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Heavy duty turntable bearing
Heavy duty turntable bearing Heavy duty turntable bearing

Heavy duty turntable bearing

Heavy-duty turntable bearings refer to a specialized type of large-scale slewing support device designed specifically to withstand exceptionally large axial loads, radial loads, and overturning moments. These bearings feature massive structural dimensions—with diameters ranging from 1 meter to over 10 meters—and possess the capability for low-speed, heavy-load rotation.

ItemSpecification / Material
Outer Diameter Range1000 mm ～ 15,000 mm
Ring Material42CrMo / 50Mn / C45
Ball / Roller MaterialGCr15
Cage Material20 Steel or ZL102 Cast Aluminum Alloy
Spacer MaterialNylon 6 / Nylon 66
Raceway HardnessHRC 55 – 62
Gear TypeGearless, Internal Gear, External Gear
Delivery Time10 – 30 Days


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Heavy duty turntable bearing

LTZC heavy duty turntable bearing Specifications

Bearing Model Dimensions Mounting Dimensions Structural Dimension Gear data Weight
Dmm dmm Hmm D1mm D2mm n omm dmmm Lmm n1 D3mm d1mm H1mm hmm bmm x Mmm Demm z
113.25.500 602 398 75 566 434 20 18 M16 32 4 498 502 65 10 60 0.5 5 367 74 80
113.25.560 662 458 75 626 494 20 18 M16 32 4 558 562 65 10 60 0.5 5 427 86 90
113.25.630 732 528 75 696 564 24 18 M16 32 4 628 632 65 10 60 0.5 6 494.4 83 100
113.25.710 812 608 75 776 644 24 18 M16 32 4 708 712 65 10 60 0.5 6 572.4 96 110
113.28.800 922 678 82 878 722 30 22 M20 40 6 798 802 72 10 65 0.5 8 635.2 80 170
113.28.900 1022 778 82 978 822 30 22 M20 40 6 898 902 72 10 65 0.5 8 739.2 93 190
113.28.1000 1122 878 82 1078 922 36 22 M20 40 6 998 1002 72 10 65 0.5 10 824 83 210
113.28.1120 1242 998 82 1198 1042 36 22 M20 40 6 1118 1122 72 10 65 0.5 10 944 95 230
113.32.1250 1390 1110 91 1337 1163 40 26 M24 48 5 1248 1252 81 10 75 0.5 12 1048.8 88 350
113.32.1400 1540 1260 91 1487 1313 40 26 M24 48 5 1398 1402 81 10 75 0.5 12 1192.8 100 400
113.32.1600 1740 1460 91 1687 1513 45 26 M24 48 5 1598 1602 81 10 75 0.5 14 1391.6 100 440
113.32.1800 1940 1660 91 1887 1713 45 26 M24 48 5 1798 1802 81 10 75 0.5 14 1573.6 113 500
113.40.2000 2178 1825 112 2110 1891 48 33 M30 60 8 1997 2003 100 12 90 0.5 16 1734.4 109 900
113.40.2240 2418 2065 112 2350 2131 48 33 M30 60 8 2237 2243 100 12 90 0.5 16 1990.4 125 1000
113.40.2500 2678 2325 112 2610 2391 56 33 M30 60 8 2497 2503 100 12 90 0.5 18 2239.2 125 1100
113.40.2800 2978 2625 112 2910 2691 56 33 M30 60 8 2797 2803 100 12 90 0.5 18 2527.2 141 1250
113.50.3150 3376 2922 134 3286 3014 56 45 M42 84 8 3147 3153 122 12 110 0.5 20 2628 14 2150
113.50.3550 3776 3322 134 3686 3414 56 45 M42 84 8 3547 3553 122 12 110 0.5 20 3228 162 2470
113.50.4000 4226 3772 134 4136 3864 60 45 M42 84 10 3997 4003 122 12 110 0.5 22 3660.8 16 2800
113.50.4500 4726 4272 134 4636 4364 60 45 M42 84 10 4497 4503 122 12 110 0.5 22 4166.8 190 3100

LTZC heavy duty turntable bearing Specifications

Bearing Model Dimensions Mounting Dimensions Structural Dimension Gear data weight
Dmm dmm Hmm D1mm D2mm n omm dmmm Lmm n1 D3mm d1mm H1mm hmm bmm x Mmm Demm z
113.25.500 602 398 75 566 434 20 18 M16 32 4 498 502 65 10 60 0.5 5 367 74 80
113.25.560 662 458 75 626 494 20 18 M16 32 4 558 562 65 10 60 0.5 5 427 86 90
113.25.630 732 528 75 696 564 24 18 M16 32 4 628 632 65 10 60 0.5 6 494.4 83 100
113.25.710 812 608 75 776 644 24 18 M16 32 4 708 712 65 10 60 0.5 6 572.4 96 110
113.28.800 922 678 82 878 722 30 22 M20 40 6 798 802 72 10 65 0.5 8 635.2 80 170
113.28.900 1022 778 82 978 822 30 22 M20 40 6 898 902 72 10 65 0.5 8 739.2 93 190
113.28.1000 1122 878 82 1078 922 36 22 M20 40 6 998 1002 72 10 65 0.5 10 824 83 210
113.28.1120 1242 998 82 1198 1042 36 22 M20 40 6 1118 1122 72 10 65 0.5 10 944 95 230
113.32.1250 1390 1110 91 1337 1163 40 26 M24 48 5 1248 1252 81 10 75 0.5 12 1048.8 88 350
113.32.1400 1540 1260 91 1487 1313 40 26 M24 48 5 1398 1402 81 10 75 0.5 12 1192.8 100 400
113.32.1600 1740 1460 91 1687 1513 45 26 M24 48 5 1598 1602 81 10 75 0.5 14 1391.6 100 440
113.32.1800 1940 1660 91 1887 1713 45 26 M24 48 5 1798 1802 81 10 75 0.5 14 1573.6 113 500
113.40.2000 2178 1825 112 2110 1891 48 33 M30 60 8 1997 2003 100 12 90 0.5 16 1734.4 109 900
113.40.2240 2418 2065 112 2350 2131 48 33 M30 60 8 2237 2243 100 12 90 0.5 16 1990.4 125 1000
113.40.2500 2678 2325 112 2610 2391 56 33 M30 60 8 2497 2503 100 12 90 0.5 18 2239.2 125 1100
113.40.2800 2978 2625 112 2910 2691 56 33 M30 60 8 2797 2803 100 12 90 0.5 18 2527.2 141 1250
113.50.3150 3376 2922 134 3286 3014 56 45 M42 84 8 3147 3153 122 12 110 0.5 20 2628 14 2150
113.50.3550 3776 3322 134 3686 3414 56 45 M42 84 8 3547 3553 122 12 110 0.5 20 3228 162 2470
113.50.4000 4226 3772 134 4136 3864 60 45 M42 84 10 3997 4003 122 12 110 0.5 22 3660.8 16 2800
113.50.4500 4726 4272 134 4636 4364 60 45 M42 84 10 4497 4503 122 12 110 0.5 22 4166.8 190 3100
114.50.4500 4726 4272 134
 4636 4364 60 45 M42 84 10 4497 4503 122 12 110 0.5 25 4160 167
 3100

LTZC heavy duty turntable bearing Specifications

Bearing Model Dimensions Mounting Dimensions Structural Dimension Gear data Weight
Dmm dmm Hmm D1mm D2mm n omm dmmm Lmm n1 D3mm d1mm H1mm hmm bmm x Mmm Demm z
131.25.500 634 366 148 598 402 24 18 M16 32 537 526 4 138 32 80 0.5 5 664 130 224
131.25.560 694 426 148 658 462 24 18 M16 32 597 586 4 138 32 80 0.5 5 724 142 240
131.25.630 764 496 148 728 532 28 18 M16 32 667 656 4 138 32 80 0.5 6 808.8 132 270
131.25.710 844 576 148 808 612 28 18 M16 32 747 736 4 138 32 80 0.5 6 886.8 145 300
131.32.800 964 636 182 920 680 36 22 M20 40 841 830 4 172 40 120 0.5 8 1006.4 123 500
131.32.900 1064 736 182 1020 780 36 22 M20 40 941 930 4 172 40 120 0.5 8 1102.4 135 600
131.32.1000 1164 836 182 1120 880 40 22 M20 40 1041 1030 5 172 40 120 0.5 10 1218 119 680
131.32.1120 1284 956 182 1240 1000 40 22 M20 40 1161 1150 5 172 40 120 0.5 10 1338 131 820
131.40.1250 1445 1055 220 1393 1107 45 26 M24 48 1300 1287 5 210 50 150 0.5 12 1506 123 1200
131.40.1400 1595 1205 220 1543 1257 45 26 M24 48 1450 1437 5 210 50 150 0.5 12 1665.6 136 1300
131.40.1600 1795 1405 220 1743 1457 48 26 M24 48 1650 1637 6 210 50 150 0.5 14 1873.2 131 1520
131.40.1800 1995 1605 220 1943 1657 48 26 M24 48 1850 1837 6 210 50 150 0.5 14 2069.2 145 1750
131.45.2000 2221 1779 231 2155 1845 60 33 M30 60 2055 2033 6 219 54 160 0.5 16 2300.8 141 2400
131.45.2240 2461 2019 231 2395 2085 60 33 M30 60 2295 2273 6 219 54 160 0.5 16 2556.8 157 2700
131.45.2500 2721 2279 231 2655 2345 72 33 M30 60 2555 2533 8 219 54 160 0.5 18 2822.4 154 3000
131.45.2800 3021 2579 231 2955 2645 72 33 M30 60 2855 2833 8 219 54 160 0.5 18 3110.4 170 3400
131.50.3150 3432 2868 270 3342 2958 72 45 M42 84 3213 3196 8 258 65 180 0.5 20 3536 174 50000
131.50.3550 3832 3268 270 3742 3358 72 45 M42 84 3613 3596 8 258 65 180 0.5 22 3936 194 5680
131.50.4000 4282 3718 270 4192 3808 80 45 M42 84 4063 4046 8 258 65 180 0.5 22 4395.6 197 6470
131.50.4500 4782 4218 270 4692 4308 80 45 M42 84 4563 4546 8 258 65 180 0.5 22 4901.6 220 7320

LTZC heavy duty turntable bearing Specifications

Bearing Model Dimensions Mounting Dimensions Structural Dimension Gear data Weight
Dmm dmm Hmm D1mm D2mm n omm dmmm Lmm n1 D3mm d1mm H1mm hmm bmm x Mmm Demm z
133.25.500 634 366 148 598 402 24 18 M16 32 474 463 4 0 32 80 0.5 5 337 68 224
133.25.560 694 426 148 658 462 24 18 M16 32 534 523 1 10 32 80 0.5 5 397 80 240
133.25.630 764 496 148 728 532 28 18 M16 32 604 593 4 10 32 80 0.5 6 458.4 77 270
133.25.710 844 576 148 808 612 28 18 M16 32 684 673 4 10 32 80 0.5 6 536.4 90 300
133.32.800 964 636 182 920 680 36 22 M20 40 770 759 4 10 40 120 0.5 8 595.2 75 500
133.32.900 1064 736 182 1020 780 36 22 M20 40 870 859 4 10 40 120 0.5 8 691.2 87 600
133.32.100 1164 836 182 1120 880 40 22 M20 40 970 959 5 10 40 120 0.5 10 784 79 680
133.32.112 1284 956 182 1240 1000 40 22 M20 40 1090 1079 5 10 40 120 0.5 10 904 91 820
133.40.125 1445 1055 220 1393 1107 45 26 M24 48 1213 100 5 10 50 150 0.5 12 988.8 83 1200
133.40.140 1595 1205 220 1543 1257 45 26 M24 48 1363 1350 5 10 50 150 0.5 12 1145 96 1300
133.40.160 1795 1405 220 1743 1457 48 26 M24 48 1563 1550 6 10 50 150 0.5 14 1336 96 1520
133.40.180 1995 1605 220 1943 1657 48 26 M24 48 1763 1750 6 10 50 150 0.5 14 1532 110 1750
133.45.200 2221 1779 231 2155 1845 60 33 M30 60 1967 1945 6 12 54 160 0.5 16 1702 107 2400
133.45.224 2461 2019 231 2395 2085 60 33 M30 60 2207 2185 6 12 54 160 0.5 16 1926 121 2700
133.45.250 2721 2279 231 2655 2345 72 33 M30 60 2467 2445 8 12 54 160 0.5 18 2185 12 3000
133.45.280 3021 2579 231 2955 2645 72 33 M30 60 2767 2745 8 12 54 160 0.5 18 2491 139 3400
133.50.315 3432 2868 270 3342 2958 72 45 M42 84 3104 3090 8 12 65 180 0.5 20 2768 139 5000
131.50.355 3832 3268 270 3742 3358 72 45 M42 84 3504 3490 8 258 65 180 0.5 20 3168 159 5680
131.50.400 4282 3718 270 4192 3808 80 45 M42 84 3954 3940 8 258 65 180 0.5 22 311 165 6470
131.50.450 4782 4218 270 4692 4308 80 45 M42 84 4454 4440 8 258 65 180 0.5 22 4123 188 7320

LTZC heavy duty turntable bearing Specifications

Bearing Model Dimensions Mounting Dimensions Structural Dimension Weight (kg)
Dmm dmm Hmm D1mm D2mm n mm dmmm Lmm nl D3mm d1mm H1mm hmm
130.25.500 634 366 148 598 402 24 18 M16 32 474 463 4 10 32 224
130.25.560 694 426 148 658 462 24 18 M16 32 534 523 4 10 32 240
130.25.630 764 496 148 728 532 28 18 M16 32 604 593 4 10 32 270
130.25.710 844 576 148 808 612 28 18 M16 32 684 673 4 10 32 300
130.32.800 964 636 182 920 680 36 22 M20 40 770 759 4 10 40 500
130.32.900 1064 736 182 1020 780 36 22 M20 40 870 859 4 10 40 600
130.32.1000 1164 836 182 1120 880 40 22 M20 40 970 959 5 10 40 680
130.32.1120 1284 956 182 1240 1000 40 22 M20 40 1090 1079 5 10 40 820
130.40.1250 1445 1055 220 1393 1107 45 26 M24 48 1213 1200 5 10 50 1200
130.40.1400 1595 1205 220 1543 1257 45 26 M24 48 1363 1350 5 10 50 1300
130.40.1600 1795 1405 220 1743 1457 48 26 M24 48 1563 1550 6 10 50 1520
130.40.1800 1995 1605 220 1943 1657 48 26 M24 48 1763 1750 6 10 50 1750
130.45.2000 2221 1779 231 2155 1845 60 33 M30 60 1967 1945 6 12 54 2400
130.45.2240 2461 2019 231 2395 2085 60 33 M30 60 2207 2185 6 12 54 2700
130.45.2500 2721 2279 231 2655 2345 72 33 M30 60 2467 2445 8 12 54 3000
130.45.2800 3021 2579 231 2955 2645 72 33 M30 60 2767 2745 8 12 54 3400
130.50.3150 3432 2868 270 3342 2958 72 45 M42 84 3104 3090 8 12 65 5000
130.50.3550 3832 3268 270 3742 3358 72 45 M42 84 3504 3490 8 258 65 5680
130.50.4000 4282 3718 270 4192 3808 80 45 M42 84 3954 3940 8 258 65 6470
130.50.4500 4782 4218 270 4692 4308 80 45 M42 84 4454 4440 8

258

65 7320

What are heavy duty turntable bearings?

Heavy-duty slewing bearings constitute a high-load-bearing slewing support system capable of withstanding operating conditions characterized by extreme loads, massive dimensions, and low-speed rotation. These extra-large slewing bearings are primarily utilized in applications involving extreme heavy loads and continuous operations—such as in metallurgy, shield tunneling machinery, and large-scale lifting equipment.

Differences Between LTZC Heavy Duty Turntable Bearings and Standard Slewing Bearings

Comparison Item LTZC Heavy Duty Turntable Bearings Standard Slewing Bearings
Definition High-duty slewing bearings specially designed for extremely heavy-duty and harsh working conditions Standard slewing bearings used for general rotating equipment
Main Features Ultra-high load capacity, impact resistance, long service life, low-speed heavy-duty rotation Versatile, cost-effective, suitable for medium and light loads
Load Capacity Can withstand extremely high axial loads, radial loads, and tilting moments Relatively lower load capacity
Structural Type Mainly uses three-row roller, ball-roller combination, and reinforced raceway structures Mainly uses single-row ball slewing bearing and four-point contact ball slewing bearing
Rolling Element Design Large-size rollers or reinforced steel balls Standard steel balls or rollers
Material Strength Uses high-strength forged materials such as 42CrMo and 50Mn Mostly standard bearing steel
Heat Treatment Process Deep hardening, quenching & tempering, reinforced raceway treatment Conventional surface hardening
Impact Resistance Excellent, suitable for frequent shock loads Moderate
Rotational Speed Designed for low-speed heavy-duty operation Suitable for medium and low-speed operation
Precision Grade Capable of high-precision operation Mostly standard industrial precision
Customization Capability Can be custom-designed according to working conditions Mainly standardized models
Typical Applications Port machinery, tunnel boring machines, offshore platforms, mining equipment, wind power, large cranes Small construction machinery and general automation equipment
Operating Environment Suitable for dusty, high-impact, and heavy-load environments Suitable for normal industrial environments

Applications of Heavy-Duty Turntable Bearings

1. Large-scale Lifting Equipment

Equipment such as large crawler cranes, tower cranes, and port cranes requires their slewing mechanisms to continuously withstand immense overturning moments and heavy-load impacts, often operating in continuous rotation for extended periods.

2. Mining Machinery

Mining equipment—including large excavators, stacker-reclaimers, crushers, and bucket-wheel excavators—operates under harsh conditions characterized by heavy dust and strong impacts, placing extremely high demands on the stability of the slewing bearings. LTZC's heavy-duty slewing bearings are engineered to handle high impact loads and resist dust contamination, thereby ensuring the stable operation of heavy-duty machinery.

3. Wind Power Equipment

Large-scale wind turbine installation platforms, as well as yaw and pitch control systems, require high-precision, large-diameter slewing bearings.

4. Marine Engineering and Shipbuilding Equipment

Marine engineering equipment operates continuously in environments characterized by high salt spray and humidity, necessitating exceptionally high standards for bearing corrosion resistance and sealing performance. LTZC's extra-heavy-duty slewing bearings feature highly secure sealing and lubrication systems that effectively prevent seawater corrosion and the ingress of debris into the bearing interior.

5. Shield Tunneling Machines and Tunneling Equipment

The main drive systems of shield tunneling machines require ultra-large, high-rigidity slewing bearings capable of delivering ultra-high torque and featuring a robust, high-stiffness structural design.

6. Amusement Rides and Large Rotating Platforms

Large-scale amusement facilities—such as Ferris wheels, observation platforms, and rotating rides—require slewing bearings capable of ensuring smooth, low-speed operation and high levels of safety.


Why choose LTZC bearings？

A Trusted Brand

With over 20 years of experience in bearing R&D, our global service network covers countries such as India and Russia, ensuring fast and efficient technical support for all bearing issues and ensuring the smooth operation of your equipment.

High-Quality Bearings

Advanced CNC production equipment and manufacturing processes guarantee bearing precision and durability. LTZC bearings also carry third-party testing reports to ensure they meet international standards.


Product Range

LTZC products include slewing bearings, slewing drives, precision thin-wall bearings, and custom bearings. They are widely used in cranes, heavy machinery, and port machinery, maintaining stable performance under harsh operating conditions.

Custom Bearings

Our experienced technical team provides customized bearing solutions for complex applications. Services include load analysis and bearing selection, service life calculations, 3D design, and engineering drawings.


LTZC slewing bearing manufacturer

LTZC Bearings is a trusted bearing manufacturer specializing in slewing bearings, slewing drives, and precision bearings. With advanced CNC machining equipment, comprehensive heat treatment, and strict quality control, our products meet international standards and are ISO certified.

We export high-quality industrial bearings to Germany, India, Russia, and Canada, earning over 10,000 satisfied customer feedbacks. With strong OEM and ODM capabilities, LTZC provides fast delivery and custom bearing solutions for heavy machinery, construction, and automation industries.

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Customized bearing solutions

Customized bearing solutions

LTZC is a professional slewing bearing manufacturer，providing a full range of custom bearing services, including slewing rings, non-standard bearings, large bearings, thin-section bearings, crossed roller bearings, and four-point contact ball bearings. Whether the requirements are special sizes, materials, or complex operating conditions, we can provide customers with the optimal solution through professional R&D and precision manufacturing.

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