81230MPB Axial Cylindrical Roller Bearings, Single Row, Single Direction, Brass Cage

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81230MPB

Bore Diameter:150 mm

Outside Diameter:215 mm

Width:50 mm

Weight:7.17 kg

Min. Order:1 Piece

The 81230MPB 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 81230MPB bearing is a Axial cylindrical roller bearings, Single row, single direction with an inner diameter of 150 mm , an outer diameter of 215 mm, a width of 50 mm. It typically uses PN (ABEC-1) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic axial rated load is approximately 588944 N, its static axial rated load is approximately 1938546 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Interchange code: 812 30 M , 81230MPB

Dimensions:

Inside Diameter:

150 mm

Outside Diameter:

215 mm

Thickness:

50 mm

Weight:

7.17 KG

Dynamic load Capacity, axial:

588944 N

Static load Capacity, axial:

1938546 N

Fatigue Load Limit, Axial:

174831 N

Reference speed (Grease rpm):

633

Limiting speed (Oil rpm):

1526

Specifications:

Structure:

Cylindrical Roller Thrust Bearings

Number of Rows:

One

Precision Rating:

PN (ABEC-1)

Bearing Material:

GCr15SiMn

Cage Type:

MPB = Brass Cage

Rolling Mlement Material:

GCr15SiMn

Bore Type:

Cylindrical bore

Operating Temperature:

-20 to 120 °C

System of Measurement:

Metric

Series:

812 series (812..-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

81230MPB bearings ( 150 mm x 215 mm x 50 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	81230MPB
Bearing Type	Axial cylindrical roller bearings, Single row, single direction
Equivalent	812 30 M , 81230MPB
Series	812 series (812..-M)
Cage	MPB = Brass Cage
Accuracy class	PN (ABEC-1)
Rows NO.	One
Axial cylindrical roller and cage assemblies	K81230-M
Housing locating washer	GS81230
Shaft locating washer	WS81230
Weight [lb]	15.8070
C_a Axial Dynamic [lbf]	132394
C_0a Axial static [lbf]	435785
C_ua Axial Fatigue [lbf]	39302
n_B Speed ratings (grease) [rpm]	633
n_G Speed ratings (oil) [rpm]	1526
d φ Inside [inch]	5.9055
D Φ Outside [inch]	8.4646
T Thickness [inch]	1.9685
D₁ [inch]	6.0236
d₁ [inch]	8.3464
r(min.) [inch]	0.0591
Mounting dimensions
d_a [inch]	8.3071
D_a(max.) [inch]	6.2205
r_a(max.) [inch]	0.0591

The 81230MPB 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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81230MPB Axial Cylindrical Roller Bearings, Single Row, Single Direction, Brass Cage

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