249/800-B-MB Double Row Spherical Roller Bearings, Symmetric 3 Ribs

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249/800-B-MB

Bore Diameter:800 mm

Outside Diameter:1060 mm

Width:258 mm

Weight:634 kg

Min. Order:1 Piece

The 249/800-B-MB Double-row spherical roller bearings are suitable for heavy-load, impact, and eccentric conditions. Classic applications include vibrating screen exciters, crushers, fans, paper machine press rolls, mining conveyor equipment, and marine propulsion shafts.

The 249/800-B-MB bearing is a Double row spherical roller bearings, symmetric 3 ribs with an inner diameter of 800 mm , an outer diameter of 1060 mm, a width of 258 mm. GCr15, GCr15SiMn, SUJ2 rings, GCr15, SUJ2 rolling mlement. Its dynamic radial rated load is approximately 7699823 N, its static radial rated load is approximately 20299801 N. It uses CN standard radial clearance, OPEN type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

800 mm

Outside Diameter:

1060 mm

Thickness:

258 mm

Weight:

634 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

7699823 N

Static load Capacity, Radial (Cor):

20299801 N

Fatigue Load Limit, Radial:

1389926 N

Reference speed (Grease rpm):

135

Limiting speed (Oil rpm):

454

Specifications:

Old Designations:

249/800BMB

Structure:

Spherical Roller Bearings

Number of Rows:

Radial Clearance Trade No.:

Bearing Material:

GCr15, GCr15SiMn, SUJ2

Cage Type:

MB = Solid brass cage, guided on inner ring

Seals Type:

OPEN

Rolling Mlement Material:

GCr15, SUJ2

Bore Type:

Z = Cylindrical bore

Operating Temperature:

-30 to +200 °C

System of Measurement:

Metric

Series:

249..-B-MB

Rolling Element:

symmetrical rollers

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

10 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

249/800-B-MB bearings ( 800 mm x 1060 mm x 258 mm) have the advantages of Self-aligning, high load-bearing capacity, and impact resistant, and are therefore widely used in the Mining machinery, metallurgical equipment, papermaking machinery, vibrating screens, wind turbines, and large industrial gearboxes.

Part Number	249/800-B-MB
Design Type	B = with fixed central rib
Bore Type	Z = Cylindrical bore
RIC	CN
Row	2
Bearing Type	Double row spherical roller bearings, symmetric 3 ribs
Manufacturer Part Code	249/800B.MB
Equivalent	249/800B.MB
Cage	MB = Solid brass cage, guided on inner ring
Measurement	Metric
Seal type	OPEN
Relubrication	Standard
d φ Inside [inch]	31.496
D Φ Outside [inch]	41.732
B Width [inch]	10.157
n_B Reference speed (grease) [min^–1]	135
n_G Limiting speed (oil) [min^–1]	454
Weight [kg]	634
r(min.) Chamfer [inch]	0.236
D₁ [inch]	38.527
d_s [inch]	0.492
n_s [inch]	0.925
C_r Radial Dynamic [lbf]	1730920
C_0r Radial static [lbf]	4563395
C_ur Radial Fatigue [lbf]	312455
Temperature - T(min)[°C]	-30
Temperature - T(max)[°C]	+200
Mounting dimensions
d_a(min.) [inch]	32.402
D_a(max.) [inch]	40.827
r_a(max.) [mm]	634
Calculation coefficient
e	0.23
Y₀	2.92
Y₁	2.98
Y₂	4.44

The 249/800-B-MB Double-row spherical roller bearings mainly consist of an inner ring, an outer ring, two rows of spherical rollers, a cage, and seals. The outer ring raceway has a spherical structure, while the inner ring has a double-row raceway. The rollers and raceways are logarithmically curved. The cage is typically made of stamped steel or machined brass.

Double-row spherical roller bearings possess excellent self-aligning properties, compensating for shaft deflection, installation errors, and misalignment. They can simultaneously withstand radial loads and bidirectional axial loads, exhibiting extremely high load-bearing capacity and strong impact resistance. Furthermore, the internal clearance can be optimized for vibration conditions, effectively reducing frictional temperature rise.

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High quality 249/800-B-MB ( 634 kg Mass, ID: 800 mm OD: 1060 mm WD: 258 mm , 249..-B-MB Series , 2 Rows , CN Radial Clearance , GCr15, GCr15SiMn, SUJ2 Material , 7699823 Radial dynamic , 20299801 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. 249/800-B-MB. 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.

249/800-B-MB Double Row Spherical Roller Bearings, Symmetric 3 Ribs

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