81256-M-P5 Axial Cylindrical Roller Bearings, Single Direction, Single Row, Brass Cage

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81256-M-P5

Bore Diameter:280 mm

Outside Diameter:380 mm

Width:80 mm

Weight:31 kg

Min. Order:1 Piece

The 81256-M-P5 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 81256-M-P5 bearing is a Axial cylindrical roller bearings, Single direction, Single row with an inner diameter of 280 mm , an outer diameter of 380 mm, a width of 80 mm. It typically uses P5 (ABEC-5) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic axial rated load is approximately 1455973 N, its static axial rated load is approximately 5593516 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Interchange code: 812 56 M

Dimensions:

Inside Diameter:

280 mm

Outside Diameter:

380 mm

Thickness:

80 mm

Weight:

31 KG

Dynamic load Capacity, axial:

1455973 N

Static load Capacity, axial:

5593516 N

Fatigue Load Limit, Axial:

483080 N

Reference speed (Grease rpm):

289

Limiting speed (Oil rpm):

843

Specifications:

Structure:

Cylindrical Roller Thrust Bearings

Number of Rows:

One

Precision Rating:

P5 (ABEC-5)

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:

812 series (812..-M-P5)

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

81256-M-P5 bearings ( 280 mm x 380 mm x 80 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	81256-M-P5
Bearing Type	Axial cylindrical roller bearings, Single direction, Single row
Design	1
Equivalent	812 56 M
Series	812 series (812..-M-P5)
Cage	M = Brass cage
Accuracy class	P5 (ABEC-5)
Rows NO.	One
Axial cylindrical roller and cage assemblies	K81256-M
Housing locating washer	GS81256
Shaft locating washer	WS81256
Weight [lb]	68.3426
C_a Axial Dynamic [lbf]	327302
C_0a Axial static [lbf]	1257422
C_ua Axial Fatigue [lbf]	108596
n_B Speed ratings (grease) [rpm]	289
n_G Speed ratings (oil) [rpm]	843
d φ Inside [inch]	11.0236
D Φ Outside [inch]	14.9606
T Thickness [inch]	3.1496
B Width [inch]	0.9449
D₁ [inch]	11.1811
d₁ [inch]	14.7638
r(min.) [inch]	0.0827
Mounting dimensions
d_a [inch]	14.6850
D_a(max.) [inch]	11.8110
r_a(max.) [inch]	0.0827

The 81256-M-P5 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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High quality 81256-M-P5 ( 31 kg Mass, ID: 280 mm OD: 380 mm WD: 80 mm , 812 series (812..-M-P5) Series , One Rows , P5 (ABEC-5) Accuracy Class , GCr15SiMn Material ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. 81256-M-P5. then click the button " Send " The web site will make your purchasing information sent to the supplier's mailbox, who will come to contact you upon they get your information at the first time.

81256-M-P5 Axial Cylindrical Roller Bearings, Single Direction, Single Row, Brass Cage

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