811/1250-M Axial Cylindrical Roller Bearings, Single Direction, Single Row, Brass Cage

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811/1250-M

Bore Diameter:1250 mm

Outside Diameter:1460 mm

Width:175 mm

Weight:538 kg

Min. Order:1 Piece

The 811/1250-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 811/1250-M bearing is a Axial cylindrical roller bearings, Single direction, Single row with an inner diameter of 1250 mm , an outer diameter of 1460 mm, a width of 175 mm. It typically uses PN (ABEC-1) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic axial rated load is approximately 8097274 N, its static axial rated load is approximately 46987485 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

1250 mm

Outside Diameter:

1460 mm

Thickness:

175 mm

Weight:

538 KG

Dynamic load Capacity, axial:

8097274 N

Static load Capacity, axial:

46987485 N

Fatigue Load Limit, Axial:

2599196 N

Reference speed (Grease rpm):

Limiting speed (Oil rpm):

200

Specifications:

Old Designations:

811/1250M

Structure:

Cylindrical Roller Thrust Bearings

Number of Rows:

One

Precision Rating:

PN (ABEC-1)

Bearing Material:

GCr15SiMn

Cage Type:

M = 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

811/1250-M bearings ( 1250 mm x 1460 mm x 175 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	811/1250-M
Bearing Type	Axial cylindrical roller bearings, Single direction, Single row
Design	1
Series	811 series (811..-M)
Cage	M = Brass cage
Accuracy class	PN (ABEC-1)
Rows NO.	One
Weight [lb]	1186.0748
C_a Axial Dynamic [lbf]	1820267
C_0a Axial static [lbf]	10562786
C_ua Axial Fatigue [lbf]	584299
n_B Speed ratings (grease) [rpm]	51
n_G Speed ratings (oil) [rpm]	200
d φ Inside [inch]	49.2125
D Φ Outside [inch]	57.4802
T Thickness [inch]	6.8898
B Width [inch]	2.0669
D₁ [inch]	49.4094
d₁ [inch]	57.2834
r(min.) [inch]	0.2362

The 811/1250-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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811/1250-M Axial Cylindrical Roller Bearings, Single Direction, Single Row, Brass Cage

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