China OEM High Precision Angular Contact Ball Bearing 7218 Acdga/P4a drive shaft bearing

Product Description

High precision angular contact ball bearing 7218 ACDGA/P4A 

NSK angular contact ball bearing 7571, TAC series related products.


Model No. Size(d*D*B) mm Weight (KG) Model No. Size(d*D*B) mm Weight (KG)
724C 4*13*5 0.005 7224C 120*215*40 5.6
725C 5*16*5 0.008 7226C 130*230*40 7.3
726C 6*19*6 0.01 7228C 140*250*42 8.6
727C 7*22*7 0.013 7230C 150*270*45 12.1
728C 8*24*8 0.017 7232C 160*290*48 14.5
729C 9*26*8 0.02 7234AC 170*310*52 17.2
7200C 10*30*9 0.031 7236AC 180*320*52 17.9
7201C 12*32*10 0.036 7238AC 190*340*55 20
7202C 15*35*11 0.04 7240AC 200*360*58 25.2
7203C 17*40*12 0.063 7244AC 220*400*65 36.1
7204C 20*47*14 0.102 7248B 240*440*72 50.9
7205C 25*52*15 0.127 7303C 17*47*14 0.12
7206C 30*62*16 0.233 7304C 20*52*15 0.15
7207C 35*72*17 0.3 7305C 25*62*17 0.23
7208C 40*80*18 0.37 7306C 30*72*19 0.35
7209C 45*85*19 0.5 7307C 35*80*21 0.47
7210C 50*90*20 0.46 7308C 40*90*23 0.66
7211C 55*100*21 0.6 7309C 45*100*25 0.888
7212C 60*110*22 0.8 7310C 50*110*27 1.08
7213C 65*120*23 1.02 7311C 55*120*29 1.44
7214C 70*125*24 1.1 7312C 60*130*31 1.71
7215C 75*130*25 1.29 7313C 65*140*33 2.23
7216C 80*140*26 1.48 7314C 70*150*35 2.67
7217C 85*150*28 1.84 7315C 75*160*37 3.1
7218C 90*160*30 2.24 7316C 80*170*39 3.97
7219C 95*170*32 3.2 7317C 85*180*41 4.84
7220C 100*180*34 3.27 7318C 90*190*43 5
7221C 105*190*36 3.95 7319C 95*200*45 5.7
7222C 110*200*38 4.81 7320C 100*215*47 8.5

Quick Details:
Structure:Angular Contact
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

Angular contact ball bearing can bear radial load and axial load at the same time. CZPT to work at a higher speed. The greater the contact angle, the higher the axial load bearing capacity. High precision and high speed bearings are usually taken at 15 degree contact angle. Under axial force, the contact angle will increase.
Angular contact ball bearings are: type 7000C (=15 / deg), type 7000AC (=25 / deg) and 7000B (=40 / deg) several types. The lock on the outer ring of the bearing, generally can not be separated from the inner and outer rings, can bear radial and axial joint load and a direction of the axial load. The ability to bear axial load is determined by the contact angle, the greater the contact angle, the ability to bear axial load is high. The bearing can limit the axial displacement of the shaft or the outer shell in 1 direction.
The contact ball bearing can bear radial load and axial load at the same time, but also can bear pure axial load, the axial load capacity is determined by the contact angle, and increases with the increase of the contact angle.
Single row angular contact ball bearing spindle, the high frequency motor, burning steam turbine, centrifugal separator, the small car front differential pinion shaft, booster pump, drilling platform, food machinery, dividing head, welding, low noise type cooling tower, electrical and mechanical equipment, painting equipment, slot machine bed plate, arc welding machine
Double row angular contact ball bearing: pump, roots blower, air compressor, various types of transmission, fuel injection pump, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, electric welding machine, electric iron, square box, gravity spray gun, wire stripping machine, semi axis, inspection equipment, fine chemical, mechanical analysis

CZPT Angular Contact Ball Bearing
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

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

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

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Customized Request

ball bearing

Can you Provide Examples of Industries where Ball Bearings are Crucial Components?

Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:

  • Automotive Industry:

Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.

  • Aerospace Industry:

In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.

  • Industrial Machinery:

Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.

  • Medical Equipment:

In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.

  • Robotics and Automation:

Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.

  • Renewable Energy:

Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.

  • Marine and Shipbuilding:

Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.

  • Heavy Equipment and Construction:

In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.

  • Electronics and Consumer Appliances:

Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.

  • Oil and Gas Industry:

In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.

These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.

ball bearing

What are the Differences between Deep Groove Ball Bearings and Angular Contact Ball Bearings?

Deep groove ball bearings and angular contact ball bearings are two common types of ball bearings, each designed for specific applications and load conditions. Here are the key differences between these two types of bearings:

  • Design and Geometry:

Deep Groove Ball Bearings:

Deep groove ball bearings have a simple design with a single row of balls that run along deep raceways in both the inner and outer rings. The rings are usually symmetrical and non-separable, resulting in a balanced load distribution.

Angular Contact Ball Bearings:

Angular contact ball bearings have a more complex design with two rows of balls, oriented at an angle to the bearing’s axis. This arrangement allows for the transmission of both radial and axial loads, making them suitable for combined loads and applications requiring high precision.

  • Load Carrying Capacity:

Deep Groove Ball Bearings:

Deep groove ball bearings are primarily designed to carry radial loads. They can handle axial loads in both directions, but their axial load-carrying capacity is generally lower compared to angular contact ball bearings.

Angular Contact Ball Bearings:

Angular contact ball bearings are specifically designed to handle both radial and axial loads. The contact angle between the rows of balls determines the bearings’ axial load-carrying capacity. They can handle higher axial loads and are commonly used in applications with thrust loads.

  • Contact Angle:

Deep Groove Ball Bearings:

Deep groove ball bearings have no defined contact angle, as the balls move in a deep groove along the raceways. They are primarily designed for radial loads.

Angular Contact Ball Bearings:

Angular contact ball bearings have a specified contact angle between the rows of balls. This contact angle allows them to carry both radial and axial loads and is crucial for their ability to handle combined loads.

  • Applications:

Deep Groove Ball Bearings:

Deep groove ball bearings are commonly used in applications that primarily require radial loads, such as electric motors, pumps, and conveyor systems. They are also suitable for high-speed operation.

Angular Contact Ball Bearings:

Angular contact ball bearings are used in applications where both radial and axial loads are present, such as in machine tools, automotive wheel hubs, and aerospace components. They are especially useful for applications that require precise axial positioning and handling of thrust loads.

  • Limitations:

Deep Groove Ball Bearings:

Deep groove ball bearings are not as suitable for handling significant axial loads and may experience skidding under certain conditions due to their deep raceways.

Angular Contact Ball Bearings:

Angular contact ball bearings can experience increased heat generation and wear at higher speeds due to the contact angle of the balls.

In summary, the design, load-carrying capacity, contact angle, and applications differ between deep groove ball bearings and angular contact ball bearings. Choosing the appropriate type depends on the specific load conditions and requirements of the application.

ball bearing

How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?

Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:

  • Design:

Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.

Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.

  • Friction and Efficiency:

Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.

Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.

  • Load Capacity:

Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.

Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.

  • Variability:

Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.

Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.

  • Speed Capability:

Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.

Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.

  • Applications:

Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.

Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.

In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.

China OEM High Precision Angular Contact Ball Bearing 7218 Acdga/P4a   drive shaft bearingChina OEM High Precision Angular Contact Ball Bearing 7218 Acdga/P4a   drive shaft bearing
editor by CX 2024-05-15