China high quality High Precision Angular Contact Ball Bearing 7012c with Hot selling

Product Description

High precision Angular Contact Ball Bearing 7012c

Quick Details:
Structure:Angular Contact
Type:Ball
Brand Name:NSK
Bore Size:10 – 200 mm
Outside Diameter:22 – 420 mm
Model Number:7901C
Precision Rating:P0, P6, P5, P4
Seals Type:Open and Sealed Type Available
Number of Row:Single Row
Material::GCr15( SAE52100/100CR6)
Clearance::C1, C2, C3, C4
Packing::Brand Box / Export Packing
Sample Orders::Acceptable
Trade Terms::FOB/ CFR/ CIF/ EXW
Payment Terms::T/T or L/C
OEM::Avaiable

Specifications:
CZPT Angular Contact Ball Bearing 7901C
1.High Speed
2.High Precision
3.Long Life
4.Higher Radial and Axial Loads

Packaging & Delivery:
Packaging Detail:Standard packaging carton packaging OEM service
Delivery Detail:5-15days 

Suffix definitions of Angular contact ball bearing 7012C 7012AC 7212C
B: The modified internal structure
 
MP: machined window-type brass cage

TVP: Glass fiber reinforced nylon cage
 
UA: Universal design bearings installed in pairs and small groups bearing axial clearance

UO: Universal design installed in pairs of bearings, bearing zero axial clearance group

DA: Dual semi-inner (double row angular contact ball bearings)

TVH: Glass fiber reinforced polyamide cage, ball guide

Application:
Motorcycles, Electric Bicycles, Electric Motors (Scooters), Electric Tools, 
Fans, Sports Apparatus, Washing Machines, Dust Collectors, Ventilators, Textile 
Machines, Running Machines (Treadmills), Household Appliances, Water Pumps, 
Agricultural Machines, Precision Machineries, etc.

Bearing No. Boundary Dimensions(mm) Basic Load Ratings(N) Limiting Speeds (RPM) Mass(kg)
d D B r min r1 min Cr C0r Grease Oil approx
7901A5 12 24 6 0.3 0.15 3 200  1 770  38 000  53 000  0.011
7901C 24 6 0.3 0.15 3 350  1 860  45 000  63 000  0.011
7001A 28 8 0.3 0.15 5 800  2 980  28 000  38 000  0.571
7001C 28 8 0.3 0.15 5 800  2 900  40 000  56 000  0.571
7201A 32 10 0.6 0.3 8 000  4 050  26 000  34 000  0.037
7201B 32 10 0.6 0.3 7 450  3 750  18 000  26 000  0.038
7201C 32 10 0.6 0.3 7 900  3 850  36 000  50 000  0.041
7301A 37 12 1 0.6 9 450  4 500  18 000  24 000  0.06
7301B 37 12 1 0.6 8 850  4 200  16 000  22 000  0.062

 

Model Diameter(mm) α 15º α 25º Cage Material
Rated load(KN) Limit speeding (r/min) Rated load(KN) Limit speeding(r/min)
Inner Outer Height Cr / Cor Grease/ Oil Cr/Cor Grease/ Oil
7003 17 35 10 6.7 / 4.9 44000/66000 6.4/ 4.7 39000/59000 Bakelite
7004 20 42 12 9.6 /6.3 37000/55000 9.2/ 6.0 33000/49000 Bakelite
7005 25 47 12 12.9 /8.7 33000/49000 12.3/ 8.3 29000/44000 Bakelite
7006 30 55 13 15.7 /11.6 27000/42000 14.9 /10.9 23000/37000 Bakelite
7007 35 62 14 19.3 /17.5 19000/33000 10.4 /10.3 19000/33000 Bakelite
7008 40 68 15 19.9 /19.1 18000/31000 18.9 /18.2 16000/27000 Bakelite
7009 45 75 16 26.7 /25.3 16000/27000 25.4 /24.1 15000/25000 Bakelite
7571 50 80 16 27.6 /27.5 15000/25000 26.2 /26.2 14000/23000 Bakelite
7011 55 90 18 36.7 /37.1 13000/21000 34.8 /35.3 12000/19000 Bakelite
7012 60 95 18 37.8/ 40 13000/21000 35.8/ 38 11000/18000 Bakelite
7013 65 100 18 38.9 /42.9 12000/19000 36.8 /40.7 10000/ 17000 Bakelite
7014 70 110 20 49.9 /55.5 11000/18000 47.2 /52.7 9000 /16000 Bakelite
7015 75 115 20 51.3 /59.2 10000/17000 48.5 /56.2 8500 /15000 Bakelite

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Contact Angle: 15°
Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single
Load Direction: Thrust Bearing
Material: Bearing Steel
Samples:
US$ 10/Set
1 Set(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

tapered roller bearing

Can you Explain the Design and Construction of Tapered Roller Bearings?

The design and construction of tapered roller bearings are characterized by their conical geometry and specific components that enable them to handle radial and axial loads simultaneously. Here’s an overview of their design and construction:

  • Components:

Tapered roller bearings consist of the following components:

  • Inner Ring:

The inner ring has a conical raceway on its inner surface, which matches the conical shape of the rollers. It serves as the raceway for the rollers and provides support to the rotating assembly.

  • Outer Ring:

The outer ring also features a conical raceway on its inner surface that complements the shape of the rollers. The outer ring provides a rigid structure to house the entire bearing assembly.

  • Tapered Rollers:

The rollers have a conical shape with varying diameters along their length. This design allows the rollers to make point contact with the inner and outer raceways, distributing loads efficiently.

  • Cage:

The cage or retainer holds the rollers in position, maintaining proper spacing and preventing them from coming into contact with each other. The cage material can vary, and its design may affect factors like friction and heat generation.

  • Conical Geometry:

The distinguishing feature of tapered roller bearings is their conical geometry. The conical angle is defined by the contact angle between the roller axis and the bearing axis. This angle facilitates effective load distribution and axial load support.

  • Load Distribution:

The conical shape of the rollers and raceways allows tapered roller bearings to handle both radial and axial loads. Radial loads are primarily supported by the larger diameter of the rollers at the large end of the cone, while axial loads are absorbed by the smaller diameter near the small end of the cone.

  • Adjustable Clearance and Preload:

Many tapered roller bearings allow for adjustable internal clearance or preload. This feature enables fine-tuning of the bearing’s internal play, optimizing performance and minimizing friction.

  • Thrust Capability:

Tapered roller bearings can handle thrust (axial) loads in one direction, making them suitable for applications where axial loads need to be managed along with radial loads.

  • Applications:

Tapered roller bearings find applications in various industries, including automotive, heavy machinery, aerospace, and more. They are used in scenarios that require efficient load distribution and handling of combined loads.

In summary, tapered roller bearings are designed with conical geometry to accommodate both radial and axial loads. Their specific components, such as tapered rollers and a cage, work together to ensure effective load distribution, making them suitable for a wide range of industrial applications.

tapered roller bearing

What are Tapered Roller Bearings and How do They Function in Machinery?

Tapered roller bearings are a type of rolling element bearing designed to handle both radial and axial loads by providing a conical geometry. They consist of inner and outer rings, tapered rollers, and a cage that holds the rollers in place. Tapered roller bearings are commonly used in various machinery and equipment for their ability to support high radial and axial loads simultaneously. Here’s how they function in machinery:

  • Geometry:

Tapered roller bearings have an inner ring with a conical surface and an outer ring with a matching conical surface. The rollers are also shaped like truncated cones. This geometry allows the rollers to make contact with both the inner and outer raceways at a common point on the bearing axis, distributing loads more effectively.

  • Load Distribution:

The conical shape of tapered rollers enables them to handle both radial and axial loads. Radial loads are supported by the larger diameter of the rollers near the large end of the cone, while axial loads are absorbed by the smaller diameter near the small end of the cone.

  • Adjustable Clearance:

Tapered roller bearings often allow for adjustable clearance or preload. This feature permits fine-tuning of the bearing’s internal play to optimize performance, reduce friction, and prevent excessive wear.

  • Thrust Capability:

Tapered roller bearings can handle thrust (axial) loads in one direction, making them suitable for applications where axial loads need to be managed along with radial loads.

  • Applications:

Tapered roller bearings are commonly used in various machinery and equipment:

  • Automotive Industry:

Tapered roller bearings are widely used in wheel hubs, transmissions, and differential systems in automobiles, where they handle radial and axial loads experienced during driving.

  • Heavy Machinery:

In construction equipment, mining machinery, and industrial machinery, tapered roller bearings support heavy loads and shocks, making them suitable for applications like earthmoving and material handling.

  • Aerospace:

Tapered roller bearings are used in aircraft landing gear, where they support both vertical and horizontal loads during takeoff, landing, and taxiing.

  • Railways:

In trains, tapered roller bearings are used in wheelsets and axles to manage radial and axial loads that occur as the train moves along curves and straight tracks.

  • Wind Energy:

Tapered roller bearings are employed in wind turbine gearboxes, where they handle the radial and axial loads associated with converting wind energy into electrical power.

  • Installation:

Installation of tapered roller bearings often involves adjusting the internal clearance or preload to optimize performance. Proper lubrication is crucial to ensure smooth operation and longevity.

In summary, tapered roller bearings function by utilizing their conical geometry to support both radial and axial loads, making them versatile components in a wide range of machinery and equipment across various industries.

tapered roller bearing

What are the Common Signs of Wear or Damage in Tapered Roller Bearings?

Identifying signs of wear or damage in tapered roller bearings is crucial for maintaining optimal performance and preventing costly failures. Here are the common signs to look for:

  • Abnormal Noise:

Unusual noises, such as grinding, clicking, or rumbling sounds, may indicate damage within the bearing. These noises could result from worn rollers, raceways, or insufficient lubrication.

  • Vibration:

Excessive vibration or unusual vibrations not typically present during operation may indicate an issue with the bearing. Vibration can result from misalignment, worn components, or uneven loading.

  • Increased Operating Temperature:

If the bearing becomes excessively hot during operation, it could indicate inadequate lubrication, excessive friction, or other issues. Monitoring temperature changes can help identify potential problems.

  • Irregular Rotation:

If the bearing experiences irregular rotation, such as sticking or rough movement, it could be due to damaged rollers, misalignment, or improper preload.

  • Visible Wear:

Inspect the bearing for visible signs of wear or damage, such as pitting, scoring, discoloration, or deformation of the bearing components.

  • Increased Noise or Vibration Under Load:

If the bearing makes more noise or vibrates noticeably when subjected to load, it could indicate that the bearing is unable to handle the applied load properly.

  • Uneven Wear:

Uneven wear patterns on the rollers or raceways can suggest misalignment or inadequate lubrication, causing the bearing to experience uneven loading.

  • Loss of Performance:

If the bearing’s performance decreases, such as reduced efficiency or increased friction, it may indicate wear, contamination, or other issues affecting the bearing’s operation.

  • Looseness or Play:

If there’s excessive play or looseness in the bearing assembly, it could be a sign of worn components or inadequate preload, impacting the bearing’s stability and performance.

  • Leaks or Contaminants:

Inspect for leaks of lubricant or the presence of contaminants around the bearing. Leaks can indicate seal damage, and contaminants can accelerate wear.

  • Observable Damage to Components:

If any bearing components, such as rollers, cages, or raceways, appear visibly damaged or deformed, immediate attention is necessary to prevent further issues.

Regular inspection and maintenance are essential to catch these signs early and prevent further damage. Addressing wear or damage promptly can extend the bearing’s lifespan and avoid costly downtime.

China high quality High Precision Angular Contact Ball Bearing 7012c   with Hot sellingChina high quality High Precision Angular Contact Ball Bearing 7012c   with Hot selling
editor by CX 2024-05-15

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