DEEP GROOVE BALL BEARINGS

Deep Groove Ball Bearings

carpl company distributor of bearing manufactured By TMB and ZWZ. to learn more about Deep Groove Ball Bearing read the following article.

Deep Groove Ball Bearings

Deep Groove Ball Bearings are composed of four basic parts, including inner ring, outer ring, steel ball and cage. Under normal operating conditions, the inner raceway, the outer raceway and the steel balls bear the load, and the cage separates the steel balls and maintains stability. Single-row radial Deep Groove Ball Bearings have simple structure with no separation of inner rings and outer rings, that is easy to use. Deep Groove Ball Bearings are the most widely used type of bearings in the machinery industry with a wide range of applications such as precision instrument, low-noise motor, automobile, motorcycle, woodworking machinery, textile machinery, mining machinery, electromechanical equipment, and plastic machinery, office equipment, medical equipment, fitness machinery, national defense industry, aviation, aerospace and sports equipment, general machinery and so on

Deep Groove Ball Bearings are mainly used to bear radial load, but can also bear a certain amount of axial load. When increasing the radial clearance of the bearing, it has the properties of a radial thrust bearing and can withstand larger axial loads. This type of bearing can limit axial movement in two directions. According to the size of the clearance, the inner and outer rings are allowed to be relatively inclined by 8′ to 16′. In addition, since the friction torque of Deep Groove Ball Bearings is smaller than that of other types of bearings, Deep Groove Ball Bearings are more suitable for high-speed operating conditions

Product category

The Deep Groove Ball Bearings currently produced by ZWZ can be roughly divided into the following  structural types

Single-row Deep Groove Ball Bearings

Single-row Deep Groove Ball Bearings with shield

Single-row Deep Groove Ball Bearings with seals

The single-row Deep Groove Ball Bearings with snap groove and snap ring

full balls

w/ filling notch

Extended IR with seal(s)

· Single-row Deep Groove Ball Bearings

Fold-

Generally, this type of bearing can be used in parts that have no special requirements for installation, sealing, and matching, and is suitable for high-speed and ultra-high-speed operations

· Single-row Deep Groove Ball Bearings with shield

This type of bearing can be used in such applications of difficult lubrication and lubrication inspection as well as special conditions. There is a gap between the shield and the inner ring. Bearings with shield on both sides have been filled with proper

· Single-row Deep Groove Ball Bearings with seals

The seals generally use steel-frame rubber seals. According to the contact form of the seals and rib of the inner ring, seals can be divided into contact seals and non-contact seals. For the non-contact sealed bearing, it can operate at the same rotationa

· The single-row Deep Groove Ball Bearings with snap groove and snap ring

The single-row Deep Groove Ball Bearings with snap groove and snap ring on the outer ring can use the snap ring for axial positioning, which simplifies the installation and positioning of the bearing in the housing

· full balls

w/ filling notch

· Extended IR with seal(s)

Tolerance

The tolerance class of the standard Deep Groove Ball Bearings is in accodance with GB/T 307.1 and ISO 492

Radial clearance

The  standard Deep Groove Ball Bearings have internal clearances of 2, standard (N), 3, 4 and 5 class, all of which comply with GB/T 4604.1. Bearings with internal clearance greater than or less than the standard value can be customized according to user requirements 

Cage

 Deep Groove Ball Bearings generally use nylon cages (containing glass fiber), stamped steel cages and solid brass  cages. When the nylon cage is adopted, the suffix shall be added to the bearing. When the outer diameter is less than 400 mm, the stamped steel cage shall be used without the suffix. When the outer diameter is greater than 400 mm, the solid brass cage shall be often used without the suffix

Allowable angle error

Deep Groove Ball Bearings allow the relative tilting angle error of the inner ring and outer ring. According to the radial  clearance, the list is as follows

Operating temperature

For Deep Groove Ball Bearings, the operating temperature must not exceed 120℃, and shall also be affected by lubricants. If the actual operating temperature exceeds 120℃, please call for advice

Equivalent dynamic load

Equivalent dynamic load

P=XFr＋YFa［kN］

Where

Fr: Radial load kN

Fa: Axial load kN

X and Y coefficients are shown in the table

Equivalent static load

Equivalent static load

P0＝Fr［kN］ Fa/Fr≤0.8

P0＝0.6Fr+0.5Fa［kN］ Fa/Fr＞0.8

Code description

The meanings of the suffixes used for Deep Groove Ball Bearings are as follows

CN Radial clearance of normal class: usually only be used in combination with the following letters to indicate a narrow or offset clearance range

H The narrow clearance range is equivalent to the upper half part of the original clearance range

M The narrow clearance range is equivalent to the middle part of the original clearance range

L The narrow clearance range is equivalent to the lower half part of the original clearance rang

P The offset clearance range is equivalent to the composition of the upper half part of the original clearance range and the lower half part of the next set of clearance range

The above letters are also applicable to the following clearance groups combined into the corresponding meanings: C2, C3, C4 and C5, such as C2H

C2  Radial clearance is smaller than the normal class

C3  Radial clearance is greater than the normal class

C4  Radial clearance is greater than C3

C5  Radial clearance is greater than C4

DB  Two single-row DGBB matched back to back

DF  Two single-row DGBB matched face to face

DT  Two single-row DGBB matched in series

E  Internal design changes, with reinforced structure

J  Stamped steel cage. When the material changes, it is distinguished by adding the number

M  Solid brass cage, guided by steel balls. For different designs and materials, add digital logos after M, such as M2

MA  Solid brass cage, guided by the outer ring

MB  Solid brass cage, guided by the inner ring

MT33 Lithium base grease, with NLGI consistency of 3 and the temperature range of -30 to +120°C (standard filling amount)

MT47 Lithium base grease, with NLGI consistency of 2 and the temperature range of -30 to +110°C (standard filling amount)

N  Outer ring with snap groove

NR  Outer ring with snap groove and snap ring

N1  With a positioning groove on the side of the outer ring

P5  Dimensional accuracy and rotation accuracy comply with ISO tolerance Class 5

P6  Dimensional accuracy and rotation accuracy comply with ISO tolerance Class 6

P52 P5+C2 Dimensional accuracy and rotation accuracy comply with ISO tolerance Class 5, with 2 sets of clearances

P62 P6+C2 Dimensional accuracy and rotation accuracy comply with ISO tolerance Class 6, with 2 sets of clearances

P63 P6+C3 Dimensional accuracy and rotation accuracy comply with ISO tolerance Class 6, with 3 sets of clearances

RS  Bearings with framed seals (contact) on one side

2RS  Bearings with RS seals on both sides

RS1  Bearings with framed seals (contact) on one side. The material of seals is vulcanized rubber

2RS1  Bearings with RS1 seals on both sides

RS2  Bearings with framed seals (contact) on one side. The material of seals is viton

2RS2  Bearings with RS2 seals on both sides

RZ  Bearings with framed seals (non-contact) on one side

2RZ  Bearings with RZ seals on both sides

S0 Bearing ring has been subjected to high tempering treatment, and the operation temperature can reach 150℃

S1 Bearing ring has been subjected to high tempering treatment, and the operation temperature can reach 200℃

TN1  Cage is nylon cage

Z  With shield on one side of bearing

2Z  With shield on both sides of bearing

ZN Z+N  With shield on the opposite side of the snap groove

ZNR Z+NR  With shield on the opposite side of the snap groove and the snap ring

ZNB Z+NB  With shield on the same side of the snap groove

ZNBR Z+NR  With shield on the same side of the snap groove and the snap ring

2ZN 2Z+N  With shield on both sides of bearing, and with a snap groove on the outer ring

2ZNR 2Z+NR  With shield on both sides of bearing, and with a snap groove and a snap ring on the outer ring

TH  Glass fiber reinforced phenolic resin cage (basket shape)

V  Full complement of rolling elements (without cage)

3D graphics

2D graphics