21308E1KC3 Double Row Spherical Roller Bearings

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21308E1KC3

Bore Diameter:40 mm

Outside Diameter:90 mm

Width:23 mm

Weight:0.702 kg

Min. Order:1 Piece

The 21308E1KC3 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 21308E1KC3 bearing is a Double row spherical roller bearings with an inner diameter of 40 mm , an outer diameter of 90 mm, a width of 23 mm. GCr15, GCr15SiMn, SUJ2 rings, GCr15, SUJ2 rolling mlement. Its dynamic radial rated load is approximately 108947 N, its static radial rated load is approximately 106949 N. It uses C3 standard radial clearance, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

40 mm

Outside Diameter:

90 mm

Thickness:

23 mm

Weight:

0.702 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

108947 N

Static load Capacity, Radial (Cor):

106949 N

Fatigue Load Limit, Radial:

14240 N

Reference speed (Grease rpm):

5193

Limiting speed (Oil rpm):

9491

Specifications:

Structure:

Spherical Roller Bearings

Number of Rows:

Radial Clearance Trade No.:

Bearing Material:

GCr15, GCr15SiMn, SUJ2

Cage Type:

JPA = Stamping steel cage

Rolling Mlement Material:

GCr15, SUJ2

Bore Type:

K = Tapered bore (K = taper 1:12)

Operating Temperature:

-30 to up +200 °C

System of Measurement:

Metric

Series:

213..-E1-K-C3

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

21308E1KC3 bearings ( 40 mm x 90 mm x 23 mm) have the advantages of Self-aligning, high load-bearing capacity, impact resistant, and adaptable to heavy loads, and are therefore widely used in the Gearboxes, drive shafts, conveying equipment, general machinery.

Part Number	21308E1KC3
Design Type	E1 = without central rip
Bore Type	K = Tapered bore (K = taper 1:12)
RIC	C3
Row	2
Bearing Type	Double row spherical roller bearings
Manufacturer Part Code	21308E1KC3
Original Code	21308-E1-K
Cage	JPA = Stamping steel cage
Measurement	Metric
d φ Inside [inch]	1.575
D Φ Outside [inch]	3.543
B Width [inch]	0.906
n_B Reference speed (grease) [min^–1]	5193
n_G Limiting speed (oil) [min^–1]	9491
Weight [kg]	0.702
r(min.) Chamfer [inch]	0.059
D₁ [inch]	3.181
d₂ [inch]	2.350
d_s [inch]	0.126
n_s [inch]	0.189
C_r Radial Dynamic [lbf]	24491
C_0r Radial static [lbf]	24042
C_ur Radial Fatigue [lbf]	3201
Temperature - T(min)[°C]	-30
Temperature - T(max)[°C]	up +200
Mounting dimensions
d_a(min.) [inch]	1.929
D_a(max.) [inch]	3.189
r_a(max.) [mm]	0.702
Calculation coefficient
e	0.24
Y₀	2.75
Y₁	2.81
Y₂	4.19

The 21308E1KC3 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 21308E1KC3 ( 0.702 kg Mass, ID: 40 mm OD: 90 mm WD: 23 mm , 213..-E1-K-C3 Series , 2 Rows , C3 Radial Clearance , GCr15, GCr15SiMn, SUJ2 Material , 108947 Radial dynamic , 106949 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. 21308E1KC3. 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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