241/1250-B-K30-MB-C4 Spherical Roller Bearings With Central Rib Tapered Bore (K30 = Taper 1:30)

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241/1250-B-K30-MB-C4

Bore Diameter:1250 mm

Outside Diameter:1950 mm

Width:710 mm

Weight:8000 kg

Min. Order:1 Piece

The 241/1250-B-K30-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 241/1250-B-K30-MB-C4 bearing is a Spherical roller bearings With central rib tapered bore (K30 = taper 1:30) with an inner diameter of 1250 mm , an outer diameter of 1950 mm, a width of 710 mm. GCr15, GCr15SiMn, SUJ2 rings, GCr15, SUJ2 rolling mlement. Its dynamic radial rated load is approximately 37499914 N, its static radial rated load is approximately 91499924 N. It uses C4 standard radial clearance, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

1250 mm

Outside Diameter:

1950 mm

Thickness:

710 mm

Weight:

8000 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

37499914 N

Static load Capacity, Radial (Cor):

91499924 N

Fatigue Load Limit, Radial:

5099918 N

Reference speed (Grease rpm):

Limiting speed (Oil rpm):

214

Specifications:

Old Designations:

241/1250BK30MBC4

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

Rolling Mlement Material:

GCr15, SUJ2

Bore Type:

K30 = Tapered bore (K30 = taper 1:30)

Operating Temperature:

-30 to +200 °C

System of Measurement:

Metric

Series:

241..-B-K30-MB-C4

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

241/1250-B-K30-MB-C4 bearings ( 1250 mm x 1950 mm x 710 mm) have the advantages of High load-bearing capacity, impact resistant, self-aligning, and easy to install, and are therefore widely used in the Wind turbine main shaft, large ship main shaft, giant construction machinery.

Part Number	241/1250-B-K30-MB-C4
Design drawing	2
Design Type	B = with fixed central rib
Bore Type	K30 = Tapered bore (K30 = taper 1:30)
RIC	C4
Row	2
Bearing Type	Spherical roller bearings With central rib tapered bore (K30 = taper 1:30)
Manufacturer Part Code	241/1250BK30MBC4
Cage	MB = Solid brass cage, guided on inner ring
Measurement	Metric
d φ Inside [inch]	49.213
D Φ Outside [inch]	76.772
B Width [inch]	27.953
n_B Reference speed (grease) [min^–1]	44
n_G Limiting speed (oil) [min^–1]	214
Weight [kg]	8000
r(min.) Chamfer [inch]	0.591
d_s [inch]	0.492
n_s [inch]	0.925
C_r Radial Dynamic [lbf]	8429980
C_0r Radial static [lbf]	20569182
C_ur Radial Fatigue [lbf]	1146461
Temperature - T(min)[°C]	-30
Temperature - T(max)[°C]	+200
Mounting dimensions
d_a(min.) [inch]	51.496
D_a(max.) [inch]	74.488
r_a(max.) [mm]	8000
Calculation coefficient
e	0.34
Y₀	1.94
Y₁	1.99
Y₂	2.96

The 241/1250-B-K30-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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241/1250-B-K30-MB-C4 Spherical Roller Bearings With Central Rib Tapered Bore (K30 = Taper 1:30)

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