21307-E1-TVPB-C3 Double Row Spherical Roller Bearings

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21307-E1-TVPB-C3

Bore Diameter:35 mm

Outside Diameter:80 mm

Width:21 mm

Weight:0.497 kg

Min. Order:1 Piece

The 21307-E1-TVPB-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 21307-E1-TVPB-C3 bearing is a Double row spherical roller bearings with an inner diameter of 35 mm , an outer diameter of 80 mm, a width of 21 mm. GCr15, GCr15SiMn, SUJ2 rings, GCr15, SUJ2 rolling mlement. Its dynamic radial rated load is approximately 82805 N, its static radial rated load is approximately 73819 N. It uses C3 standard radial clearance, OPEN type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

35 mm

Outside Diameter:

80 mm

Thickness:

21 mm

Weight:

0.497 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

82805

Static load Capacity, Radial (Cor):

73819

Fatigue Load Limit, Radial:

8233

Reference speed (Grease rpm):

6774

Limiting speed (Oil rpm):

10871

Specifications:

Structure:

Spherical Roller Bearings

Number of Rows:

Radial Clearance Trade No.:

Bearing Material:

GCr15, GCr15SiMn, SUJ2

Cage Type:

TVPB = Plastic cage, guided on inner ring

Seals Type:

OPEN

Rolling Mlement Material:

GCr15, SUJ2

Bore Type:

Z = Cylindrical bore

System of Measurement:

Metric

Series:

213..-E1-XL-TVPB-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

21307-E1-TVPB-C3 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	21307-E1-TVPB-C3
Design Type	E1 = without central rip
Bore Type	Z = Cylindrical bore
RIC	C3
X-Life	XL long life design
Row	2
Bearing Type	Double row spherical roller bearings
Manufacturer Part Code	21307-E1-TVPB-C3
Equivalent	21307-E1-TVPB-C3 , 21307E1TVPB.C3
Original Code	21307-E1-TVPB-C3
Cage	TVPB = Plastic cage, guided on inner ring
Measurement	Metric
Seal type	OPEN
d φ Inside [inch]	1.378
D Φ Outside [inch]	3.150
B Width [inch]	0.827
n_B Reference speed (grease) [min^–1]	6774
n_G Limiting speed (oil) [min^–1]	10871
Weight [kg]	0.497
r(min.) Chamfer [inch]	0.059
D₁ [inch]	2.622
d₂ [inch]	1.866
C_r Radial Dynamic [lbf]	18614
C_0r Radial static [lbf]	16594
C_ur Radial Fatigue [lbf]	1850
Mounting dimensions
d_a(min.) [inch]	1.732
D_a(max.) [inch]	2.795
r_a(max.) [mm]	0.497
Calculation coefficient
e	0.26
Y₀	2.5
Y₁	2.55
Y₂	3.8

The 21307-E1-TVPB-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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