Double Row Ball Slewing Bearing----External Gear

• Standard or Nonstandard: Standard
• Feature: Heat-Resistant
• Sealing Gland: Sealed On Both Sides
• Rolling-Element Number: Single and Double Row
• Roller Type: Four Point Contract
• Material: 42CrMo/50mn/ S48c, Bearing Steel
• Model NO.: GS-210819-12
• Type: Nongeared, External or Internal
• Application: Excavator, Crane, Material Handling
• Warranty: 12 Months/ 2000 Hours
• Service: OEM Customized Services
• Seals Type: Nbri-3
• Hardness: 207-262hb (Slewing Bearing)
• Product Name: Slewing Bearing Customized for Excavator
• Transport Package: Wooden Case/:Inclined Iron Frame/Reinforced Wooden
• Specification: 100-4000mm
• Trademark: Neutral/OEM/According to customized
• Origin: Jiangsu, China
• HS Code: 8482800000
• Production Capacity: 150000sets/Year

Product Description

Production descrption:

Double Row Ball Slewing Bearing----External Gear

Double Row Ball Slewing Bearing----External Gear

Characteristic of structure, performance and application

Double row ball slewing bearing has three seat ring, the steel ball and the spacing block can be directly arrange into the upper and lower races, two rows of upper and lower steel balls with different diameter are fitted according to the stress condition.

This kind of open assembly is very convenient, for the upper and lower bear raceway arc angles is 90°,which can bear large axial forces and tilting moment. When the radial force is greater than 0.1 times the axial force need to be specially designed the raceway.

Double row different ball slewing bearing's axial and radial size are relatively large and solid in structure, so it is specially suitable for the medium diameter tower cranes, truck mounted cranes etc. loading and unloading machinery.

No.	External Gear DL mm	Dimensions			Mounting Dimension				Structural Dimension			Gear Data					Gear circumferential force		Weight kg
		D mm	d mm	H mm	D1 mm	D2 mm	n	mm	n1 mm	H1 mm	h mm	b mm	x	m mm	De mm	z	Normalizing Z 10^4N	Quenching T 10^4N
1	021.25.500	616	384	106	580	420	20	18	4	96	26	60	0.5	5	644	126	3.7	5.2	100
	022.25.500													6	646.8	105	4.5	6.2
2	021.25.560	676	444	106	640	480	20	18	4	96	26	60	0.5	5	704	138	3.7	5.2	115
	022.25.560													6	706.8	115	4.5	6.2
3	021.25.630	746	514	106	710	550	24	18	4	96	26	60	0.5	6	790.8	129	4.5	6.2	130
	022.25.630													8	790.4	96	6	8.3
4	021.25.710	826	594	106	790	630	24	18	4	96	26	60	0.5	6	862.8	141	4.5	6.2	140
	022.25.710													8	862.4	105	6	8.3
5	021.30.800	942	658	124	898	702	30	22	6	114	29	80	0.5	8	982.4	120	8	11.1	200
	022.30.800													10	988	96	10	14
6	021.30.900	1042	758	124	998	802	30	22	6	114	29	80	0.5	8	1086.4	133	8	11.1	250
	022.30.900													10	1088	106	10	14
7	021.30.1000	1142	858	124	1098	902	36	22	6	114	29	80	0.5	10	1198	117	10	14	300
	022.30.1000													12	1197.6	97	12	16.7
8	021.30.1120	1262	978	124	1218	1022	36	22	6	114	29	80	0.5	10	1318	129	10	14	340
	022.30.1120													12	1317.6	107	12	16.7
9	021.40.1250	1426	1074	160	1374	1126	40	26	5	150	39	90	0.5	12	1497.6	122	13.5	18.8	580
	022.40.1250													14	1495.2	104	15.8	21.9
10	021.40.1400	1576	1224	160	1524	1272	40	26	5	150	39	90	0.5	12	1641.6	134	13.5	18.8	650
	022.40.1400													14	1649.2	115	15.8	21.9
11	021.40.1600	1776	1424	160	1724	1476	45	26	5	150	39	90	0.5	14	1845.2	129	15.8	21.9	750
	022.40.1600													16	1852.8	113	18.1	25
12	021.40.1800	1976	1624	160	1924	1676	45	26	5	150	39	90	0.5	14	2055.2	144	15.8	21.9	820
	022.40.1800													16	2060.8	126	18.1	25
13	021.50.2000	2215	1785	190	2149	1851	48	33	8	178	47	120	0.5	16	2300.8	141	24.1	33.3	1150
	022.50.2000													18	2300.4	125	27.1	37.5
14	021.50.2240	2455	2025	190	2389	2091	48	33	8	178	47	120	0.5	16	2540.8	156	24.1	33.3	1500
	022.50.2240													18	2552.4	139	27.1	37.5
15	021.50.2500	2715	2285	190	2649	2351	56	33	8	178	47	120	0.5	18	2804.4	153	27.1	37.5	1700
	022.50.2500													20	2816	138	30.1	41.8
16	021.50.2800	3015	2585	190	2949	2651	56	33	8	178	47	120	0.5	18	3110.4	170	27.1	37.5	1900
	022.50.2800													20	3116	153	30.1	41.8
17	021.60.3150	3428	2872	226	3338	2962	56	45	8	214	56	150	0.5	20	3536	174	37.7	52.2	3300
	022.60.3150													22	3537.6	158	41.5	57.4
18	021.60.3550	3828	3272	226	3738	3362	56	45	8	214	56	150	0.5	20	3936	194	37.7	52.2	3700
	022.60.3550													22	3933.6	176	41.5	57.4
19	021.60.4000	4278	3722	226	4188	3812	60	45	10	214	56	150	0.5	22	4395.6	197	41.5	57.4	4200
	022.60.4000													25	4395	173	47.1	65.2
20	021.60.4500	4778	4222	226	4688	4312	60	45	10	214	56	150	0.5	22	4879.6	219	41.5	57.4	4700
	022.60.4500													25	4895	193	47.1	65.2

Note:

1. n1 is the number of lubricating holes. Oil cup M10×1JB/T7940.1~JB/T7940.2. The Oil nipple's location can be changed according to the user's application.

2. n-φ can changed to tapped hole, the diameter of tapped hole is M,depth is 2M.

3. The tangential tooth force in the form is the maximum tooth force, the nominal tangential tooth force is 1/2 of the max one.

4. "K" is addendum reduction coefficient.

FAQ
1. What is the production process?
A: Production process including raw material cutting, rough turning, machining processing(layout for drilling, tooth processing), finish turning, grinding, accessories cleaning, assembling, stoving, oil coating, testing, package.

2. How to control the quality of the products?
A: High precision equipment, advanced in-house engineer team, strictly inspection as well as TPI like SGS, DNV, BV, ABS, etc.

3: How long is your delivery time?
A: Generally speaking, it is 3-5 days if the goods are in stock. 15-25 days if the goods are not in stock.

4: Do you provide samples ? is it free or not?
A: Yes, we could offer a sample free of charge but we need a basement cost.

5: What are your terms of payment?
A: 30% prepaid and balance before shipment.
For big order, we accept L/C at sight.

6. What is your MOQ?
A: For standard type and OEM, MOQ is 1 pc.

7. What is the transportation?
A: DHL, UPS, TNT, FedEx. by sea or by air

8. Can you design special packaging?
A: Yes. Except for regular packing, we can make special packing and label for the customer.

9. What's your payment method.
A: We can accept PayPal/ West Union/ Bank transfer Etc.

10. Can you provide an OEM service?
A: Yes, we provide OEM service, packing and other requirements