240/670 BC Spherical Roller Bearings, Machined Metal

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240/670 BC

Bore Diameter:670 mm

Outside Diameter:980 mm

Width:308 mm

Weight:790 kg

Min. Order:1 Piece

The 240/670 BC 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 240/670 BC bearing is a Spherical roller bearings, double row with an inner diameter of 670 mm , an outer diameter of 980 mm, a width of 308 mm. High-carbon chromium steel rings, High-carbon chromium steel rolling mlement. Its dynamic radial rated load is approximately 10390442 N, its static radial rated load is approximately 19979777 N. It uses CN standard radial clearance, Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

670 mm

Outside Diameter:

980 mm

Thickness:

308 mm

Weight:

790 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

10390442 N

Static load Capacity, Radial (Cor):

19979777 N

Reference speed (Grease rpm):

Limiting speed (Oil rpm):

Specifications:

Old Designations:

240/670BC

Structure:

Spherical Roller Bearings

Number of Rows:

Radial Clearance Trade No.:

Bearing Material:

High-carbon chromium steel

Cage Type:

Machined metal

Seals Type:

Open

Rolling Mlement Material:

High-carbon chromium steel

Bore Type:

Z = cylindrical bore

Operating Temperature:

-30 to +200 °C

System of Measurement:

Metric

Series:

240..-BC

Rolling Element:

spherical 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

240/670 BC bearings ( 670 mm x 980 mm x 308 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	240/670 BC
Manufacturer Part Code	240/670BC
Bearing Type	Spherical roller bearings, double row
m Weight [lb]	1741.634
Seal type	Open
Series	240..-BC
Cage	Machined metal
Lubrication	None
Bore Type	Z = cylindrical bore
Radial internal clearance	CN
Units	Metric
C_r Dynamic Radial [lbf]	2335771
C_0r Static Radial [lbf]	4491453
P_u Fatigue Radial [lbf]	285296
Operating temperature - T(min) [°C]	-30
Operating temperature - T(max) [°C]	+200
n_B Speed ratings (grease) [rpm]	19
n_G Speed ratings (oil) [rpm]	41
Heat stabilization	392 °F (200 °C)
Dimension
d φ Inside [inch]	26.378
D Φ Outside [inch]	38.583
B Width [inch]	12.126
b [inch]	2.488
K [inch]	0.591
d₂ [inch]	30.000
D₁ [inch]	34.606
r_a(max.) Fillet [inch]	0.236
r₁,r₂(min.) Fillet [inch]	0.295
Angular misalignment	2 degrees
Abutment dimensions
d_a(min.) [inch]	27.480
D_a(max.) [inch]	37.480
Calculation factor
e	0.3
Y₁	2.3
Y₂	3.4
Y₀	2.2

The 240/670 BC 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 240/670 BC ( 790 kg Mass, ID: 670 mm OD: 980 mm WD: 308 mm , 240..-BC Series , 2 Rows , CN Radial Clearance , High-carbon chromium steel Material , 10390442 Radial dynamic , 19979777 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. 240/670 BC. 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.

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