Tapered Roller Bearings 31305-A

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Min. Order:

1 Piece

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Delivery time:

Stock

Technical Parameters:

Product Designations:

31305-A

Structure:

tapered roller bearing

Inside Diameter:

25 mm

Outside Diameter:

62 mm

Thickness:

18.25 mm

Weight:

0.297 KG

Precision Rating:

ABEC-5

Bearing Material:

Chrome Steel

Seals Type:

Open

Item:Tapered Roller Bearing 31305-A

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

Tapered roller bearings 31305-A
main dimensions to DIN ISO 355 / DIN 720, separable, adjusted or in pairs

25 mm

62 mm

18,25 mm

20 mm

17 mm

13 mm

C_{a min}

3 mm

C_{b min}

5 mm

D_{a max}

55 mm

D_{a min}

47 mm

D_{b min}

59 mm

d₁

46,3 mm

d_{a max}

34 mm

d_{b min}

32 mm

r_{1, 2 min}

1,5 mm

r_{3, 4 min}

1,5 mm

r_{a max}

1,5 mm

r_{b max}

1,5 mm

0,297 kg

Mass

C_r

37000 N

Basic dynamic load rating, radial

C_0r

38500 N

Basic static load rating, radial

0,83

0,73

Y₀

0,4

C_ur

4400 N

Fatigue limit load, radial

n_G

12000 1/min

Limiting speed

n_B

7200 1/min

Reference speed

T7FB025

Comparative designation to DIN ISO 355

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