The three-row roller slewing bearing is the slewing bearing with the strongest load-bearing capacity. The inner and outer rings are equipped with three rows of cylindrical rollers, which can withstand radial loads, axial loads and overturning loads, improving structural strength and operational reliability. The three-row roller slewing bearing can provide internal or external integrated transmission devices.
Three-Row Roller Slewing Bearing With External Gear
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
Three-Row Roller Slewing Bearing With Inner Gear
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
Three-Row Roller Slewing Bearing Without Gear
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
Three-row roller slewing bearing advantages
Slewing Bearing Features: Three-row roller slewing bearings have a higher load capacity than crossed roller slewing bearings. The LTZC three-row roller slewing bearing boasts the highest load-bearing capacity among all slewing bearings. It employs three independent rows of rollers, with the upper and lower rows bearing loads at a 90° angle, ensuring ample clearance for each roller and guaranteeing smooth operation and precise rotation.
Slewing Bearing Applications: The three-row cylindrical roller slewing bearing is designed to withstand extremely large radial/axial/tilting combined loads. The contact area and contact points between the rolling elements and raceways are far greater than those of single/double-row bearings. It is not designed for high speeds, but is primarily suited for slewing mechanisms in cranes, excavators, port machinery, and wind turbine mainframes, where rotational speeds are low (typically operating speed < 50 r/min, maximum speed < 200 r/min) and loads are extremely heavy.
Bearing manufacturing : The inner and outer rings of the LTZC three-row roller slewing bearing are typically made of materials such as 42CrMo, 50Mn, and 45# steel, undergoing quenching and tempering treatment to achieve a hardness between 170HB and 340HB,ensuring durability and a long service life. The rolling elements are typically made of GCr15 or GCr15SiMn bearing steel, with a hardness of 58-62HRC. The cage is usually made of nylon, and the seals are typically made of butyl rubber or fluororubber.
Customized Bearings: The LTZC engineering team can customize slewing bearings according to customer equipment requirements andprovide bearing CAD drawings. If parameters are unclear, we can conduct on-site surveys and develop a professional bearing selection plan. We also supportalternatives to international brand bearings, ensuring reliable performance and stable delivery times.
LTZC possesses a complete independent production system and large-scale precision machining capabilities. LTZC can produce large slewing bearings with diameters ranging from300mm to 15000mm and holds international certifications includingISO9001, 14001, 45001, CCS, BV, and ABS. LTZC bearings are suitable for marine engineering equipment, wind power, port machinery, construction machinery, and ultra-heavy-duty rotating structures. The products featurehigh load-bearing capacity, high stability, and long service life, meeting the continuous operation requirements under harsh working conditions.
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.
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.
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.
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.
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.
LTZC provides precision slewing bearings, precision robot bearing, customized bearing solutions, thin section bearing widely used in rotating equipment in the field of industrial automation.
LTZC specializes in manufacturing bearings of various sizes, LTZC specializes in developing marine-grade and defense-grade bearings designed to deliver exceptional strength, corrosion resistance, and long-term operational stability.
LTZC bearings are widely used in the aerospace field, LTZC is committed to providing high-precision, high-performance slewing bearing solutions for the aerospace and communications sectors.
LTZC offers high-performance slewing bearings, large diameter slewing bearings, wheel bearings, and slew ring solutions with competitive bearing prices and reliable manufacturing quality.
Feel free to get a quote on the latest price of slewing bearings for any largeapplications,
please include your application, needs, requirements and otherdetails.
WhatsApp
Eric.wang@ltzzc.com
0086-379-69950051
