K81238M Axial Cylindrical Roller And Cage Assemblies

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K81238M

Bore Diameter:190 mm

Outside Diameter:270 mm

Width:26 mm

Weight:5.17 kg

Min. Order:1 Piece

The K81238M 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 K81238M bearing is a Axial cylindrical roller and cage assemblies, Single row with an inner diameter of 190 mm , an outer diameter of 270 mm, a width of 26 mm. GCr15SiMn rolling mlement. Its dynamic axial rated load is approximately 879211 N, its static axial rated load is approximately 2999263 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

190 mm

Outside Diameter:

270 mm

Thickness:

26 mm

Weight:

5.17 KG

Dynamic load Capacity, axial:

879211 N

Static load Capacity, axial:

2999263 N

Fatigue Load Limit, Axial:

267463 N

Reference speed (Grease rpm):

517

Limiting speed (Oil rpm):

1212

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

K81238M bearings ( 190 mm x 270 mm x 26 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	K81238M
Bearing Type	Axial cylindrical roller and cage assemblies, Single row
Series	K812 series (K812..-M)
Cage	M = Brass Cage
Rows NO.	One
Weight [lb]	11.3978
C_a Axial Dynamic [lbf]	197646
C_0a Axial static [lbf]	674234
C_ua Axial Fatigue [lbf]	60125
n_B Speed ratings (grease) [rpm]	517
n_G Speed ratings (oil) [rpm]	1212
Dw [inch]	1.0236
D_c [inch]	10.6299
D_c1 [inch]	7.4803
E_b Raceway [inch]	8.0709
E_a Raceway [inch]	10.3543

The K81238M 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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