21305 CC/C3 Spherical Roller Bearings, Stamped Steel Cages

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21305 CC/C3

Bore Diameter:25 mm

Outside Diameter:62 mm

Width:17 mm

Weight:0.28 kg

Min. Order:1 Piece

The 21305 CC/C3 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 21305 CC/C3 bearing is a Spherical roller bearings, double row with an inner diameter of 25 mm , an outer diameter of 62 mm, a width of 17 mm. High-carbon chromium steel rings, High-carbon chromium steel rolling mlement. Its dynamic radial rated load is approximately 48980 N, its static radial rated load is approximately 41438 N. It uses C3 standard radial clearance, open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

25 mm

Outside Diameter:

62 mm

Thickness:

17 mm

Weight:

0.28 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

48980 N

Static load Capacity, Radial (Cor):

41438 N

Reference speed (Grease rpm):

9265

Limiting speed (Oil rpm):

11972

Specifications:

Old Designations:

21305CC/C3

Structure:

Spherical Roller Bearings

Number of Rows:

Radial Clearance Trade No.:

Bearing Material:

High-carbon chromium steel

Cage Type:

CC = stamped steel cages

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:

213..-CC

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

21305 CC/C3 bearings ( 25 mm x 62 mm x 17 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	21305 CC/C3
Manufacturer Part Code	21305CC/C3
Internal design	CC = Flangeless inner ring, guide ring centred on the inner ring, two stamped steel cages
Bearing Type	Spherical roller bearings, double row
m Weight [lb]	0.617
Seal type	open
Series	213..-CC
Cage	CC = stamped steel cages
Bore Type	Z = cylindrical bore
Radial internal clearance	C3
Units	Metric
C_r Dynamic Radial [lbf]	11010
C_0r Static Radial [lbf]	9315
P_u Fatigue Radial [lbf]	1009
Operating temperature - T(min) [°C]	-30
Operating temperature - T(max) [°C]	+200
n_B Speed ratings (grease) [rpm]	9265
n_G Speed ratings (oil) [rpm]	11972
Heat stabilization	392 °F (200 °C)
Dimension
d φ Inside [inch]	0.984
D Φ Outside [inch]	2.441
B Width [inch]	0.669
d₂ [inch]	1.406
D₁ [inch]	1.996
r_a(max.) Fillet [inch]	0.039
r₁,r₂(min.) Fillet [inch]	0.043
Angular misalignment	1 degree
Abutment dimensions
d_a(min.) [inch]	1.260
D_a(max.) [inch]	2.165
Calculation factor
e	0.3
Y₁	2.3
Y₂	3.4
Y₀	2.2

The 21305 CC/C3 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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