81172MPB Axial Cylindrical Roller Bearings, Single Direction, Single Row, Brass Cage

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81172MPB

Bore Diameter:360 mm

Outside Diameter:440 mm

Width:65 mm

Weight:22.5 kg

Min. Order:1 Piece

The 81172MPB 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 81172MPB bearing is a Axial cylindrical roller bearings, Single direction, Single row with an inner diameter of 360 mm , an outer diameter of 440 mm, a width of 65 mm. It typically uses PN (ABEC-1) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic axial rated load is approximately 1136532 N, its static axial rated load is approximately 5087982 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Interchange code: 811 72 M , 81172MPB

Dimensions:

Inside Diameter:

360 mm

Outside Diameter:

440 mm

Thickness:

65 mm

Weight:

22.5 KG

Dynamic load Capacity, axial:

1136532 N

Static load Capacity, axial:

5087982 N

Fatigue Load Limit, Axial:

402556 N

Reference speed (Grease rpm):

248

Limiting speed (Oil rpm):

702

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:

-30 to 150 °C

System of Measurement:

Metric

Series:

811 series (811..-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

81172MPB bearings ( 360 mm x 440 mm x 65 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	81172MPB
Bearing Type	Axial cylindrical roller bearings, Single direction, Single row
Design	1
Equivalent	811 72 M , 81172MPB
Series	811 series (811..-M)
Cage	MPB = Brass Cage
Accuracy class	PN (ABEC-1)
Rows NO.	One
Axial cylindrical roller and cage assemblies	K81172-M
Housing locating washer	GS81172
Shaft locating washer	WS81172
Weight [lb]	49.6035
C_a Axial Dynamic [lbf]	255492
C_0a Axial static [lbf]	1143778
C_ua Axial Fatigue [lbf]	90494
n_B Speed ratings (grease) [rpm]	248
n_G Speed ratings (oil) [rpm]	702
d φ Inside [inch]	14.1732
D Φ Outside [inch]	17.3228
T Thickness [inch]	2.5591
B Width [inch]	0.7874
D₁ [inch]	14.3307
d₁ [inch]	17.1653
r(min.) [inch]	0.0787
Mounting dimensions
d_a [inch]	17.0866
D_a(max.) [inch]	14.7244
r_a(max.) [inch]	0.0787

The 81172MPB 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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81172MPB Axial Cylindrical Roller Bearings, Single Direction, Single Row, Brass Cage

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