Three Row Cylindrical Roller Slewing Bearing

Categories Slewing Bearing, Three Row Cylindrical Roller Slewing Bearing

The three-row cylindrical roller slewing bearing is a large-scale slewing support component with high load-bearing capacity.

• The upper and lower rows of rollers mainly bear axial loads and overturning moments.

• The middle row of rollers is specially designed to bear radial loads, ensuring the stability of the bearing when subject to radial forces.

It is suitable for large-scale equipment with extremely high load requirements, such as port cranes, marine cranes, large excavators, wind power equipment and other heavy machinery.

Range of external diameter: 300mm to 6000mm

Ring material: 42CrMo / 50Mn/ C45

Ball/roller material: GCr15

Cage material: steel 20 or ZL102 cast aluminum alloy

Spacer material: nylon 6 / nylon 66

Quenching hardness of raceway: HRC55-62

Tooth type: no gear, internal gear, external gear

Delivery time: 15-30 days

Overview of Three Row Cylindrical Roller Slewing Bearing

A Three Row Cylindrical Roller Slewing Bearing is a type of bearing used in heavy machinery, particularly in cranes, excavators, and other large rotating equipment. The design of this bearing incorporates three rows of cylindrical rollers, which enhances its load-carrying capacity and provides better stability.

Features of Internal Gear Slewing Bearing

High Load Capacity:

The three-row design allows for the handling of a combination of axial, radial, and moment loads simultaneously. This significantly increases the load-bearing capacity compared to single-row slewing bearings.

Compact Structure:

Despite its high load-bearing capacity, the three-row cylindrical roller slewing bearing maintains a relatively compact structure, making it suitable for space-limited applications.

Optimized Load Distribution:

The three rows of rollers are arranged in a way that ensures a more even distribution of loads, which improves stability and helps in managing stress more efficiently.

Durability and Longevity:

The robust design of this bearing type allows it to withstand harsh operating conditions and heavy-duty applications, leading to an extended service life.

Superior Rotational Precision:

This bearing type ensures smooth and precise rotation, even under heavy loads, making it ideal for applications where high accuracy in movement is essential.

Self-aligning Capability:

The three-row design can accommodate some misalignment between the rotating and fixed components, offering greater tolerance for mechanical errors or deformations in the system.

Versatile Performance:

The bearing is capable of operating in both high-speed and low-speed environments, offering versatility in a variety of mechanical systems.

Enhanced Rigidity:

The multiple rows of cylindrical rollers provide excellent rigidity, which is important for applications requiring precise movement control and stability under varying loads.

Note:

n1 is the number of holes of lubricant, equally spaced, with oil cup M10×1 JB/T7940.1-JB/ T7940.2
The fastening holes n-dn1 and n-dn2 can be replaced by the tapped hole; the tooth width b can be changed to H-h.
The tangential force of the internal gear is the maximum tangential force; the rating tangential force is the half of the maximum tangential force.
The addendum modification coefficient of internal teeth is 0.2.

Techspecs of Three Row Cylindrical Roller Slewing Bearing:

Range of external diameter: 100 mm to 15000 mm.
Ring material: 42CrMo / 50Mn/ C45.
Ball/roller material: GCr15.
Cage material: steel 20 or ZL102 cast aluminum alloy.
Spacer material: nylon 6 / nylon 66.
Quenching hardness of raceway: HRC55-62.
Tooth type: no gear, internal gear, external gear.

Internal Gear

Bearing Model	Dimensions			Mounting Dimensions						Structural Dimension					Gear Data				Weight (kg)
Bearing Model	D (mm)	d (mm)	H (mm)	D1 (mm)	D2 (mm)	n	o	d (mm)	L (mm)	n1	D3 (mm)	d1 (mm)	H1 (mm)	h (mm)	b (mm)	x	M	De (mm)	Weight (kg)	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
133.32.1000	1164	836	182	1120	880	40	22	M20	40	970	959	5	10	40	120	0.5	10	784	79	680
133.32.1120	1284	956	182	1240	1000	40	22	M20	40	1090	1079	5	10	40	120	0.5	10	904	91	820
133.40.1250	1445	1055	220	1393	1107	45	26	M24	48	1213	100	5	10	50	150	0.5	12	988.8	83	1200
133.40.1400	1595	1205	220	1543	1257	45	26	M24	48	1363	1350	5	10	50	150	0.5	12	1145	96	1300
133.40.1600	1795	1405	220	1743	1457	48	26	M24	48	1563	1550	6	10	50	150	0.5	14	1336	96	1520
133.40.1800	1995	1605	220	1943	1657	48	26	M24	48	1763	1750	6	10	50	150	0.5	14	1532	110	1750
133.45.2000	2221	1779	231	2155	1845	60	33	M30	60	1967	1945	6	12	54	160	0.5	16	1702	107	2400
133.45.2240	2461	2019	231	2395	2085	60	33	M30	60	2207	2185	6	12	54	160	0.5	16	1926	121	2700
133.45.2500	2721	2279	231	2655	2345	72	33	M30	60	2467	2445	8	12	54	160	0.5	18	2185	120	3000
133.45.2800	3021	2579	231	2955	2645	72	33	M30	60	2767	2745	8	12	54	160	0.5	18	2491	139	3400
133.50.3150	3432	2868	270	3342	2958	72	45	M42	84	3104	3090	8	12	65	180	0.5	20	2768	139	5000
131.50.3550	3832	3268	270	3742	3358	72	45	M42	84	3504	3490	8	258	65	180	0.5	20	3168	159	5680
131.50.4000	4282	3718	270	4192	3808	80	45	M42	84	3954	3940	8	258	65	180	0.5	22	3610	165	6470
131.50.4500	4782	4218	270	4692	4308	80	45	M42	84	4454	4440	8	258	65	180	0.5	22	4110	165	7320

External Gear

Bearing Model	Dimensions			Mounting Dimensions						Structural Dimension					Gear data					weight (kg)
	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
132.25.500																	6	664.8	108
131.25.560	694	426	148	658	462	24	18	M16	32	597	586	4	138	32	80	0.5	5	724	142	240
132.25.560																	6	724.8	118
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
132.25.630																	8	806.4	98
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
132.25.710																	8	886.4	108
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
132.32.800																	10	1008	98
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
132.32.900																	10	1108	108
131.32.1000	1164	836	182	1120	880	40	22	M20	40	1041	1030	5	172	40	120	0.5	10	1218	119	680
132.32.1000																	12	1221.6	99
131.32.1120	1284	956	182	1240	1000	40	22	M20	40	1161	1150	5	172	40	120	0.5	10	1338	131	820
132.32.1120																	12	1341.6	109
131.40.1250	1445	1055	220	1393	1107	45	26	M24	48	1300	1287	5	210	50	150	0.5	12	150.6	123	1200
132.40.1250																	14	1509.2	105
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
132.40.1400																	14	1663.2	116
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
132.40.1600																	16	1868.8	114
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
132.40.1800																	16	2076.8	127
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
132.45.2000																	18	2300.4	125
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
132.45.2240																	18	2552.4	139
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
132.45.2500																	20	2816	138
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
132.45.2800																	20	3116	153
131.50.3150	3432	2868	270	3342	2958	72	45	M42	84	3213	3196	8	258	65	180	0.5	20	3536	174	50000
132.50.3150																	22	3537.6	158
131.50.3550	3832	3268	270	3742	3358	72	45	M42	84	3613	3596	8	258	65	180	0.5	22	3936	194	5680
132.50.3550																	22	393.6	176
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
132.50.4000																	25	4395	173
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
132.50.4500																	25	4895	193

Without Gear

Bearing Model	Dimensions			Mounting Dimensions						Structural Dimension					Weight (kg)
Bearing Model	Dmm	dmm	Hmm	D1mm	D2mm	n	mm	dmmm	Lmm	nl	D3mm	d1mm	H1mm	hmm	Weight (kg)
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	M3O	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
130.05.4000	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

1. Exceptional Load-Carrying Capacity

Three independent roller rows are designed to separately carry axial loads, radial loads, and overturning moments.
Load distribution is optimized, allowing the bearing to withstand very high static and dynamic loads.
Ideal for applications where load conditions are complex and severe.

2. Superior Overturning Moment Resistance

The axial roller rows are positioned with a large effective distance between raceways.
This structure provides outstanding resistance to tilting and overturning moments, even under eccentric or shock loading.

3. High Structural Rigidity and Stability

Line contact between cylindrical rollers and raceways ensures high stiffness and minimal deformation.
Maintains stable rotational accuracy under heavy-duty and continuous operation.

4. Long Service Life Under Harsh Conditions

Optimized internal geometry reduces contact stress and uneven load distribution.
Suitable for frequent start-stop operation, heavy impact loads, and low-speed rotation, extending fatigue life.

5. Separate Load Paths Improve Reliability

Each roller row is dedicated to a specific load direction, reducing mutual interference.
This design significantly improves operational reliability and safety margins for critical equipment.

6. Flexible Gear and Mounting Options

Available with internal gear, external gear, or gearless designs.
Mounting holes, seals, lubrication systems, and materials can be customized to match equipment requirements.

7. Simplified Maintenance and Inspection

Robust structure tolerates misalignment and installation deviations better than compact bearing types.
Suitable for long service intervals, reducing downtime and total cost of ownership.

Applications of Three Row Cylindrical Roller Slewing Bearing

Cranes:

Used in both mobile and tower cranes, where they facilitate the rotation of the crane’s boom or jib under heavy lifting loads.

Excavators:

Found in excavators to support the rotation of the upper structure relative to the lower chassis, especially in heavy-duty excavators handling large, difficult workloads.

Offshore Oil Rigs:

Used in rotating equipment for offshore platforms where reliability under harsh weather conditions and heavy moment loads is critical.

Wind Turbines:

In wind turbines, these bearings are used to allow smooth rotation of the turbine blades and nacelle, offering high load-carrying capacity while withstanding significant stresses.

Mining Equipment:

Heavy mining machinery, such as rotary drilling rigs, utilizes these bearings to ensure reliable rotation of large, heavy components under extreme conditions.

Construction Machinery:

These bearings are found in construction equipment like pile drivers, concrete mixers, and other machinery that requires rotational movement of large parts under heavy load.

Railway Turntables:

Used in railway turntables to provide smooth rotation and high load support for rotating railway tracks or vehicles.

Aerial Work Platforms (AWP):

Used in the slewing mechanisms of aerial platforms or boom lifts to ensure smooth and stable rotation of the lift arms.

Military and Aerospace Applications:

In military vehicles and aerospace equipment, the ability to support high axial and radial loads makes the three-row cylindrical roller slewing bearing useful in turrets, radar systems, and other rotational mechanisms.

Robotic Arms:

In industrial robotics, particularly those used for heavy material handling, these bearings are used to provide smooth and precise movement in the arm joints under heavy load.

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