21313-E1-XL-K-C4 Double Row Spherical Roller Bearings

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21313-E1-XL-K-C4

Bore Diameter:65 mm

Outside Diameter:140 mm

Width:33 mm

Weight:2.42 kg

Min. Order:1 Piece

The 21313-E1-XL-K-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 21313-E1-XL-K-C4 bearing is a Double row spherical roller bearings with an inner diameter of 65 mm , an outer diameter of 140 mm, a width of 33 mm. GCr15, GCr15SiMn, SUJ2 rings, GCr15, SUJ2 rolling mlement. Its dynamic radial rated load is approximately 248915 N, its static radial rated load is approximately 269912 N. It uses C4 standard radial clearance, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

65 mm

Outside Diameter:

140 mm

Thickness:

33 mm

Weight:

2.42 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

248915

Static load Capacity, Radial (Cor):

269912

Fatigue Load Limit, Radial:

33417

Reference speed (Grease rpm):

3612

Limiting speed (Oil rpm):

5035

Specifications:

Old Designations:

21313-E1-K-C4

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)

System of Measurement:

Metric

Series:

213..-E1-XL-K-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

21313-E1-XL-K-C4 bearings 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	21313-E1-XL-K-C4
Design Type	E1 = without central rip
Bore Type	K = Tapered bore (K = taper 1:12)
RIC	C4
X-Life	XL long life design
Row	2
Bearing Type	Double row spherical roller bearings
Manufacturer Part Code	21313-E1-K-C4
Original Code	21313-E1-K
Cage	JPA = Stamping steel cage
Measurement	Metric
d φ Inside [inch]	2.559
D Φ Outside [inch]	5.512
B Width [inch]	1.299
n_B Reference speed (grease) [min^–1]	3612
n_G Limiting speed (oil) [min^–1]	5035
Weight [kg]	2.42
r(min.) Chamfer [inch]	0.083
D₁ [inch]	4.992
d₂ [inch]	3.736
d_s [inch]	0.126
n_s [inch]	0.256
C_r Radial Dynamic [lbf]	55956
C_0r Radial static [lbf]	60676
C_ur Radial Fatigue [lbf]	7512
Temperature - T(min)[°C]	-30
Temperature - T(max)[°C]	up +200
Mounting dimensions
d_a(min.) [inch]	3.031
D_a(max.) [inch]	5.039
r_a(max.) [mm]	2.42
Calculation coefficient
e	0.22
Y₀	3.07
Y₁	3.14
Y₂	4.67

The 21313-E1-XL-K-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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