/ Double row ball slewing bearings

Large Diameter Slewing Bearing

1.Product Introduction: Large slewing bearings with an outer ring diameter of ≥2000mm, suitable for heavy-duty equipment, capable of bearing high-strength loads and overturning moments, impact-resistant and with a long service life.
2.Structure Type: It has a thick-wall annular shape (wall thickness ≥50mm). The inner and outer rings are integrally forged from 42CrMo steel, with built-in double-row or triple-row rollers, heavy-duty metal seals, and the mounting holes are countersunk (suitable for bolts above M24).
3.Size Range: Outer ring diameter: 2000 - 6000mm, inner ring diameter: 1850 - 5800mm, height: 80 - 200mm.
4.Material: Inner ring /outer ring: 50Mn, 42CrMo; rolling elements: GCr15，GCr15SiMn (optional for impact resistance); seals: nitrile rubber, fluororubber (optional for oil and high temperature resistance).
5.Application Fields: Large port cranes, mining machinery, wind power main units (above 5MW), heavy-duty crawler cranes.
6.Key Inspection Items: Flaw detection of forgings, anti-overturning moment, impurity-proof performance of seals.

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Product Description

Data Sheet

Large Diameter Slewing Bearings for Extreme Industrial Demands

When your machinery demands reliability under punishing conditions, Large Diameter Slewing Bearings deliver unmatched performance. Designed for outer ring diameters from 2000mm to 5000mm, these robust components excel in heavy-load scenarios like port cranes, wind turbines (5MW+), and metallurgical equipment. With 42CrMo steel construction and precision grinding, they withstand overturning moments up to 45,000 kN while operating seamlessly from -30℃ to 150℃.

Why Our Slewing Bearings Outperform?

✅ Integrated R&D & Manufacturing

From prototype to mass production, we control every step—ensuring φ500-5000mm bearings meet exact load, speed, and environmental needs.

✅ Heat & Wear Resistance

Specialized heat treatment (carburizing/induction hardening) enables continuous operation in steel mills’150℃+ environments.

✅ Agile Custom Production

Get φ3000mm+ non-standard bearings in 25 days—30% faster than industry averages—via modular workflows.

✅ Global Supply Chain

1,000+ Large Diameter Slewing Bearings standard models ship in 48 hours; IoT-driven logistics support urgent orders worldwide.

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Technical Excellence for Critical Applications

Parameter	Specification
Outer Diameter	2000mm - 6000mm (expandable modularly)
Static Load Capacity	Up to 45,000 kN
Dynamic Load	Up to 18,000 kN
Material Options	42CrMo4 / 50Mn / SAE 52100
Precision	ISO 9001 P6/P5 (≤15μm radial runout)
Noise Level	<50dB (medical/urban equipment)

Industry-Specific Solutions

Wind Energy: Offshore-grade bearings with 500μm Ni-Cr-Mo coating for 50-year salt spray resistance (DNV-ST-0419 certified).
Port Cranes: Triple-row roller designs + fluororubber seals handle 30MN loads in humid, debris-heavy environments.
Mining: Impact-resistant GCr15SiMn rollers survive 5x overspeed cycles (ISO 24081 compliant).

Built to Last: Material & Quality

Forged Steel Rings: Vacuum-degassed 42CrMo/50Mn forgings prevent micro-cracks.
3-Stage Grinding: Achieve ≤0.005mm surface roughness for smooth rotation.
12+ Performance Tests: 100% inspected via FEA lifespan simulation, vibration analysis, and seal IP69K testing.

Seamless Procurement & Support

Fast Delivery: 48-hour shipping for 1,000+ standard models.
Custom Workflow:

1. Submit requirements → 2. Design review (24hr response) → 3. Prototype testing → 4. Bulk production (15-20 days).

5-Year Warranty: Coverage for material/processing defects.

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FAQs

Q: Can you integrate gear teeth into φ3000mm+ bearings?

A: Yes—we pre-machine ISO 1328-1 Class 6 gears to reduce crane assembly time by 20%.

Q: How do you prevent seal failures in dusty environments?

A: Our DustShield™ triple-lip seals with automated grease ports achieve IP69K dust/water resistance.

Q: What certifications do your offshore wind bearings have?

A: GL Wind 2010, DNV-ST-0419, and CE/UKCA marking.

Contact Us

Email engineers: sales@inno-bearing.com

Need Large Diameter Slewing Bearings Optimized for Your Machinery?

Double-row Ball Slewing bearing-with Internal Teeth
d1195~2872mm
Boundary Dimension			Bearing Type	Related Dimension												Gear Parameter					Weight
d	D	T		D1	d1	d2	DwP	H	h	n1	n2	n3	φ1	φ2	φ3	da	b	m	Z	X	kg≈
1195	1550	160	8787/1195	1450	1250	1348	1350	150	10	8	48	48	ZG1/4	33	33	1142	100	10	115	0.5	796
1310	1600	135	7787/1310G	1550	1365	1414	1465	140	5	4	32	32	M10X1	26	26	1214.4	100	16	77	0.25	491
1344	1635	142	8787/1344	1575	1400	1481	1488	132	10	8	44	44	M10X1	30	30	1284	80	12	108	0.5	640
1716	2080	168	8787/1716K	2000	1800	1899	1900	158	10	9	54	54	M14X1.5	32	33	1657.3	100	12	139	0.5	1230
1716	2080	168	8787/1716K1	2000	1800	1899	1900	158	10	8	54	54	M10X1	33	33	1657.3	100	12	139	0.5	1230
1727	2053	150	8787/1727	1984	1800	1885	1892	138	12	6	54	60	12	33	33	1652	120	14	119	0	1000
2000	2400	169	8787/2000	2320	2110	2208	2215	159	10	10	64	80	M10X1	33	33	1944	120	12	163	0.5	1563
-	3040	181	024.40.2875.03	2975	2775	2835	2875	155	36	6	60	60	ZG3/8	M33	36	2600.4	145	22	118	1	1843
-	3075	198	024.45.2895.03	3005	2775	2850	2895	168	43	6	60	60	M10X1	M36	39	2600.4	155	22	118	1	2298
-	3100	181	023.40.2940.03	3040	2805	2904	2940	161	40	6	60	60	M10X1	26	26	2626.5	141	16	165	0.5	2194
2728	3100	210	7787/2728K	3040	2780	2874	2930	200	42	4	36	36	M14X1.5	26	25	2652	105	10	266	0.6	2537
2872	3428	226	023.60.3150.03	3338	2962	3108	3160	214	56	8	56	56	M10X1	45	45	2760	150	20	139	0.5	4019
-	3455	217	024.50.3250.03	3365	3140	3206	3250	192	47	6	68	68	ZG3/8	M36	39	2952	170	24	123	1	2899
-	3455	222	024.50.3250.03K	3365	3140	3206	3250	202	47	6	68	68	ZG3/8	M36	39	2952	175	24	123	1	3028
-	3503	240	024.60.3310.03	3435	3190	3255	3310	214	26	8	88	88	ZG3/8	M33	37	3000	190	24	126	0.5	3223

Double-row Ball Slewing bearing-with External Teeth
d820～4470mm
Boundary Dimension			Bearing Type	Related Dimension												Gear Parameter					Weight
d	D	T		D1	d1	d2	DwP	H	h	n1	n2	n3	φ1	φ2	φ3	da	b	m	Z	X	kg≈
820	1150	125	6787/820G	1100	880	1020	990	130	5	2X2	1	14/4	M10X1	1	25/22	1206	75	12	99	-0.25	508
978	1262	124	021.30.1120.12	1218	1022	1159	1120	114	29	6	36	36	M10X1	22	22	1318	80	10	129	0.5	391
1074	1426	160	021.40.1250.12	1374	1126	1300	1250	150	39	8	40	40	M10X1	26	26	1497.6	90	12	122	0.5	726
1224	1576	160	021.40.1400.12	1524	1272	1450	1400	150	39	8	40	40	M10X1	26	26	1644	90	12	134	0.5	803
1224	1576	160	022.40.1400.12	1524	1272	1450	1400	150	39	5	40	40	M10X1	26	26	1649.2	90	14	115	0.5	809
1424	1776	160	022.40.1600.12	1724	1476	1650	1600	150	39	5	45	45	M10X1	26	26	1852.8	90	16	113	0.5	967
1600	2000	175	6787/1600G	1920	1675	1840	1790	190	15	4	20	10	M10X1	38	38	2066.4	120	14	146	-0.2	1531
1600	2000	175	6788/1600G	1920	1675	1840	1790	190	15	4	24	24	M10X1	32	32	2154.6	140	6	358	-0.45	1576
1624	1976	160	022.40.1800.12	1924	1676	1836	1800	150	39	5	45	45	M10X1	26	26	2060.8	90	16	126	0.5	1088
2135	2524	185	9787/2135	2436	2215	2331	2333	170	15	12	68	64	M10X1	39	M30	2616	147	20	128	0.5	1900
2135	2524	185	9787/2135K	2436	2215	2331	2333	170	15	6	68	64	M10X1	39	M30	2616	147	20	128	0.5	1900
2209	2470	90	021.25.2285.03	2340	2245	2306	2286	64	26	4	24	20	M10X1	M16	M16	2420	70	10	240	0	372
2285	2715	190	021.50.2500.12	2649	2351	2538	2500	178	47	8	56	56	M10X1	33	33	2804	120	18	153	0.5	2031
2570	3040	195	9787/2570	2885	2665	2776	2778	165	15	8	94	96	M10X1	39	M36	3141.6	170	22	140	0.5	2730
3405	3765	185	6789/3405K	3700	3465	3638	3570	185	45	12	48	48	M12X1.25	35	35	3852	120	18	212	0	2632
4470	5184	250	022.60.4700.03	4910	4565	4759	4700	238	65	10	60	60	M10X1	33	33	5184	155	18	286	0	7630

Double-row Ball Slewing bearing-without Teeth
d260~3245mm
Boundary Dimension			Bearing Type	Related Dimension												Weight
d	D	T		D1	d1	d2	DwP	H	h	n1	n2	n3	φ1	φ2	φ3	kg≈	Loading Curve
260	385	55	D787/260	365	280	313	314.673	55	0	3	33	33	3	9.3	9.3	18.5
978	1262	124	020.30.1120.12	1218	1022	1159	1120	124	29	6	36	36	M10X1	22	22	343
1074	1426	160	020.40.1250.12	1374	1126	1300	1250	121	39	8	40	40	RC1/4	26	26	652
1916	2320	150	787/1916G2	2245	1980	2146	2115	130	15	12	42	42	M12	34	34	1251
2530	2820	156	020.40.2685.03	2775	2580	2651	2685	150	39	6	60	60	M10X1	26	26	1173
3245	3683	230	020.60.3485.03	3620	3315	3420	3487	220	10	12	52	52	M10X1	39	39	3240