sale@chg-bearing.com
banner
banner
banner

Double Row Cylindrical Roller Bearing

1. Type: NNU and NN series cylindrical roller bearing. The NN design has an inner ring with two ribs and an outer ring without ribs.
The NNU design has an inner ring without ribs and an outer ring with two ribs.
2. Advantages: The advantages of the double-row cylindrical roller bearings are high stiffness and high precision.
3. Application: They are usually used as main shaft bearings of precision machine tools.
4. Size range:
Inter diameter:200-1500mm
5. Material: GCr15/GCr15SiMn/G20Cr2Ni4A
6. Feature:
The double-row cylindrical roller bearing is one separable type bearing and easy to assemble and disassemble.
The double-row cylindrical roller bearing has two optional structures: cylindrical bore and tapered bore(suffix K).The tapered bore structure can allow the radial clearance to be adjusted when the bearing is installed. The double-row cylindrical roller bearing allows a certain axial displacement between the shaft and bearing housing and can be used as a non-locating bearing.

What is a Double Row Cylindrical Roller Bearing?

A Double Row Cylindrical Roller Bearing is a type of roller bearing designed to support high radial loads while operating efficiently under various conditions. It highlights two lines of round and hollow rollers orchestrated parallel to the bearing's hub, which permits it to handle bigger loads compared to single-row plans. This bearing sort is perfect for applications requiring tall stack capacity and inflexibility, making it a well known choice in heavy-duty apparatus, particularly inside the metallurgical and mining businesses.

product-1-1

CHG Bearing: Your Expert in Double Row Cylindrical Roller Bearings

At CHG Bearing, we pride ourselves on being a leading manufacturer and supplier of the products. Here’s why you should choose us:

  1. Customization and Solutions: We offer tailored solutions to meet the specific needs of different working conditions, ensuring optimal performance and durability for your equipment.
  2. Industry Expertise: With over 30 years of experience in the bearing industry, we have established strong partnerships with numerous large companies, providing them with high-quality bearing solutions.
  3. Innovation and Quality: Our company holds more than 50 invention patents and is certified under ISO9001 and ISO14001, reflecting our commitment to quality and environmental responsibility.

For more information or to discuss your needs, please contact us at sale@chg-bearing.com.

product-1-1

Technical Specifications

SpecificationDetails
Bearing TypeDouble Row Cylindrical Roller Bearing
Load CapacityHigh Radial Load Capacity
MaterialHigh-Quality Bearing Steel / Stainless Steel
Precision ClassP0, P6, P5, P4
Operating Temperature-40°C to +120°C
LubricationGrease, Oil, or Customization
ClearanceC0, C3, C4

Benefits of Double Row Cylindrical Roller Bearings

  • High Load Capacity: Designed to support heavy radial loads, making them suitable for large machinery and equipment.
  • Enhanced Rigidity: The double-row design provides superior rigidity and stability under high load conditions.
  • Durability: Built to withstand harsh environments and extreme operational conditions, resulting in longer service life.
  • Low Maintenance: Reduces the frequency of maintenance and replacements due to its robust construction.

Applications

Double Row Cylindrical Roller Bearing is widely used in various industries, including:

  • Metallurgical Industry: Blast furnaces, rolling mills, and steelmaking equipment.
  • Mining Machinery: Jaw crushers, impact crushers, vibrating screens, and feeders.
  • Heavy-Duty Equipment: Large rotating machinery and industrial equipment.

product-1-1

Installation Guide

  1. Preparation: Ensure the bearing and mounting surfaces are clean and free from debris.
  2. Alignment: Properly align the bearing with the housing and shaft to prevent misalignment.
  3. Press Fit: Gently press the bearing into the housing using a bearing press or appropriate tools.
  4. Lubrication: Apply the recommended lubricant to ensure smooth operation.
  5. Testing: Rotate the bearing manually to check for smoothness and ensure no binding or friction.

Maintenance and Care

  • Regular Inspection: Check for signs of wear, noise, or vibration periodically.
  • Lubrication: Keep the bearing properly lubricated according to the manufacturer’s recommendations.
  • Cleaning: Clean the bearing and surrounding areas to prevent contamination.
  • Monitoring: Monitor operating conditions to ensure they remain within the bearing’s specifications.

Our certification

product-1-1

FAQ

Q: What are the main advantages of Double Row Cylindrical Roller Bearings? A: They offer high load capacity, enhanced rigidity, durability, and low maintenance requirements.

Q: How do I choose the right the product for my application? A: Consider factors such as load capacity, operating conditions, and required precision. Consult with a bearing expert if needed.

Q: What is the typical lifespan of a Double Row Cylindrical Roller Bearing? A: Lifespan varies based on operating conditions and maintenance. Proper care can significantly extend bearing life.

Customer Reviews

John D., Production Manager:
“We’ve been using CHG’s Double Row Cylindrical Roller Bearing for years. Their performance is exceptional, and the customization options are a real game-changer for our equipment.”

Sarah M., Technical Engineer:
“The bearings from CHG have proven to be reliable even in the harshest conditions. Their quick response and support make them our go-to supplier.”

product-1-1

Contact Us

For any inquiries or to get a quote, please reach out to us at sale@chg-bearing.com. Our team is here to help you find the perfect solution for your bearing needs.

product-1-1

BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
200280602.1420815NN 39403282940-259216221263--210.6
 280802.1484960NN 4940K/W204182940Y-259211222264269-214.1
 280802.15701220NN 49404282940-259211222264269-215.3
 280802.15701220NNU 49404482940225-211222-269228215.3
 310822.16551170NN 30403282140-282211-285299-222.7
 310822.16551170NNU 30403482140232-211223-293237222.7
 3101092.18901730NN 40404282140-282216225293--230.4
220300602.1440895NN 39443282944-279236241-283-211.4
 300802.16001330NN 49444282944-279236242-283-216.6
 300802.16001330NNU 49444482944245-231242-289249216.6
 3409038151480NN 30443282144-310233-313327-2.529.6
 3409038151480NNU 30443482144254-230-313327-2.530
 340118311902400NN 40444282144-310233-313327-2.539.8
 370120410501810NN 31443282744-331241--346-351.9
 370120410501810NNU 31443482744263-241--346268352.3
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
240300601.14051030NN 48484282848-283248255287290-19.77
 300601.1358930NNU4848-259-248255-29026319.9
 320602.1460975NN 39483282948-300251262-309-212.2
 320802.16251450NN 49484282948-300251262-309-217.9
 320802.16251450NNU 49484482948263-251262-309269218
 3609238551600NN 30483282148-330253-333347-2.532.7
 3609238551600NNU 30483482148274-253266-3472802.532.7
 360118312402600NN 40484282148-330253266333347-2.539.3
 360118312402600NNU 40484482148274-253266-3472812.542.7
 400128411702040NN 31483282748-358256-362384-364.2
 400160418803530NNU 41484482748282-256282-384291385
260360752.16701380NN 39523282952-335271288-349-221.4
 3601002.17111540NN 4952K4182952-335271288-349-229.2
 3601002.19352100NN 49524282952-335271288-349-228.3
 3601002.19352100NNU 49524482952292-271288-349296231.1
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
26040010449691810NN 3052K3182152-364276-367384-347.1
 40010449691810NN 30523282152-364276-367384-348.5
 400140415503250NN 40524282152-364276-369384-359.7
 400140415503250NNU 40524482152300-276289-384299365
 440144414802660NN 31523282752-393276-415424-389.1
 440180422004000NNU41524482752306-276300-4243103113
280350691.14451160NN 48564282856-329287.5--340-115.3
 3506924571200NNU4856K-303-287.5298-340307115.5
 380752.16951460NN 39563282956-355291--369-222.7
 3801002.19602230NN 49564284956-355291--369-232.9
 3801002.19602230NNU 49564482956312-291308-369316233
 420106410201950NN 3056K3182156-384296-387404-349.1
 420106410201950NN 30563282156-384296-387404-349.9
 420106410802080NNU3056-320-300--440326351.4
 460146515202790NN 31563282756-413300-416440-495.7
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
300380802.16901760NNU 48604482860324-308320-369330221.7
 420118312302870NN 49604282960-388314335-398-2.551.6
 420118312302870NNU 49604482960339-314335-4063432.551.9
 460118411802250NN 30603282160-418316-421444-371.7
 460118411802250NN 3060K3182160-418316-421444-369.6
 460160419204100NN4060--418316--440-397.6
 500160517603150NN 31603282760-448320-450480-4125
 500160517603150NNU 31603482760358-320--4803654126
320400802.17001840NNU 48644482864346-328340-389350222.8
 440118312603050NN 49644282964-408334355-427-2.550.2
 440118312603050NN 4964K4182964-408334355-427-2.552
 440118312603050NNU 49644482964359-334355-4263632.554.9
 480121413502670NN 30643282164-438336-442464-376.6
 480121413502670NNU 30643482164366-336353442464-376.9
 480160419604300NNU 40644482164367-336353-4643643103
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
320540176520903750NNU 31643482764384-340379-5203894154
3404609039052020NN 39683282968-428353375-447-2.542.9
 460118310402450NN 4968K4182968-428353375-447-2.553.8
 460118313503400NN 49684282968-428353375-447-2.552.1
 460118313503400NNU 49684482968379-354375-4463832.557.8
 520133515603020NN 3068K3182168-473360-477500-4101
 520133515603020NN 30683282168-473360-477500-4104
 520133515603020NNU30683482168387-360--5004004104
 520180524205350NNU 40684482168385-360377-5003894141
3604809039302130NN 39723282972-448373-453467-2.544.9
 480118313903550NNU 49724482972399-374395-4664032.560.6
 540134516303240NN 30723282172-493380-497520-4106
 540134516303240NN 3072K3182172-493380-497520-4106
 540134516303240NNU 30723482172413-380--5204204108
 540180525305450NN 40723282172-496380397-520-4132
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
420620150521304450NN 30843282184-568440-574600-4154
 620150521304450NNU 30843482184478-440--6004744155
 620200531507100NN 40844282184-571440-574600-4189
 620200534007850NNU 40844482184469-440460-6004744209
 700224635506800NNU 31843482784501-444--6605085347
4405401002.19502790NNU 48884482888470-448464-529476249.5
 650157623604900NN 30883282188-596466-600624-5177
 650157623604900NNU 30883482188500-466--6245075178
 720226635006800NN 31883282788-649466--680-5357
460580118312003600NNU48924482892497-474489-5665022.576
 620118416103700NN 39923282992-578476504-604-394.5
 620160424006200NNU 49924482992510-476504-6045153140
 680163624705070NN 3092K3182192-624484-627654-5204
 680163624705070NN 30923282192-624484-627654-5204
480650170526907000NN 49964282996-607500--630-4164
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
480700165626005550NN 30963282196-643506-648674-5211
 700218643008600NNU40964482196533-506523-6745385273
 7902487.540508100NN 31963282796-708512-718758-6447
500670170527207200NNU 49/50044829/500554-520548-6505594171
 720167625805600NN 30/50032821/500-664526-668694-5205
 720167625805600NNU 30/50034821/500563-526--6945705220
530710136520404900NN 39/53032829/530-663550582-690-4149
 710180529007050NNU 49/53044829/530588-550582-6905934202
 780185632006900NN 30/53032821/530-715556-720754-5296
560750140523704860NN 39/56032829/530-705576-711735-4188
 750190532508700NNU 49/56044829/560623-580619-7306284239
 780180824006400NN 6/5602872/560-725580-732765-5266
 820195824606560NN 30/560K31821/560-756586-761794-5341
 8202586410010600NN 40/56042821/560-745586--794-5472
 8202586572013100NNU 40/56044821/560626-586615-7946325420
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
5609202807.5685013700NNU 31/56034827/560650-630---6556738
6008002005385010500NNU 49/60044829/600666-620662-7806724284
 800200534507180NN 49/600K41829/600-755620--780-4257
 870200634207785NN 30/60032821/600-803626-808844-5355
 8702726613814040NNU 40/60044821/600664-626653-8446705530
 9803757.5891018990NNU 41/60044827/600699-633682-94770661100
630780150422907000NNU 48/63044828/630676-646667-7646763160
 8502186420011400NN 49/63042829/630-793656--824-5328
 8502186400010800NNU 49/63044829/630704-656699-8247105356
 9202127.538608820NN 30/63032821/630-845663-851887-6430
 9202907.5688515750NNU 40/63044821/630699-663688-8877056635
 10304007.5990021600NNU 41/63044827/630734-663716-99774061330
6709002306445012330NN 49/67042829/670-838696--874-5419
 9002306495013100NNU 49/67044829/670738-696732-8747445430
 9802307.5462010260NN 30/670K31821/670-901703-907947-6597
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
6709803087.5757817640NNU 40/67044821/670744-703733-9477506765
 10904127.51089022950NNU 41/67044827/670774-703756-105778061500
710870160426408350NNU 48/71044828/710759-726750-8547593203
 9502436485013770NNU49/71044829/710782-736776-9247885480
 10302367.5514811880NN 30/71032821/710-951743-957997-6590
 10303157.5841519440NNU 40/71044821/710784-743772-9977906850
 11504389.51206025650NNU 41/71044827/710820-750800-111082681790
750920170530709180NN 48/75042828/750-879770-887904-4240
 10002506495014400NNU 49/75044829/750831-776824-9748375540
 10902507.5633614400NN 30/75032821/750-1007783-10111057-6705
 10903357.5918021600NNU 40/75044821/750830-783816-10578366925
 12204759.51449031950NNU 41/75044827/750871-790850-118087782230
80010602586524715300NNU 49/80044829/800884-826876-10348905615
 11502587.5702916200NN 30/80032821/800-1065833-10711117-6790
 11503457.5972023400NNU 40/80044821/800885-833871-111789161140
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
80012804759.51485032850NNU 41/80044827/800921-840900-124092882390
85010301805340011400NNU48/85044828/850905-888---9124310
 11202726534616200NNU 49/85044829/850939-876930-10949465715
 12202727.5712816740NN 30/85032821/850-1130883-11361187-6940
 12203657.51053025650NNU 40/85044821/850940-883923-118794761340
 136050061908040500NNU 41/85044827/850976-897935-133496352900
90011802806594018000NNU 49/90044829/900986-926977-11549935805
 12802807.5742518000NN 30/90032821/900-1185933-11911257-61050
 12803757.51152028350NNU 40/90044821/900990-933963-125799761500
 142051561980042750NNU 41/90044827/9001032-9471008-1394103953180
95012503007.5663320160NNU 49/95044829/9501046-9831036-121710536960
 13603007.5821720160NN 30/95032821/950-1255983-12631327-61300
 13604127.51278031950NNU 40/95044821/9501050-9831033-1327105761900
950150054562295051300NNU 41/95044827/9501092-9971068-1474109953830
100013203157.5772223400NNU 49/100044829/10001103-10331096-1287111061250
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
100013203157.5858025200NN49/100042829/1000-12381033-12491287-61200
 14203087.5909022050NN 30/100032821/1000-13161033-13241387-61400
 14204127.51386034200NNU 40/100044821/10001101-10331084-1387110862000
 158058062475055800NNU 41/100044827/10001154-10471128-1474116154270
106014003357.5945027450NNU 49/106044829/10601160-10931150-1367116761350
 15003259.5990024750NN 30/106032821/1060-13911100-13991460-81650
 16606007.52727062550NNU 41/106044827/10601214-11161189-1627122165070
112014603357.5945028350NNU 49/112044829/11201220-11531210-1427122761450
 17506307.53024068850NNU 41/112044827/11201279-11761253-1717128665600
118015403557.51071032400NNU 49/118044829/11801285-12131270-1507129361650
 18506707.53321076500NNU 41/118044827/11801350-12271320-1817135867200
125019507107.53762088200NNU 41/125044827/12501426-12971396-1917143468000
132017204007.51242038250NNU 49/132044829/13201440-13531420-1687144863100
 17204007.51380042500NN49/132042829/1320-16201353-16401687-63060
 20607507.54113095400NNU 41/132044827/13201507-13671474-2027151569400
                 
BoundaryBasic load ratingsPart numberStructure sizeInstallation dimersionMass
mmkNmmmmkg
dDBrminCrCorCurrentOriginalFwEwdamindamaxDaminDamaxdbminramax
140021807759.544550104400NNU 41/140044827/14001598-14701564-21401608810700
150023008009.547520118800NNU 41/150044827/15001709-15701674-22601718812300
Online Message
Learn about our latest products and discounts through SMS or email