High Load Slewing Bearings
Zhengzhou Sinomach Precision Industry Development Co., Ltd. is a professional slewing bearing (turntable bearing) manufacturer, providing reliable bearing solutions for heavy-duty and low-speed rotation applications. We support standard models and fully customized slewing bearings, manufactured according to drawings, load calculations, and application requirements.
Keywords:
High Load Slewing Bearings
Series:
Product Details
Slewing bearing types:
The slewing bearings produced by our company can be divided into: single row four point contact ball slewing bearings, single row crossed roller slewing bearings, double-row different-diameter ball slewing bearings, three-row cylindrical roller combined slewing bearings, ball-roller combined slewing bearings, etc. Each type of bearing is divided into toothless type, external tooth type and internal tooth type according to whether it has teeth and the position of the teeth.
| Specification | Details |
|---|---|
| Bearing type | Single row four point contact ball slewing bearings, single row crossed roller slewing bearings, double-row different-diameter ball slewing bearings, three-row cylindrical roller combined slewing bearings, ball-roller combined slewing bearings. |
| Tooth Type | Gearless Type, External Gear Type, Internal Gear Type (including structural characteristics like four-point contact) |
| Processing dimensions | Full size. Maximum diameter up to 10 meters. |
| Material of Slewing Ring | 42CrMo steel/ 50Mn |
| Material of Rolling Elements | GCr15 or GCr15SiMn |
| Material of Cage | 20 steel, ZL102 cast aluminum alloy, HPb59-1 |
| Seal material | Stainless steel, nylon, NBR |
| Temperature Range | -30°C - +150°C |
Single row four point contact ball slewing bearing
Features: It has a high dynamic load bearing capacity and can withstand radial force, axial force and large overturning moment. This type of bearing is mainly used in lifting equipment, hoisting equipment, general engineering machinery and other fields.
Single row crossed roller slewing bearings
Features: It can withstand large radial forces, medium axial forces and overturning moments, and can meet the requirements of small clearance or "zero" clearance. This type of bearing is mainly used in lifting equipment, hoisting equipment and general engineering machinery.
Double row different-diameter ball slewing bearings
Features: This type of bearing has a simple structure and strong static load capacity. This type of bearing is mainly used in situations where the load position and direction change rapidly and rotate continuously, such as: marine hoisting equipment, mining hoisting equipment and material transportation, etc.
Three row cylindrical roller combined slewing bearing
Features: It has high load-bearing capacity. Various loads are borne by different raceways and roller groups respectively. Therefore, under the same force conditions, the bearing diameter can be greatly reduced, making the main machine more compact. It is mainly used in lifting equipment, hoisting machinery, mining equipment and material transportation, offshore operations and general engineering machinery.
Ball-roller combined slewing bearings
Features: It can bear high axial load and small overturning moment, and usually has a large diameter. It is mainly used in mining and material processing industries.
Production capacity of Slewing Bearing
The production workshop covers an area of over 30,000 square meters and has more than 200 sets of various production equipment.
Technical Advantages
Our large bearing R&D team has long been committed to fundamental theoretical research such as bearing and shaft system simulation analysis, helping customers from product design onwards with technical support including scheme design, theoretical calculation, simulation analysis, and providing complete solutions for transmission systems.
Materials and Heat Treatment Process Research
We possess an internationally recognized Austrian Aichelin heat treatment production line. Through research on the properties of different materials and heat treatment processes, we continuously improve heat treatment parameters, forming a complete set of heat treatment process methods that effectively enhance the impact resistance and fatigue resistance of materials.
Quality control of Slewing Bearing
It maintains a leading domestic position in bearing fundamental theory, lubrication technology, design analysis, material application and failure analysis, testing technology and technical standards. Its products and services have obtained ISO9001, AS9100, and IATF16949 quality certifications.
Coordinate measuring machine
3D image scanner
Length measuring machine
Profilometer
Raceway profiler
Scanning electron microscope
Hardened layer depth gauge
Cylindricity tester
UT flaw detection
Magnetic particle testing
Immersion Ultrasonic Testing
Temperature-controlled clean assembly room
Materials of Slewing Bearing
To ensure optimal performance and reliability, ZYSINT slewing bearings are manufactured using carefully selected materials for each component:
⯁ Material of Slewing Ring
The slewing rings are primarily made from 42CrMo steel, which undergoes surface quenching to enhance the hardness and wear resistance of the raceway. Depending on the customer's requirements and the specific working conditions, other types of surface-quenched steels can also be utilized to meet various application needs.
⯁ Material of Rolling Elements
The rolling elements used in ZYSINT slewing bearings are made from high-quality bearing steels such as GCr15 or GCr15SiMn, offering excellent fatigue resistance and hardness to ensure long service life under demanding conditions.
⯁ Material of Cage
A variety of cage designs are available, including integrated cages, segmented cages, and spacers, each selected according to the application and bearing structure.
For integrated and segmented cages, the materials commonly used are 20 steel or ZL102 cast aluminum alloy.
Spacers are typically manufactured from materials such as polyamide 1010 resin, ZL102 aluminum bronze, QA110-3-1.5 aluminum bronze, or GRPA66-25 nylon, chosen for their strength, wear resistance.
⯁ Material of Sealing Ring
The sealing rings are made from Nitrile Butadiene Rubber (NBR), which provides excellent resistance to oil, abrasion, and a wide range of temperatures, ensuring effective sealing performance in various environments.
Key Advantages of Our Slewing Bearings
Our slewing bearings are engineered for demanding industrial environments, focusing on load capacity, durability, and long service life.
1. High Load Capacity
Designed to handle axial load, radial load, and overturning moment simultaneously, suitable for heavy-duty equipment.
2. Large Diameter Customization
Outer diameter range up to 11mm, inner structure optimized based on load and installation conditions.
3. Long Service Life
Optimized raceway geometry and heat treatment ensure stable fatigue performance under continuous operation.
4. High Gear Accuracy
Gear machining accuracy up to Grade P4, ensuring smooth transmission and reduced vibration.
5. Harsh Environment Adaptability
Optional enhanced sealing and surface treatment for outdoor, dusty, and humid working conditions.
📌 All parameters can be adjusted according to load calculation and application requirements.
Slewing Bearings for Different Industries
1. Wind Turbine Slewing Bearings
Used in yaw and pitch systems, featuring:
High fatigue life
Stable performance under variable loads
Long-term outdoor reliability
2. Slewing Bearings for Cranes & Construction Machinery
High axial and overturning moment capacity
Smooth rotation under heavy load
Optimized gear accuracy for drive systems
3. Industrial & Heavy Equipment Applications
Customized dimensions and structure
Low maintenance design
Stable performance for continuous operation
Frequently Asked Questions (FAQ)
Q1: Do you provide customized slewing bearings?
Yes. We manufacture slewing bearings based on drawings, load requirements, and application conditions.
Q2: What is your MOQ?
MOQ depends on bearing size and structure. Trial orders are available.
Q3: Which standards do you follow?
ISO, DIN, EN standards, or customer-specified requirements.
Q4: What is the typical lead time?
Standard models: 2–3 weeks
Customized bearings: 4–6 weeks
Q5: Do you support OEM branding?
Yes. OEM and private labeling services are supported.
Technical Parameters of Slewing Bearings
Basic Code | Dimensions | Gear | External gear | Inner gear | Weight | ||||||||||||||
Without gear | External gear | Inner gear | D | d | T | D1 | d1 | n | dn | n1 | H | h | b | m | Da | z | da | z | |
010.30.500 | 011.30.500 | 013.30.500 | 602 | 398 | 80 | 566 | 434 | 20 | 18 | 4 | 70 | 10 | 60 | 5 | 629 | 123 | 367 | 74 | 75.8 |
012.30.500 | 014.30.500 | 6 | 628.8 | 102 | 368.4 | 62 | |||||||||||||
010.30.560 | 011.30.560 | 013.30.560 | 662 | 458 | 80 | 626 | 494 | 20 | 18 | 4 | 70 | 10 | 60 | 5 | 689 | 135 | 427 | 86 | 94 |
012.30.560 | 014.30.560 | 6 | 688.8 | 112 | 428.4 | 72 | |||||||||||||
010.30.630 | 011.30.630 | 013.30.630 | 732 | 528 | 80 | 696 | 564 | 24 | 18 | 4 | 70 | 10 | 60 | 6 | 772.8 | 126 | 494.4 | 83 | 110 |
012.30.630 | 014.30.630 | 8 | 774.4 | 94 | 491.2 | 62 | |||||||||||||
010.30.710 | 011.30.710 | 013.30.710 | 812 | 608 | 80 | 776 | 644 | 24 | 18 | 4 | 70 | 10 | 60 | 6 | 850.8 | 139 | 572.4 | 96 | 120 |
012.30.710 | 014.30.710 | 8 | 854.4 | 104 | 571.2 | 72 | |||||||||||||
010.40.800 | 011.40.800 | 013.40.800 | 922 | 678 | 100 | 878 | 722 | 30 | 22 | 6 | 90 | 10 | 80 | 8 | 966.4 | 118 | 635.2 | 80 | 256 |
012.40.800 | 014.40.800 | 10 | 968 | 94 | 634 | 64 | |||||||||||||
010.40.900 | 011.40.900 | 013.40.900 | 1022 | 778 | 100 | 978 | 822 | 30 | 22 | 6 | 90 | 10 | 80 | 8 | 1062.4 | 130 | 739.2 | 93 | 240 |
012.40.900 | 014.40.900 | 10 | 1068 | 104 | 734 | 74 | |||||||||||||
010.40.1000 | 011.40.1000 | 013.40.1000 | 1122 | 878 | 100 | 1078 | 922 | 36 | 22 | 6 | 90 | 10 | 80 | 10 | 1188 | 116 | 824 | 83 | 305 |
012.40.1000 | 014.40.1000 | 12 | 1185.6 | 96 | 820.8 | 69 | |||||||||||||
010.40.1120 | 011.40.1120 | 013.40.1120 | 1242 | 998 | 100 | 1198 | 1042 | 36 | 22 | 6 | 90 | 10 | 80 | 10 | 1298 | 127 | 944 | 95 | 300 |
012.40.1120 | 014.40.1120 | 12 | 1305.6 | 106 | 940.8 | 79 | |||||||||||||
010.45.1250 | 011.45.1250 | 013.45.1250 | 1390 | 1110 | 110 | 1337 | 1163 | 40 | 26 | 5 | 100 | 10 | 90 | 12 | 1449.6 | 118 | 1048.8 | 88 | 420 |
012.45.1250 | 014.45.1250 | 14 | 1453.2 | 101 | 1041.6 | 75 | |||||||||||||
010.45.1400 | 011.45.1400 | 013.45.1400 | 1540 | 1260 | 110 | 1487 | 1313 | 40 | 26 | 5 | 100 | 10 | 90 | 12 | 1605.6 | 131 | 1192.8 | 100 | 480 |
012.45.1400 | 014.45.1400 | 14 | 1607.2 | 112 | 1195.6 | 86 | |||||||||||||
010.45.1600 | 011.45.1600 | 013.45.1600 | 1740 | 1460 | 110 | 1687 | 1513 | 45 | 26 | 5 | 100 | 10 | 90 | 14 | 1817.2 | 127 | 1391.6 | 100 | 550 |
012.45.1600 | 014.45.1600 | 16 | 1820.8 | 111 | 1382.4 | 87 | |||||||||||||
010.45.1800 | 011.45.1800 | 013.45.1800 | 1940 | 1660 | 110 | 1887 | 1713 | 45 | 26 | 5 | 100 | 10 | 90 | 14 | 2013.2 | 141 | 1573.6 | 113 | 610 |
012.45.1800 | 014.45.1800 | 16 | 2012.8 | 123 | 1574.4 | 99 | |||||||||||||
010.60.2000 | 011.60.2000 | 013.60.2000 | 2178 | 1825 | 144 | 2110 | 1891 | 48 | 33 | 8 | 132 | 12 | 120 | 16 | 2268.8 | 139 | 1734.4 | 109 | 1100 |
012.60.2000 | 014.60.2000 | 18 | 2264.4 | 123 | 1735.2 | 97 | |||||||||||||
010.60.2240 | 011.60.2240 | 013.60.2240 | 2418 | 2065 | 144 | 2350 | 2131 | 48 | 33 | 8 | 132 | 12 | 120 | 16 | 2492.8 | 153 | 1990.4 | 125 | 1250 |
012.60.2240 | 014.60.2240 | 18 | 2498.4 | 136 | 1987.2 | 111 | |||||||||||||
010.60.2500 | 011.60.2500 | 013.60.2500 | 2678 | 2325 | 144 | 2610 | 2391 | 56 | 33 | 8 | 132 | 12 | 120 | 18 | 2768.4 | 151 | 2239.2 | 125 | 1400 |
012.60.2500 | 014.60.2500 | 20 | 2776 | 136 | 2228 | 112 | |||||||||||||
010.60.2800 | 011.60.2800 | 013.60.2800 | 2978 | 2625 | 144 | 2910 | 2691 | 56 | 33 | 8 | 132 | 12 | 120 | 18 | 3074.4 | 168 | 2527.2 | 141 | 1600 |
012.60.2800 | 014.60.2800 | 20 | 3076 | 151 | 2528 | 127 | |||||||||||||
010.75.3150 | 011.75.3150 | 013.75.3150 | 3376 | 2922 | 174 | 3286 | 3014 | 56 | 45 | 8 | 162 | 12 | 150 | 20 | 3476 | 171 | 2828 | 142 | 2800 |
012.75.3150 | 014.75.3150 | 22 | 3471.6 | 155 | 2824.8 | 129 | |||||||||||||
010.75.3550 | 011.75.3550 | 013.75.3550 | 3776 | 3322 | 174 | 3686 | 3414 | 56 | 45 | 8 | 162 | 12 | 150 | 20 | 3876 | 191 | 3228 | 162 | 3200 |
012.75.3550 | 014.75.3550 | 22 | 3889.6 | 174 | 3220.8 | 147 | |||||||||||||
010.75.4000 | 011.75.4000 | 013.75.4000 | 4226 | 3772 | 174 | 4136 | 3864 | 60 | 45 | 8 | 162 | 12 | 150 | 22 | 4329.6 | 194 | 3660.8 | 167 | 3600 |
012.75.4000 | 014.75.4000 | 25 | 4345 | 171 | 3660 | 147 | |||||||||||||
010.75.4500 | 011.75.4500 | 013.75.4500 | 4726 | 4272 | 174 | 4636 | 4364 | 60 | 45 | 10 | 162 | 12 | 150 | 22 | 4835.6 | 217 | 4166.8 | 190 | 4000 |
012.75.4500 | 014.75.4500 | 25 | 4845 | 191 | 4160 | 167 | |||||||||||||
Get Technical Support & Quotation
Looking for a reliable slewing bearing manufacturer for your project?
Send us your drawings, load conditions, or application details — our engineers will provide a suitable solution.
👉 Request a Quote | Get Technical Support
Email: info@zys.com.cn
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Headquarter: East Wing Building, No. 121 Wutong Street, High-Tech Industrial Development Zone, Zhengzhou City, Henan Province, China
No. 1 Factory Address: No. 6 Fenghua Road, Luoyang City, Henan Province, China
No. 2 Factory Address: No. 1 Sanxi Road, Science and Technology Industrial Park, Jianxi District, Luoyang City, Henan Province, China
No. 3 Factory Address: Yibin Industrial Technology Park, Yibin District, Luoyang City, Henan Province, China
