Description

Technical Parameters

Products Description

Mobile-Robot-Drive-Wheel-Bearing-Seals

The mobile robot drive wheel bearing seals are a seal installed around the mobile robot drive wheel bearing. Its main function is to prevent external pollutants such as dust, moisture, oil, etc. from entering the bearing, and at the same time prevent the lubricant inside the bearing from leaking out, to ensure the normal operation of the drive wheel bearing and extend its service life.

Core advantages

The multi-layer sealing structure effectively blocks tiny particles such as dust, water vapor, and oil from invading the bearing cavity, avoiding grease contamination or loss, and reducing bearing wear caused by lubrication failure.

It supports a wide temperature range operation from -40°C to +150°C, withstands high humidity, chemical corrosion (such as detergents, and industrial oil stains), and ultraviolet radiation, and is suitable for a variety of indoor and outdoor scenarios.

Optimized friction design, precise control of lip contact pressure, reduced rotational torque by 10%-15%, reduced motor energy consumption, and improved robot endurance.

Low friction characteristics also reduce heat accumulation and avoid aging of sealing materials due to temperature rise.

Mobile robot drive wheel bearing seals adopt ultra-thin structure (customizable thickness), adapted to miniaturized drive wheel design, and do not increase the overall load of the robot.

Structure and Materials

Structure: Robot drive wheel bearing seals usually consist of one or more sealing lips, which are in close contact with the shaft or housing of the bearing to form a sealed barrier. Common structures include single-lip seals, double-lip seals, etc. Some also have a skeleton to enhance the stability and durability of the seal.

Material: NBR rubber material has good oil resistance and wear resistance, and can adapt to certain temperature changes and mechanical vibrations.

NBR 70

Test Method

Norm

Test Values

Hardness

ISO 868 SB

70 ± 5 IRHD

Tensile Strength at break

ISO 37

13 N/mm²

Elongation at break

ISO 37

300%

Compression Set

70h/23°C

48h/70°C

48h/110°C

ISO 815 A

20%

15%

20%

Heat Ageing 48h/110°C

Hardness Change

ISO 188

+8%

Immersion in FAM DIN 51604 2/B

48h/23°C

Hardness Change

Volume Change

ISO 1817

-16%

+35%

Immersion in Diesel, 48h/23°C

Hardness Change

Volume Change

ISO 1817

-1%

+2%

Immersion in Biodiesel DIN 51606

48h/23°C

Hardness Change

Volume Change

ISO 1817

-3%

+3%

Selection Guide

1. Key Parameter Matching

Shaft diameter range: 3mm-150mm (supports non-standard size customization).
Pressure tolerance: normal pressure to 0.5MPa (special design can reach 2MPa).
Applicable bearings: deep groove ball bearings, tapered roller bearings, cross roller bearings, etc.

2. Installation Precautions

Use special fixtures to avoid lip flip damage, and the recommended surface roughness is Ra≤0.8μm.
Clean the shaft surface and apply grease before installation. Violent knocking is strictly prohibited.

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