Characteristics of non-standard bearings for agricultural machinery

Non standard bearings for agricultural machinery are customized bearings designed specifically for special working conditions of agricultural machinery. Their characteristics are closely related to the complex working environment and usage needs of agricultural machinery. The following are its core characteristics:

1. Customized structural design

Non standard size and shape:

Adapting to the compact installation space of agricultural machinery, such as the threshing drum of harvesters, seeders, etc., non-standard inner diameters, outer diameters, or widths may be used, and even irregular outer rings (such as those with mounting holes and flange edges) may be used.

Integrated functions:

Some bearings are integrated with seals, lubrication channels, or sensor interfaces to reduce the number of parts in the entire machine, such as maintenance free bearings with oil injection holes.

2. Weather resistance and corrosion resistance

Material upgrade:

Using stainless steel (such as 304, 316L) or surface coating (zinc, nickel) treatment to resist corrosive media such as soil, fertilizers, pesticides, etc.

Special coating:

Apply ceramic spraying or polymer coating to reduce adhesion and wear during wet tillage operations.

3. High load-bearing capacity and impact resistance

Roller optimization:

Increase the roller diameter or use logarithmic profile rollers to enhance radial load-bearing capacity and adapt to heavy-duty components such as tractor gearboxes and rotary tiller shafts.

Reinforcement of retaining frame:

Use engineering plastic or bronze cages to enhance impact resistance and prevent cage breakage during high-speed operation or frequent start stop.

4. Sealing and dustproof design

Multi layer sealing system:

Adopting a labyrinth and contact double seal to prevent straw debris, dust, and moisture from entering, such as the cutter bearings of a combine harvester.

Self sealing structure:

Using the centrifugal force of bearing rotation to throw lubricant onto the sealing lip, forming a dynamic barrier and extending the lubrication cycle.

5. Long term lubrication and maintenance free

Lubricating grease adaptation:

Choose composite lithium based grease or polyurea grease that is heat-resistant and water-resistant, suitable for working environments with a wide temperature range of -30 ℃ to 150 ℃.

Oil storage structure

Design oil storage tanks or lubrication channels to support multi season use with a single grease injection, reducing the frequency of field maintenance.

6. Adapt to complex working conditions

Vibration and Bias Load Tolerance:

By optimizing the curvature of the raceway or adopting a self-aligning design, early failures caused by agricultural machinery bumps or installation errors can be reduced.

Anti pollution ability:

Open bearings may be equipped with detachable dust covers for easy cleaning and adaptability to dusty environments.

7. Balance cost-effectiveness and reliability

Modular design:

By optimizing key components through finite element analysis, the lifespan can be improved under the premise of controllable cost, such as the transplanting arm bearings of rice transplanters.

Failure warning:

Integrate temperature sensors or vibration monitoring interfaces to achieve predictive maintenance and avoid downtime losses.

Typical application scenarios

Transplanter: The transplanting arm bearing needs to withstand high-frequency vibration and lateral force, and adopts a special raceway design to prevent derailment.

Spray: the transmission system bearing shall be protected against chemical corrosion and sealed with fluororubber.

Silage machine: The cutting blade shaft bearing needs to be resistant to entanglement and designed with a smooth surface to reduce straw adhesion.

Non standard bearings for agricultural machinery, through deep customization, balance performance and cost under extreme working conditions, becoming a key support for the efficient operation of modern agricultural machinery.