NTN 4T-30311 Bearings

Model No : 4T-30311
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NTN 4T-30311 Bearing | Tapered roller bearings 4T-30311

Bearing 4T-30311

Bearing number : 4T-30311

Size (mm) : 55x120x31.5

Brand : NTN

Bore Diameter (mm) : 55

Outer Diameter (mm) : 120

Width (mm) : 31,5

Bearing dimensions and specification in NTN catalogue:

d - 55 mm

D - 120 mm

T - 31,5 mm

B - 29 mm

C - 25 mm

ra1 max. - 2 mm

a - 24,5 mm

r min. - 2,5 mm

r1 min. - 2 mm

da min. - 67 mm

Da min - 104 mm

Da max. - 110 mm

db max. - 71 mm

Db min. - 111 mm

ra max. - 2 mm

Sa - 4 mm

Sb - 6,5 mm

Weight - 1,66 Kg

Basic dynamic load rating (C) - 155 kN

Basic static load rating (C0) - 179 kN

(Grease) Lubrication Speed - 3 300 r/min

(Oil) Lubrication Speed - 4 400 r/min

Calculation factor (e) - 0,35

Calculation factor (Y0) - 0,96

Calculation factor (Y2) - 1,74

Tags :  NTN , 55x120x31.5

Tapered roller bearings 4T-30311 NTN 4T-30311 Professional Supplier Information

We are a manufacturer and supplier specializing in research, development and production of Tapered roller bearings 4T-30311 NTN 4T-30311 bearings.

The company's core bearings are Tapered roller bearings 4T-30311 NTN 4T-30311, and deep groove ball bearings, self-aligning ball bearings, self-aligning roller bearings, wheel bearings, linear bearings, bearing blocks, ceramic bearings, plastic bearings and other bearings, cylindrical roller bearings , Angular contact ball bearings, tapered roller bearings, thrust ball bearings, thrust roller bearings and needle roller bearings and other spherical plain bearings and other fine bearings.

Our Tapered roller bearings 4T-30311 NTN 4T-30311 bearings and other bearings are 100% compliant with the international quality standard ISO 9001 and are highly appreciated in various markets around the world.

How does Tapered roller bearings 4T-30311 NTN 4T-30311 work for you for a long time?

  • The installation is correct, affect the accuracy, life, performance. After installation, fill the bearing with lubricant.
  • Do not let hammer, transfer roller pressure and other strong impact
  • Use precise installation tools to avoid the use of fabrics and staple fibers
  • Lubricate the bearings to avoid rusting of high quality mineral oils, especially in summer
  • General inspection, such as ambient temperature, vibration, noise check
  • Keep the bearings clean from dust, contaminants, and moisture.
  • Bearings can not be ultra-cold.

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