Custom Spherical Roller Bearings Manufacturers, Suppliers

Spherical Roller Bearings Custom

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Spherical Roller Bearings Suppliers

Design Variants
Tolerance
Internal clearance

Normally spherical roller bearings are non- separable double-row radial bearings, produced in open design as standard. On request, DHK can also design and produce single row spherical roller bearings or split outer ring spherical roller bearings.

Depending on their size and series DHK spherical roller bearings are produced in several different design variations, different designs have different spherical roller design and are fitted with different cages.

Bearings of the design C have symmetric spherical rollers and centre loose rib are fitted with two pieces pressed steel cage as standard.

Bearings of the design MB have a centre flange, with asymmetrical rollers and two pieces inner ring riding and machined solid brass cages. This design is produced for the large spherical roller bearings as standard. Such bearings have higher speed capacity.

Bearings of the design CA don t have centre flange. They have symmetric spherical rollers and are fitted with one piece machined solid brass cage.

Bearings of the design MA have a loose centre guide ring. They have symmetric rollers, are fitted with one piece machined and outer ring riding solid brass cage. The bearings of this design are especially for use in vibrating applications.

The spherical roller bearings are also frequently used with tapered bores (i.e. taper 1:12) namely suffix K or the taper bore is 1:30 namely suffix K30 for series 240 and 241 as standard. Such bearings are very easy to mount. The facility of mounting these bearing types using adapter (H) and withdrawal sleeves (AH) enables mounting directly onto drawn or fine turned seats of shaft for applications where high running accuracy is not necessary.

Lubricating groove and holes DHK spherical roller bearings with the exception of series 213...are produced incorporating simple re-lubrication features as standard, e.g. a circumferential groove and lubricating holes in

the outer ring. These features are identified with the suffix W33.

Misalignment

Spherical roller bearings are optimum to compensate misalignments. The maximum permissible misalignment from their centre position ( ), is dependant upon bearing design, series and actual operating conditions. The following values are maximum permissible.

Bearingseries Maximum permissible misalignment

213 1

222 1.5

223 2

230 1.5

231 1.5

232 2.5

239 1.5

240 2

241 2.5

DHK spherical roller bearings are produced with normal tolerance class (PN) as standard. Values for the individual tolerance classes are listed in the tables of the chapter bearing data / tolerance page 8.

Tolerances for DHK spherical roller bearings (excluding tapered roller bearings)

All dimensions shown in (mm):

Tolerances in (um):

Inner Ring

PN/(Normal)

Nominal Bore diameter		Deviation dmp	Variation Vdp Series			Variation Vdmp	Taper bore 1:12 Deviation/ Variation
>	<=	△dmp	7．8．9	0．1	2．3．4	Vdmp	△dmp	△d1mp-dmp	Vdp
2.5 10		0 -8	10	8	6	6	+15 0	+15 0	10
10 18		0 -8	10	8	6	6	+18 0	+18 0	10
18 30		0 -10	13	10	8	8	+21 0	+21 0	13
30 50		0 -12	15	12	9	9	+25 0	+25 0	15
50 80		0 -15	19	19	11	11	+30 0	+30 0	19
80 120		0 -20	25	25	15	15	+35 0	+35 0	25
120 180		0 -25	31	31	19	19	+40 0	+40 0	31
180 250		0 -30	38	38	23	23	+46 0	+46 0	38
250 315		0 -35	44	44	26	26	+52 0	+52 0	44
315 400		0 -40	50	50	30	30	+57 0	+57 0	50
400 500		0 -45	56	56	34	34	+63 0	+63 0	56
500 630		0 -50	63	63	38	38	+70 0	+70 0
630 800		0 -75					+80 0	+80 0
800 1000		0 -100					+90 0	+90 0
1000 1250		0 -125					+105 0	+105 0
1250 1600		0 -160
1600 2000		0 -200

Outer ring
PN/(Normal)

Nominal Outer diameter		Deviation	Variation Vdp Series			Sealed bearing	Variation	Radial runout
>	<=	△Dmp	7．8．9	0．1	2．3．4	2 3 4	VDmp	Kea
6 18		0 -8	10	8	6	10	6	15
18 30		0 -9	12	9	7	12	7	15
30 50		0 -11	14	11	8	16	8	20
50 80		0 -13	16	13	10	20	10	25
80 120		0 -15	19	19	11	26	11	35
120 150		0 -18	23	23	14	30	14	40
150 180		0 -25	31	31	19	38	19	45
180 250		0 -30	38	38	23		23	50
250 315		0 -35	44	44	26		26	60
315 400		0 -40	50	50	30		30	70
400 500		0 -45	56	56	34		34	80
500 630		0 -50	63	63	38		38	100
630 800		0 -75	94	94	55		55	120
800 1000		0 -100	125	125	75		75	140
1000 1250		0 -125						160
1250 1600		0 -160						190
1600 2000		0 -200						220
2000 2500		0 -250						250

For the internal clearance group of spherical roller bearings a distinction must be made between bearings with cylindrical or tapered bores.DHK spherical roller bearings are produced to each relevant normal clearance group CN as standard.DHK can also produce spherical roller bearings with larger radial clearance (groups C3, C4 or C5) or even reduced radial clearance (group C2) on order request. The values are confirmed to ISO5753. Detailed values of radial clearance groups are listed in the following tables.

Radial internal clearance of DHK spherical roller bearings Spherical roller bearings with cylindrical bore

Bore diameter
>	<=	C2 Min max	CN Min max	C3 Min max	C4 Min max	C5 Min max
-- 24		10 20	20 35	35 45	45 60	60 75
24 30		15 25	25 40	40 55	55 75	75 95
30 40		15 30	30 45	45 60	60 80	80 100
40 50		20 35	35 55	55 75	75 100	100 125
50 65		20 40	40 65	65 90	90 120	120 150
65 80		30 50	50 80	80 110	110 145	145 180
80 100		35 60	60 100	100 135	135 180	180 225
100 120		40 75	75 120	120 160	160 210	210 260
120 140		50 95	95 145	145 190	190 240	240 300
140 160		60 110	110 170	170 220	220 280	280 350
160 180		65 120	120 180	180 240	240 310	310 390
180 200		70 130	130 200	200 260	260 340	340 430
200 225		80 140	140 220	220 290	290 380	380 470
225 250		90 150	150 240	240 320	320 420	420 520
250 280		100 170	170 260	260 350	350 460	460 570
280 315		110 190	190 280	280 370	370 500	500 630
315 355		120 200	200 310	310 410	410 550	500 690
355 400		130 220	220 340	340 450	450 600	600 750
400 450		140 240	240 370	370 500	500 660	660 820
450 500		140 260	260 410	410 550	550 720	720 900
500 560		150 280	280 440	440 600	600 780	780 1000
560 630		170 310	310 480	480 650	650 850	850 1100
630 710		190 350	350 530	530 700	700 920	920 1190
710 800		210 390	390 580	580 770	770 1010	1010 1300
800 900		230 430	430 650	650 860	860 1120	1120 1440
900 1000		260 480	480 710	710 930	930 1220	1220 1570
1000 1120		290 530	530 780	780 1020	1020 1330	1330 1770
1120 1250		320 580	580 860	860 1120	1120 1460	1460 1870
1250 1400		350 640	640 950	950 1240	1240 1620	1620 2060
1400 1600		400 720	720 1060	1060 1380	1380 1800	1800 2300
1600 1800		450 810	810 1180	1180 1550	1550 2000	2000 2550

Spherical roller bearings with tapered bore

Bore diameter
>	<=	C2 Min max	CN Min max	C3 Min max	C4 Min max	C5 Min max
-- 24		15 25	25 35	35 45	45 60	60 75
24 30		20 30	30 40	40 55	55 75	75 95
30 40		25 35	35 50	50 65	65 85	85 105
40 50		30 45	45 60	60 80	80 100	100 130
50 65		40 55	55 75	75 95	95 120	120 160
65 80		50 70	70 95	95 120	120 150	150 200
80 100		55 80	80 110	110 140	140 180	180 230
100 120		65 100	100 135	135 170	170 220	220 280
120 140		80 120	120 160	160 200	200 260	260 330
140 160		90 130	130 180	180 230	230 300	300 380
160 180		100 140	140 200	200 260	260 340	340 430
180 200		110 160	160 220	220 290	290 370	370 470
200 225		120 180	180 250	250 320	320 410	410 520
225 250		140 200	200 270	270 350	350 450	450 570
250 280		150 220	220 300	300 390	390 490	490 620
280 315		170 240	240 330	330 430	430 540	540 680
315 355		170 270	270 360	360 470	470 590	590 740
355 400		210 300	300 400	400 520	520 650	650 820
400 450		230 330	330 440	440 570	570 720	720 910
450 500		260 370	370 490	490 630	630 790	790 1000
500 560		290 410	410 540	540 680	680 870	870 1100
560 630		320 460	460 600	600 760	760 980	980 1230
630 710		350 510	510 670	670 850	850 1090	1090 1360
710 800		390 570	570 750	750 960	960 1220	1220 1500
800 900		440 640	640 840	840 1070	1070 1370	1370 1690
900 1000		490 710	710 930	930 1190	1190 1520	1520 1860
1000 1120		530 770	770 1030	1030 1300	1300 1670	1670 2050
1120 1250		270 830	830 1120	1120 1420	1420 1830	1830 2250
1250 1400		620 910	910 1230	1230 1560	1560 2000	2000 2450
1400 1600		680 1000	1000 1350	1350 1720	1720 2200	2200 2700
1600 1800		750 1110	1110 1500	1500 1920	1920 2400	2400 2950

Model	Dimensions				Rated load		Extreme speed		Calculation factor				Weight
Model	d	D	B	r1,r2 min	Dynamic load	Static load	Grease lubrication	Oil lubrication	e	Y1	Y2	Yo	[kg]
21304c	20	52	15	1.1	36.5	33.5	8500	10000	0.3	2.3	3.3	2	0.16
21305c	25	62	17	1.1	44	43	7000	9000	0.28	2.4	3.6	2.4	0.25
21306c	30	72	19	1.1	62	63	6000	7500	0.27	2.5	3.7	2.4	0.39
21307c	35	80	21	1.5	71	73.5	5300	6700	0.26	2.6	3.8	2.5	0.5
21307ck	35	80	21	1.5	71	73.5	5300	6700	0.26	2.6	3.8	2.5	0.5
21308c	40	90	23	1.5	99	120	4500	6000	0.26	2.6	3.9	2.6	0.7
21308ck	40	90	23	1.5	99	120	4500	6000	0.26	2.6	3.9	2.6	0.7
21309c	45	100	25	1.5	120	135	4000	5300	0.26	2.6	3.9	2.6	0.95
21309ck	45	100	25	1.5	120	135	4000	5300	0.26	2.6	3.9	2.6	0.95
21310c	50	110	27	2	120	130	3600	4800	0.24	2.8	4.1	2.7	1.25
21310ck	50	110	27	2	120	130	3600	4800	0.24	2.8	4.1	2.7	1.25
21311c	55	120	29	2	135	155	3200	4300	0.24	2.8	4.1	2.7	1.65
21311ck	55	120	29	2	135	155	3200	4300	0.24	2.8	4.1	2.7	1.65
21312c	60	130	31	2.1	150	180	3000	4000	0.24	2.9	4.3	2.8	1.95
21312ck	60	130	31	2.1	150	180	3000	4000	0.24	2.9	4.3	2.8	1.95
22213c	60	120	31	1.5	180	220	3000	4000	0.28	2.4	3.7	2.4	1.44
22213ck	60	120	31	1.5	180	220	3000	4000	0.28	2.4	3.7	2.4	1.44
21313c	65	140	33	2.1	196	228	2800	3800	0.24	2.8	4.2	2.8	2.45
21313ck	65	140	33	2.1	196	228	2800	3800	0.24	2.8	4.2	2.8	2.45
21314c	70	150	35	2.1	250	310	2600	3400	0.23	2.9	4.4	2.9	3.1
21314ck	70	150	35	2.1	250	310	2600	3400	0.23	2.9	4.4	2.9	3.1
21315c	75	160	37	2.1	280	360	2400	3200	0.23	2.9	4.4	2.9	3.55
21315ck	75	160	37	2.1	280	360	2400	3200	0.23	2.9	4.4	2.9	3.55
21316c	80	170	39	2.1	275	340	2200	3000	0.23	2。9	4.4	2.9	4.25
21316ck	80	170	39	2.1	275	340	2200	3000	0.23	2.9	4.4	2.9	4.25
21317c	85	180	41	3	350	450	2200	2800	0.22	3	4.5	2.9	5.1
21317ck	85	180	41	3	350	450	2200	2800	0.22	3	4.5	2.9	5.1
21318c	90	190	43	3	335	415	2200	2800	0.22	3	4.5	2.9	5.8
21318ck	90	190	43	3	335	415	2200	2800	0.22	3	4.5	2.9	5.8
21319c	95	200	45	3	360	450	2000	2600	0.22	3	4.5	3	7.43
21319ck	95	200	45	3	360	450	2000	2600	0.22	3	4.5	3	7.43

Ningbo DHK Precision Bearing Co., Ltd.

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Industry Knowledge Expansion About This Category

1: Understanding the Importance of Spherical Roller Bearings in Industrial Applications

Spherical roller bearings play a crucial role in various industrial applications, enabling machinery and equipment to handle heavy loads, rotational movements, and misalignment challenges. These specialized bearings are designed to accommodate both radial and axial loads, making them ideal for industries such as mining, construction, manufacturing, and more. With the increasing demand for reliable and high-performance machinery, selecting the right spherical roller bearings supplier becomes paramount.

2: Key Factors to Consider When Choosing Spherical Roller Bearings Suppliers

Selecting a reputable and reliable spherical roller bearings supplier is a critical decision that can significantly impact the efficiency, reliability, and lifespan of industrial equipment. Below are some key factors to consider when evaluating potential suppliers:

a) Product Quality and Performance: The first and foremost consideration is the quality of the spherical roller bearings offered by the supplier. Look for suppliers that adhere to international quality standards and have a track record of producing durable and high-performance bearings. This involves understanding the supplier's manufacturing processes, material sourcing, and quality control procedures. Reputable suppliers often provide detailed technical specifications and testing data to demonstrate the capabilities of their products.

b) Industry Experience and Expertise: A supplier's industry experience and technical expertise are indicators of their ability to understand and meet the unique requirements of different industrial applications. Established suppliers with a history of serving diverse industries are more likely to offer tailored solutions and provide valuable insights into bearing selection, installation, and maintenance.

c) Product Range and Customization: Industrial applications vary widely, and having access to a diverse range of spherical roller bearings is advantageous. A reliable supplier should offer various sizes, designs, and configurations to address different load and operational conditions. Additionally, the ability to customize bearings based on specific requirements can significantly enhance equipment performance and longevity.

d) Technical Support and Customer Service: Efficient technical support and responsive customer service are essential when dealing with complex bearing applications. A reputable supplier should provide expert guidance during the selection process, assist with installation procedures, and offer ongoing support for maintenance and troubleshooting.

3: Evaluating Spherical Roller Bearings Suppliers for Long-Term Partnership

Choosing a spherical roller bearings supplier is not just a one-time transaction; it's a decision that can impact an organization's operational efficiency for years to come. To establish a successful and long-lasting partnership with a supplier, it's important to consider the following aspects:

a) Reliability and Consistency: Consistency in product quality, availability, and delivery timelines is vital for minimizing downtime and ensuring uninterrupted operations. Suppliers with a strong reputation for reliability are more likely to uphold their commitments and provide a steady supply of bearings as needed.

b) Innovation and Technological Advancements: Industries are constantly evolving, and bearing technology is no exception. Suppliers that invest in research and development to improve bearing performance, durability, and efficiency can provide access to cutting-edge solutions that enhance equipment productivity.

c) Global Presence and Distribution Network: For businesses with operations across different regions, partnering with a supplier with a global presence and an extensive distribution network can streamline the procurement process and ensure consistent supply chain management.

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+86-574-86597612
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ken@dhk-intl.com
Phone
+86-13957821917
Fax
+86-574-86597652

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Building 31, Chuang E Huigu, No.777, West Zhongguan RoadZhenhai Economic Development Zone, Ningbo, Zhejiang, China

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Latest News

Are there any specific alignment requirements for screw compressor bearings to optimize performance and reduce wear?

What are the best practices for installing and mounting bearings in engineering machinery to ensure proper functionality?

What are the potential risks associated with over-lubrication or under-lubrication of motor bearings?

How do factors such as load capacity and rotational speed requirements influence the selection of bearings for different agricultural applications?

What role does lubrication play in ensuring the optimal performance of automobile bearings?

How to determine the appropriate interval for screw compressor bearing replacement?

Industry Knowledge Expansion About This Category

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Bearingseries	Maximum permissible misalignment
213	1
222	1.5
223	2
230	1.5
231	1.5
232	2.5
239	1.5
240	2
241	2.5

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Ningbo DHK Precision Bearing Co., Ltd.

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Latest News

Are there any specific alignment requirements for screw compressor bearings to optimize performance and reduce wear?

What are the best practices for installing and mounting bearings in engineering machinery to ensure proper functionality?

What are the potential risks associated with over-lubrication or under-lubrication of motor bearings?

How do factors such as load capacity and rotational speed requirements influence the selection of bearings for different agricultural applications?

What role does lubrication play in ensuring the optimal performance of automobile bearings?

How to determine the appropriate interval for screw compressor bearing replacement?

Industry Knowledge Expansion About This Category

CONTACT US

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Email

Phone

Fax

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