5 774 554 78 60 65 24-18 24-18 71
EX75 808 595 75 58 61 25-φ16 24-φ16 76
EX100-1 1195 962 86 72 70 36-19 36-17 98
EX120-1 1195 962 86 72 70 36-19 36-17 98
EX120-2 1092 862 84 68 70 36-20 36-18 88
EX120-3 1092 862 84 68 70 36-20 36-18 88
EX120-5 1092 862 84 68 70 36-20 36-18 88
EX200-1 1310 1084 106 75 95 36-22 36-M20X1.5 92
EX200-2 1312 1083.5 106 72 95 36-22 36-M20X1.5 92
EX200-3 1312 1083.5 106 72 95 36-22 36-M20X1.5 92
EX200-5 1312 1083.5 106 72 95 36-22 36-M20X1.5 92
EX210-5 1312 1083.5 106 72 95 36-22 36-M20X1.5 92
EX220-5 1420 1138 108 84 98 36-24 36-M22X1.5 83
EX300-1 1530 1234 117 91 105 32-25 36-M24*2 90
EX300-2 1530 1249 115 83 105 32-25 36-M24*2-7H 91
EX400-1 1650 1274 130 118 110 36-φ29 36-φ29 107
EX300-3 1530 1249 115 83 105 32-25 36-M24*2-7H 91
EX400-3 1530 1249 115 83 105 32-25 36-M24*2-7H 91
EX300-5 1630 1297 120 95 110 36-φ29 36-M27*2 83
ZX60 756 574 66 52 56 27-φ15.5 24-φ15.5 90
ZAX70 806 593 73 60 60 25-φ17.5 24-φ17.5 76
ZX120 1092 860 86 68 70 30-φ20 36-18 88
ZX200 1312 1081 106 72 95 32-21 36-M20X1.5 92
ZX210 1312 1081 106 72 95 32-21 36-M20X1.5 92
ZX200-3 1316 1084 96 77 85 37-φ21 36-M20*1.5 92
ZX225U 1310 1084 106 72 95 32-φ21.5 36-M20*1.5 92
ZAX230 1420 1138 108 84 98 36-24 36-M22X1.5 83
ZX240 1420 1138 108 84 98 36-24 36-M22X1.5 83
ZX270 1420 1138 108 84 98 36-24 36-M22X1.5 83
ZX330 1630 1297 120 95 110 36-φ29 36-M27*2 83
ZX450H 1650 1274 130 118 110 36-φ29 36-φ29 107
SK03 810 584 84 67 67 30-17.5 30-17.5 75
SK60-5 810 586.5 84 67 67 25-17.5 30-17.5 75
SK100 1093 880 85 60 75 28-17 36-M16 89
SK09 1163 970 81 57 71 35-17 36-M16 123
SK120-5 1093 880 85 60 75 28-17 36-M16 89
SK200-1 1311 1083 105 78 95 33-22 36-M20X1.5 110
SK200-2 1311 1083 105 78 95 33-22 36-M20X1.5 110
SK200-3 1311 1083 105 78 95 33-22 36-M20X1.5 110
SK200-5 1311 1083 105 78 95 33-22 36-M20X1.5 110
SK200-6 1311 1083 105 78 95 33-22 36-M20X1.5 110
SK210-6E 1311 1083 105 78 95 33-22 36-M20X1.5 110
SK200-8 1310 1082 108 76 98 33-21 36-M20 110
SK07-1 1300 1085 95 70 85 32-22 36-M20 110
SK07-2 1312 1083 105 78 95 32-22 36-M20*1.5 110
SK907B 1312 1083 105 78 95 32-22 36-M20*1.5 110
SK07-1-N2/thick 1300 1085 95 70 85 32-22 36-M20 110
SK07-N2/thin 1312 1083 105 78 95 32-22 36-M20X1.5 110
SK235 1410 1083 116 88 106 33-φ22 36-M20*1.5 110
SK260-8 1418 1134 120 86 110 33-22 36-M20×1.5 82
SK230-6 1408 1134 122 88 111 33-22.5 36-M20×1.5 82
SK350-6 1614 1272 120 100 109 35-φ26.5 36-M24*2 92
CAT 45 683 484 60 50 50 24-16 24-16 82
ZheJiang cat50 683 484 60 50 50 24-16 24-16 82
ZheJiang cat60 800 590 70 56 60 24-17.5 24-17.5 86
ZheJiang cat80 908 651 78 68 68 20-22 20-22 94
CAT305.5 770 574 73 62 57 20-φ18un.es 18-φ18un.es 84
CAT305-5 770 574 73 62 57 20-φ18 18-φ18 84
CAT70B 810 585 84 67 67 25-18 30-18 75
CAT307B 811 586 84 67 67 25-Φ18.5 30-Φ18 75
CAT307C 810 586 83 63 63 29-18.5 38-18.5 75
CAT308 810 586 84 67 67 25-Φ18 30-Φ18 75
CAT110 1093 881 72 50 62 34-φ18 38-M16 90
CAT312C 1093 881 72 50 62 34-φ18 38-M16 90
CAT120 1115 882 75 60 67 29-φ18.5 30-M16 90
CAT200B 1307.5 1082 100 85 87 33-M20 36-M20 110
CAT312B 1115 882 75 60 67 29-φ18.5 30-M16 90
CAT320B 1316 1082 100 85 87 33-22 36-M20 110
CAT320C 1316 1081 105 73 93 42-22 40-M20 110
CAT320L 1316 1084 105 85 92 38-φ22 36-M20 110
CAT311 1093 881 72 50 62 34-Φ18 38-M16 90
CAT325B 1495 1164 110 93 95 35-Φ26un.es 38-M24 85
CAT325C 1495 1164.2 110 93 95 38-26un.es 42-M24 85
CAT330C 1665 1312 138.5 110 123 42-26un.es 46-M26 84/16m
CAT345C 1678 1316 141 105 125 54-26 70-M24 96
CAT365CL 1805 1348 180 138 150 37-33 60-33 98
CAT385C                
HD250-7 810 584 84 67 67 30-φ17.5 30-φ17.5 75
HD450-5 1111 873 75 65 62 30-18 30-18 89
HD450-7 1111 873 75 65 62 30-18 30-18 89
HD512 1111 873 75 65 62 30-18 30-18 89
HD513 1111 873 75 65 62 30-18 30-18 89
HD516 1111 873 75 65 62 30-18 30-18 89
HD550 1163 961 94 66 84 36-φ18 36-M16*1.5 98
HD100 1111 873 75 65 62 30-18 30-18 89
HD700-5 1300 1084 110 89 94 35-M20 36-M20 92
HD700-7 1320 1080 95 70 85 36-22 36-M20 92
HD800-7 1402 1132 97 80 80 36-φ22 36-M20 96
HD800-5 1402 1132 97 80 80 36-φ22 36-M20 96
HD820-3 1320 1080 95 70 85 36-22 36-M20 92
HD820-1 1320 1080 95 70 85 36-22 36-M20 92
HD900-7 1402 1132 97 80 80 36-φ22 36-M20 96
HD1571 1595 1277 111 90 100 36-φ26.5 36-M24 92
SH60-1 766 560 97 58 80 21-φ17.5 20-φ17.5 71
SH120A1 1171 973 88 56 78 28-18.5 36-M16 98
SH120-1 1171 973 88 56 78 28-18.5 36-M16 98
SH120A2 1171 973 88 56 78 28-18.5 36-M16 98
SH120-2 1171 973 88 56 78 28-18.5 36-M16 98
SH120A3 1171 973 80 56 69 28-18.5 36-M16 98
SH120-3 1171 973 80 56 69 28-18.5 36-M16 98
SH120Z3 1172 973 87 65 78 28-18.5 36-M16 98
SH120C3 1172 973 87 65 78 28-18.5 36-M16 98
SH135 1070 852 101 60 90 28-φ22 36-M16 86
SH140 1171 973 88 56 78 28-18.5 36-M16 98
SH145 1171 973 88 56 78 28-18.5 36-M16 98
SH200A1 1330 1093 102 74 92 31-22.5 36-M20 92
SH200A2 1330 1093 102 74 92 31-22.5 36-M20 92
SH200A3 1330 1093 102 74 92 31-22.5 36-M20 92
SH200C2 1330 1093 102 74 92 31-22.5 36-M20 92
SH200C3 1330 1093 102 74 92 31-22.5 36-M20 92
SH200Z3 1330 1093 102 74 92 31-22.5 36-M20 92
SH220 1375 1094 121 80 111 36-φ26 36-M24 92
SH240-5 1377 1094 123 88 113 28-26 36-M24 92
SH240-3 1377 1094 123 88 113 27-26 36-M24 92
SH260 1171 973 84 56 75 28-18.5 36-M16 98
SH265 1171 973 84 56 75 28-18.5 36-M16 98
SH280 1315 1083 99 65 88 32-22.5 36-M20 92
SH330 1616 1274 120 100 110 41-φ26 46-M24 92
SH350 1510 1192 135 100 125 38-φ26 43-M24 86
SH430 1464 1192 135 78 125 36-φ26 30-M24 86
SH40T 1464 1192 135 78 125 36-φ26 30-M24 86
SH210-5 1330 1093 102 74 92 31-22.5 36-M20 92
sumitomo913B 1120 850 76 66 68 36-φ22 36-M20 86
sumitomo921 1327 1084 110 89 94 32-22 36-M20 92
DH55-5 812 616 75 65 65 24-φ18 24-φ18 90
DH80GO 902 640 82 72 65 24-20 24-M18 82
DH80-7 902 640 82 72 65 24-20 24-M18 82
DH150 1202 947 83 75 70 36-22 36-M20 80
DH200-3 1302 1084 110 80 98 36-20 36-M20 79/14m
DH220-2 1310 1084 110 80 95 36-21.5 36-M20X1.5 79
DH220-3 1310 1084 110 80 95 36-21.5 36-M20X1.5 79
DH220-5 1327 1084 111 88 95 36-21.5 36-M20X1.5 92
DH220-7LC 1327 1084 111 88 95 36-21.5 36-M20X1.5 92
DH215-7 1327 1084 111 88 95 36-21.5 36-M20X1.5 92
DH225-7 1327 1084 110 90 95 36-Φ21.5 36-M20 92
DH258 thick thread 1410 1134 117 88 104 35-φ25un.es 36-M24*1.5 82
DH258-7 thin thread 1410 1134 117 88 104 35-φ25un.es 36-M24 82
DH280 1460 1162 120 95 105 35-φ25 36-M24 85
DH290 1460 1162 120 95 105 35-φ25 36-M24 85
DH300-5 1460 1162 120 95 105 35-φ25 36-M24 85
DH300-7 1464 1165 120 95 110 35-φ26 36-M24 85
DH370-7 1551 1234 132 103 120 35-Φ25 40-M24 90
DH420 1551 1234 132 103 120 35-Φ25 40-M24 90
R60-5 800 573 70 56 60 20-17.5 20-17.5 90
R60-7 800 590 74 60 61 20-17.5 20-17.5 86
R80-7 900 665 85 70 70 30-Φ17.5 30-Φ17.5 85
R110-7 1095 863 80 70 70 36-19 36-M16 88
R130-5 1195 962 85 75 70 36-19 36-M16 98
R130-7 1195 962 85 75 70 36-19 36-M16 98
R200 1328 1083 111 80 94 28-22 36-M20 92
R200-5 1328 1083 111 80 94 28-22 36-M20 92
R210 1328 1083 111 80 94 28-22 36-M20 92
R210-5 1328 1083 111 80 94 28-22 36-M20 92
R210-3 1328 1083 111 80 94 28-22 36-M20 92
R200-7 1327 1083 110 89 94 30-22 36-M20 92
R210-7 1327 1083 110 89 94 30-22 36-M20 92
R215-7 1327 1083 110 89 94 30-22 36-M20 92
R220-5 1328 1083 111 80 94 28-22 36-M20 92
R225-7 1327 1083 110 89 94 30-22 36-M20 92
R290 1526 1236 122 87 110 35-26 40-M24 90
R300 1526 1236 122 87 110 35-26 40-M24 90
R305-7 1526 1235 122 97 110 38-26 40-M24 90
R335-7 1526 1235 122 97 110 38-26 40-M24 90
R360 1550 1234 147 108 135 35-26 40-M24 90
R450-7 1675 1346 132 108 120 46-25 44-M24 114
Liebherr924 1215 940 115 72 105 48-22 56-22 94
Liebherr914 1215 940 115 72 105 48-22 56-22 94
volvoEC210B 1327 1083 108 90 90 34-21.5 36-M20 92
volvoEC210 1327 1082 110 90 90 33-21.5 36-M20 92
volvoEC240 1460 1164 120 95 105 33-24 36-M22 85
volvoVOLVO290 1530 1236 122 90 113 35-Φ26 40-M24 90
volvoEC360 1552 1234 147 108 135 35-26.5 40-M24 90
sany65 812 616 75 65 65 24-φ18 24-φ18 90
sany75/90T 812 616 75 65 65 24-φ18 24-φ18 90
sany75/76T 811 601 75 65 65 24-φ18 24-φ18 76
sany135 1122 824 100 87 90 36-φ22 36-M20 83
sany200 1322 1071 100 77 90 32-24 36-M20 91
sany235C 1326 1071 100 90 90 32-22un.es 36-M20 91
lishide70 852 627 75 58 63 30-φ18 30-M16 80
lishide80 852 627 75 58 63 30-φ18 30-M16 80
lishide130 1120 850 76 66 66 36-φ22 36-M20 86
lishide360 1526 1236 122 87 110 35-φ26 40-M24 90
Liugong907 895 664 68 58 58 20-17.5 20-M16 84/8M
Liugong908 895 664 68 58 58 20-17.5 20-M16 84/8M
Liugong915 1122 824 100 90 85 36-φ22 36-φ22 83
Liugong200(86T) 1365 1017 120 105 105 36-24 36-M22 86
Liugong230(91T) 1358 1080 100 70 90 36-φ24 36-M22 91
Liugong922/925 1408 1128 100 70 90 36-24 36-M22 95
Liugong936 1600 1288 125 82 115 41-φ26 40-M24 93
Liugong936 1656 1346 124     41-φ26 40-M24 97
sunward45 639 472 55 45 45 20-φ13.5 20-φ13.5 80
sunward50(83T) 732 494.4 60 50 50 24-18 24-M16 83
sunward60 805 552 70 60 60 24-17 24-M16 93
sunward70 812 572 80 70 70 32-16 32-M14 96/6m
YC35 640 471 55 45 45 20-Φ13 20-Φ13 80
YC60-8 800 590 70 56 60 20-17.5 20-17.5 86
YC85 922 635.2 100 90 90 30-22 30-M20 80
YC135 1195 963 85 74 70 36-Φ19 36-M16 98
YC230 1327 1084 110 89 94 36-22 36-M20 92
xiagong820 1370 1034 105 80 95 36-22 36-M22 88
xiagong823 1460 1162 110 92 100 35-24 36-M24*2 85
xiagong815 1120 850 76 66 68 36-φ22 36-M20 86
Longgong60 845 616 70 55 60 20-φ17.5 20-M16*1.5 89
Longgong80 908 648 78 68 69.5 24-φ22 24-M20 82
Longgong150 1185 889 90 75 80 36-22 36-M20 90
Longgong210 1328 1084 100 80 90 36-22 36-M20 92
Longgong235 1362 1080 105 85 95 36-24 36-M22 91
casece55 834 649 63 48 55 20-15.5 20-15.5 110
casece210B 1330 1093 102 74 92 31-22.5 36-M20 92
halla200 1327 1084 110 89 94 30-22 36-M20 92
halla210 1327 1084 110 89 94 32-22 36-M20 92
ihi60 845 648 57 48 50 20-17.5 20-17.5 110
lovol85 908 648 78 68 68 24-22 24-m20 82
HL85 896 664 68 58 58 20-22 20-M20 84
HL165 775 554 78 60 65 24-φ17 24-φ17 81
XCMG80 895 664 68 58 58 20-17.5 20-17.5 84/8M
XCMG150 1097 822 90 70 80 36-22 36-M20 83
XCMG150 1122 824 100 87 90 36-φ22 36-φ22 83
XCMG210 1322 1071 100 77 90 32-24 36-M20 91
JCB8056 852 649 70 55 60 24-18 24-M16 109
JCB220 1328 1094 102 74 92 31-φ22 36-M20 92
lingong665 811 622 75 65 65 24-φ18 24-φ18 90
zhengyu80 1008 744 78 68 68 20-φ22 20-M20 94
kubota185 990 784 73 52 63 30-M16*1.5 36-M16*1.5 100
jonyand210 1365 1036 105 75 90 36-24 36-m22 87
PS132 1310 1081 111 90 90 36-M20 36M20 92
PS210 1310 1081 111 90 90 36-M20 36M20 92
MX08-2 1310 1081 111 90 90 36-M20 36M20 92
takeuchi175 1133 861 90 74 74 30-Φ20 36-Φ20 88

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Standard or Nonstandard: Standard
Sealing Gland: Sealed On Both Sides
Rolling-Element Number: Single-Row
Roller Type: Four Point Contact Ball
Material: 50mn, 42CrMo, S48c
Type: Internal Gear
Samples:
US$ 1200/Piece
1 Piece(Min.Order)

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Customization:
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slewing bearing

What Role do Seals and Enclosures Play in Protecting Slewing Bearings from Contaminants?

Seals and enclosures play a crucial role in safeguarding slewing bearings from contaminants, moisture, and other external factors that can lead to premature wear and damage. Here’s how seals and enclosures contribute to the protection of slewing bearings:

  • Contaminant Exclusion:

Seals and enclosures create a physical barrier that prevents contaminants like dust, dirt, sand, and particles from entering the bearing’s internal components. This exclusion minimizes abrasive wear and preserves the integrity of the rolling elements and raceways.

  • Moisture and Corrosion Prevention:

Seals and enclosures provide a shield against moisture and water ingress, crucial in preventing corrosion and rust formation on bearing surfaces. Corrosion-resistant seals are particularly valuable in marine and humid environments.

  • Chemical and Chemical Vapor Resistance:

Specialized seals and enclosures can offer resistance to chemicals, acids, and corrosive substances that might be present in the operating environment. This protection prevents chemical damage to the bearing’s components.

  • Lubrication Retention:

Seals and enclosures help retain the lubricant within the bearing, preventing it from leaking out and ensuring consistent lubrication for smooth operation. This is essential for reducing friction and wear.

  • Prevention of Solid Particle Contamination:

Seals and enclosures block solid particles from entering the bearing chamber, reducing the risk of particle-induced wear, surface damage, and premature failure.

  • Temperature Regulation:

Some seals and enclosures offer thermal insulation, which helps regulate the operating temperature of the bearing. This can be crucial in applications with extreme temperature variations.

  • Enhanced Longevity:

By protecting the bearing from contaminants and adverse environmental conditions, seals and enclosures contribute to the extension of the bearing’s operational life, reducing the need for frequent replacements.

  • Sealing Types:

Seals can come in various types, including lip seals, labyrinth seals, and specialized designs. The choice of seal depends on the application’s requirements and the level of protection needed.

  • Proper Installation and Maintenance:

Proper installation and regular inspection of seals and enclosures are essential to ensure their effectiveness. Damaged or worn seals should be promptly replaced to maintain protection.

In summary, seals and enclosures serve as a critical defense mechanism for slewing bearings against contaminants, moisture, and harmful substances. They contribute to the bearing’s reliability, performance, and overall longevity in various operating environments.

slewing bearing

How does Preload Affect the Performance and Stability of Slewing Bearings?

Preload is a critical factor that can significantly impact the performance and stability of slewing bearings. It involves applying a controlled axial force to the bearing components before assembly. Here’s how preload affects slewing bearings:

  • Reduced Internal Clearance:

Applying preload reduces the internal clearance between the rolling elements and raceways. This minimizes play or clearance in the bearing, enhancing its rigidity and reducing the potential for rolling element skidding during operation.

  • Improved Stiffness:

Preloaded slewing bearings exhibit higher stiffness due to the elimination of internal clearance. This improved stiffness is crucial in applications requiring precise positioning, such as robotics and high-precision machinery.

  • Enhanced Load Distribution:

Preload improves the load distribution among rolling elements, minimizing stress concentrations and promoting uniform load sharing. This is especially important in applications with varying loads and forces.

  • Reduced Vibrations:

By eliminating internal clearance and minimizing rolling element movements, preloaded bearings experience reduced vibrations during operation. This contributes to smoother and more stable equipment performance.

  • Precise Positioning:

Preload ensures minimal movement within the bearing during rotational changes, making it suitable for applications where precise positioning and accurate motion control are essential.

  • Resistance to External Loads:

Preloaded bearings are better equipped to handle external forces and shocks without significant deformation or misalignment, maintaining consistent performance even under varying conditions.

  • Reduced Wear:

With reduced internal clearance and controlled movement, preloaded bearings experience less wear and fatigue. This extends their service life and reduces the frequency of maintenance.

  • Limitations:

However, excessive preload can lead to increased friction, heat generation, and potential damage. It’s essential to apply the right amount of preload according to manufacturer recommendations and application requirements.

In summary, preload in slewing bearings enhances rigidity, load distribution, and stability, making them suitable for applications that demand precise movement and control. Properly applied preload ensures optimal performance and extends the operational life of the bearing.

slewing bearing

How do Different Types of Slewing Bearings Vary in Terms of Design and Function?

Different types of slewing bearings vary significantly in terms of their design and function, catering to diverse industrial requirements. Some common variations include:

  • Single-Row Ball Slewing Bearings: These bearings consist of a single row of balls positioned between two rings. They are compact and suitable for light to moderate axial and radial loads, making them useful in applications like small cranes and excavators.
  • Double-Row Ball Slewing Bearings: These bearings have two rows of balls and higher load-carrying capacity compared to single-row types. They find use in applications requiring higher loads and moment resistance, such as larger cranes and construction machinery.
  • Three-Row Roller Slewing Bearings: These bearings use cylindrical rollers to handle heavy axial, radial, and moment loads. They are commonly found in heavy-duty applications like harbor cranes and mining equipment.
  • Cross Roller Slewing Bearings: These bearings have cylindrical rollers arranged in a crossed pattern between the inner and outer rings. They offer high stiffness and precision, making them suitable for applications like robotic arms and precision machinery.
  • Wire Race Slewing Bearings: These innovative bearings use a thin wire race to support the rolling elements. They are lightweight and compact, often used in medical equipment and aerospace applications.
  • Ball-And-Roller Combination Slewing Bearings: These hybrid bearings combine ball and roller elements to achieve a balance between load capacity and precision. They find use in various industrial machines and equipment.
  • Gearless Slewing Bearings: In some applications, slewing bearings incorporate no gears or teeth. They are used where external gear reduction is present or precise rotation isn’t required.
  • Geared Slewing Bearings: These bearings include internal gears or teeth that allow torque transmission between the inner and outer rings. They are essential in applications requiring controlled rotation, such as cranes and wind turbines.

The choice of slewing bearing type depends on factors like load requirements, available space, rotational precision, and the specific industrial application. Understanding the variations helps engineers select the most suitable bearing for optimal performance.

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editor by CX 2024-04-16

Slewing bearings

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