239/630-B-MB Double Row Spherical Roller Bearings, Symmetric 3 Ribs

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239/630-B-MB

Bore Diameter:630 mm

Outside Diameter:850 mm

Width:165 mm

Weight:272.5 kg

Min. Order:1 Piece

The 239/630-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 239/630-B-MB bearing is a Double row spherical roller bearings, symmetric 3 ribs with an inner diameter of 630 mm , an outer diameter of 850 mm, a width of 165 mm. GCr15, GCr15SiMn, SUJ2 rings, GCr15, SUJ2 rolling mlement. Its dynamic radial rated load is approximately 4099837 N, its static radial rated load is approximately 9899824 N. It uses CN standard radial clearance, OPEN type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

630 mm

Outside Diameter:

850 mm

Thickness:

165 mm

Weight:

272.5 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

4099837 N

Static load Capacity, Radial (Cor):

9899824 N

Fatigue Load Limit, Radial:

719901 N

Reference speed (Grease rpm):

384

Limiting speed (Oil rpm):

719

Specifications:

Old Designations:

239/630BMB

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:

239..-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

239/630-B-MB bearings ( 630 mm x 850 mm x 165 mm) have the advantages of Self-aligning, extremely high load-bearing capacity, thinnest cross-section, low friction, suitable for confined spaces, and are therefore widely used in the Large crushers, mills, and rotary kilns.

Part Number	239/630-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	239/630B.MB
Equivalent	239/630B.MB
Cage	MB = Solid brass cage, guided on inner ring
Measurement	Metric
Seal type	OPEN
Relubrication	Standard
d φ Inside [inch]	24.803
D Φ Outside [inch]	33.465
B Width [inch]	6.496
n_B Reference speed (grease) [min^–1]	384
n_G Limiting speed (oil) [min^–1]	719
Weight [kg]	272.5
r(min.) Chamfer [inch]	0.236
D₁ [inch]	30.886
d_s [inch]	0.492
n_s [inch]	0.925
C_r Radial Dynamic [lbf]	921643
C_0r Radial static [lbf]	2225480
C_ur Radial Fatigue [lbf]	161833
Temperature - T(min)[°C]	-30
Temperature - T(max)[°C]	+200
Mounting dimensions
d_a(min.) [inch]	25.709
D_a(max.) [inch]	32.559
r_a(max.) [mm]	272.5
Calculation coefficient
e	0.18
Y₀	3.72
Y₁	3.8
Y₂	5.66

The 239/630-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 239/630-B-MB ( 272.5 kg Mass, ID: 630 mm OD: 850 mm WD: 165 mm , 239..-B-MB Series , 2 Rows , CN Radial Clearance , GCr15, GCr15SiMn, SUJ2 Material , 4099837 Radial dynamic , 9899824 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. 239/630-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.

239/630-B-MB Double Row Spherical Roller Bearings, Symmetric 3 Ribs

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