K81228-M Axial Cylindrical Roller And Cage Assemblies

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K81228-M

Bore Diameter:140 mm

Outside Diameter:200 mm

Width:19 mm

Weight:1.8 kg

Min. Order:1 Piece

The K81228-M Cylindrical roller thrust bearings are specifically designed for applications requiring heavy axial loads and stringent positioning accuracy. Classic applications include heavy-duty vertical lathe tables, marine propeller shaft thrust devices, large gearboxes, wind turbine main gearboxes, rolling mill pressing mechanisms, and crane slewing bearings.

The K81228-M bearing is a Axial cylindrical roller and cage assemblies, Single row with an inner diameter of 140 mm , an outer diameter of 200 mm, a width of 19 mm. GCr15SiMn rolling mlement. Its dynamic axial rated load is approximately 453922 N, its static axial rated load is approximately 1448295 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

140 mm

Outside Diameter:

200 mm

Thickness:

19 mm

Weight:

1.8 KG

Dynamic load Capacity, axial:

453922 N

Static load Capacity, axial:

1448295 N

Fatigue Load Limit, Axial:

130760 N

Reference speed (Grease rpm):

725

Limiting speed (Oil rpm):

1689

Specifications:

Structure:

Cylindrical Roller Thrust Bearings

Number of Rows:

One

Cage Type:

M = Brass Cage

Rolling Mlement Material:

GCr15SiMn

Operating Temperature:

-20 to 120 °C

System of Measurement:

Metric

Series:

K812 series (K812..-M)

Rolling Element:

cylindrical rollers

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

200 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

K81228-M bearings ( 140 mm x 200 mm x 19 mm) have the advantages of extremely high axial load capacity, high rigidity, compact axial structure, and a detachable design for easy installation, and are therefore widely used in the Machine tool worktables, extruders, differentials, wind power equipment, and oil drilling machinery.

Part Number	K81228-M
Bearing Type	Axial cylindrical roller and cage assemblies, Single row
Series	K812 series (K812..-M)
Cage	M = Brass Cage
Rows NO.	One
Weight [lb]	3.9683
C_a Axial Dynamic [lbf]	102041
C_0a Axial static [lbf]	325576
C_ua Axial Fatigue [lbf]	29394
n_B Speed ratings (grease) [rpm]	725
n_G Speed ratings (oil) [rpm]	1689
Dw [inch]	0.7480
D_c [inch]	7.8740
D_c1 [inch]	5.5118
E_b Raceway [inch]	5.9449
E_a Raceway [inch]	7.6772

The K81228-M Cylindrical roller thrust bearings mainly consist of a shaft ring, a housing ring, cylindrical rollers, and a cage assembly. The rollers are arranged radially, forming a line contact load-bearing structure.

The advantages of cylindrical roller thrust bearings include extremely high axial load capacity, excellent rigidity, and a low coefficient of friction. Optimized roller end faces and flanges can accommodate slight eccentricity and impact loads, while also featuring a compact structure and high rotational accuracy.

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