28880/28820 Bearing

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28880/28820

Bore Diameter:247.65 mm

Outside Diameter:304.8 mm

Width:22.225 mm

The 28880/28820 bearing is a Tapered Roller Bearings with an inner diameter of 247.65 mm , an outer diameter of 304.8 mm, a width of 22.225 mm. It typically uses ABEC-5 grade precision tolerances and Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

247.65 mm

Outside Diameter:

304.8 mm

Thickness:

22.225 mm

Specifications:

Structure:

tapered roller bearing

Precision Rating:

ABEC-5

Bearing Material:

Chrome Steel

Seals Type:

Open

Transaction Information:

Payment term:

Delivery time:

Stock

Detailed description

Item: Tapered Roller Bearing

1)ISO 9001:2008 approved

2)long life and low noise

3)OEM service

4)stocks

Specifications

Material :GCr15/GCr15SiMn / G20Gr2Ni4A
Hardness :HRC60-HRC64
Closures :Unsealed/Sealed Grade : P5

Clearance :C0, C3, C4

Lubrication :Oil or grease
Features: These bearings are featured by the extremely big axial load carrying capacity and meanwhile they can also carry certain radial load

Packing :
1. For small ones: Anti-rust oil+ plastic bag+ paper box+ wooden box
2. For big ones: Anti-rust oil+ waterproof belt+ professional belt +wooden box
Application :Steel industry, oil industry, cement industry, mining & construction, papermaking machinery, rolling mill, sugar mill, vibrating screens, conveyors, air blower, transmissions, and other heavy machinery

C₁	146000
e	0.32
Y	1.85
C₉₀	37800
C_a90	21000
K	1.8
C₀	373000
B	22.225
C	15.875
a⁽³⁾	17.3
Shaft max shaft fillet radius R⁽⁴⁾	1.5
Shaft backing shoulder dia.d_a	256
Shaft backing shoulder dia.d_b	258
Housing backing shoulder dia. r⁽⁴⁾	1.5
Housing backing shoulder dia.D_a	294
Housing backing shoulder dia.D_a	291
Cage A_a	1.7
Cage A_b	1.9
G1	807
G2	572
C_g	0.1479
(kg)	3.18

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