23960BK.MB.C4 Double Row Spherical Roller Bearings, Main Dimensions To DIN 635-2

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23960BK.MB.C4

Bore Diameter:300 mm

Outside Diameter:420 mm

Width:90 mm

Weight:37.8 kg

Min. Order:1 Piece

The 23960BK.MB.C4 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 23960BK.MB.C4 bearing is a Double row spherical roller bearings, main dimensions to DIN 635-2 with an inner diameter of 300 mm , an outer diameter of 420 mm, a width of 90 mm. GCr15, GCr15SiMn, SUJ2 rings, GCr15, SUJ2 rolling mlement. Its dynamic radial rated load is approximately 1269821 N, its static radial rated load is approximately 2649814 N. It uses C4 standard radial clearance, OPEN type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

300 mm

Outside Diameter:

420 mm

Thickness:

90 mm

Weight:

37.8 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

1269821 N

Static load Capacity, Radial (Cor):

2649814 N

Fatigue Load Limit, Radial:

169935 N

Reference speed (Grease rpm):

975

Limiting speed (Oil rpm):

1753

Specifications:

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:

K = Tapered bore (taper 1:12)

Operating Temperature:

-30 to +200 °C

System of Measurement:

Metric

Series:

239..-K

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

23960BK.MB.C4 bearings ( 300 mm x 420 mm x 90 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	23960BK.MB.C4
Design Type	B = with fixed central rib
Bore Type	K = Tapered bore (taper 1:12)
RIC	C4
Row	2
Adapter sleeve	H3960
Bearing Type	Double row spherical roller bearings, main dimensions to DIN 635-2
Manufacturer Part Code	23960BK.MB-C4
Equivalent	23960BK.MB.C4
Withdrawal sleeve	AH3960G
Cage	MB = Solid brass cage, guided on inner ring
Measurement	Metric
Seal type	OPEN
Relubrication	Standard
d φ Inside [inch]	11.811
D Φ Outside [inch]	16.535
B Width [inch]	3.543
n_B Reference speed (grease) [min^–1]	975
n_G Limiting speed (oil) [min^–1]	1753
Weight [kg]	37.8
r(min.) Chamfer [inch]	0.118
D₁ [inch]	15.142
d_s [inch]	0.374
n_s [inch]	0.697
C_r Radial Dynamic [lbf]	285455
C_0r Radial static [lbf]	595678
C_ur Radial Fatigue [lbf]	38201
Temperature - T(min)[°C]	-30
Temperature - T(max)[°C]	+200
Mounting dimensions
d_a(min.) [inch]	12.299
d_a(max.) [inch]	12.953
D_a(max.) [inch]	16.047
d_b(min.) [inch]	12.244
B_a(min.) [inch]	0.472
r_a(max.) [mm]	37.8
Calculation coefficient
e	0.2
Y₀	3.34
Y₁	3.42
Y₂	5.09

The 23960BK.MB.C4 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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23960BK.MB.C4 Double Row Spherical Roller Bearings, Main Dimensions To DIN 635-2

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