POM Deep Groove Ball Bearings for Wet, Corrosive and Low-Noise Applications
POM acetal plastic bearings with PA66 nylon cage and glass balls for light-duty industrial equipment where corrosion resistance, low noise, electrical insulation and reduced maintenance are more important than heavy-load metal bearing capacity.
Corrosion-resistant smooth rotation for humid, water-contact and light-duty equipment.
Compact Technical Summary
A fast engineering view for RFQ screening before selecting exact bearing model, seal type and quantity.
Standard Metric Bearing Sizes
Our POM deep groove ball bearings follow common metric bearing dimensions, making them suitable for many replacement and custom equipment applications.
Standard POM Plastic Bearings
6000, 6200 and 6300 series — the most widely used metric bearing families for general light-duty applications.
Thin-Wall POM Bearings
6700, 6800 and 6900 series — compact cross-section designs for space-constrained rotating assemblies.
Miniature Plastic Ball Bearings
Small-size bearings for compact rotating mechanisms in instruments, toys, and precision devices.
Each model has fixed inner diameter, outer diameter and width dimensions. Standard sizes are available for sample orders, small trial purchases and bulk production.
Engineering Advantages in a Cleaner Format
Waterproof and Corrosion Resistant
POM bearings do not rust like iron-based bearings in humid, water-contact and mild chemical conditions.
Self-Lubricating Performance
Low-friction POM helps the bearing run smoothly without frequent grease maintenance in many light-duty applications.
Low Running Noise
POM rings and smooth glass balls reduce vibration and operating noise in small rotating assemblies.
Electrical Insulation
Useful where metal conductivity may create unwanted electrical contact in devices or instruments.
Lower Cost Than Stainless Steel
A practical alternative for low-load and corrosion-prone applications where stainless steel is not required.
Long-Lasting, More Durable
High fatigue resistance and resistance to creep help support consistent performance over extended operation.
Industrial Applications for International Buyers
These bearings are commonly used where moisture, mild corrosion, lower noise, light weight or electrical insulation are part of the design requirement. The cards below focus on application fit instead of using unrelated industry stock images.
Industrial machinery
Small conveyor rollers, guide wheels and light-duty rotating equipment.
Food machinery
Wet transmission parts where corrosion resistance and low maintenance are needed.
Chemical equipment
Light-duty chemical equipment exposed to humidity, weak alkali or weak acid conditions.
Medical equipment
Medical and laboratory rotating devices requiring low noise and electrical insulation.
Semiconductor equipment
Electronic testing instruments and clean rotating mechanisms where metal conductivity is not ideal.
High-temperature systems
Moderate-temperature systems up to 90°C where POM stability is suitable.
Additional applications from the original product information
These bearings are best suited for low-to-medium load and medium-to-low speed applications.
Performance Advantages vs Metal and Standard Plastic Bearings
- High rigidity, excellent recovery: POM material delivers mechanical strength up to 50.5 MPa, close to that of metal for its application class.
- Corrosion-resistant operation: Unlike carbon steel bearings, POM bearings do not rust in humid or wet environments.
- Low maintenance: The self-lubricating material helps reduce frequent grease maintenance in many light-duty assemblies.
- Stable rotation: Glass balls provide smooth movement and good wear resistance under low-to-medium speed conditions.
vs metal bearings
Reduces rust-related seizure, electrical conductivity and grease maintenance in water-contact environments.
vs standard plastic bearings
POM provides stronger rigidity, fatigue resistance and dimensional stability than many general plastics.
Simplified Bearing Structure
Open, Single Shield and Double Shield Options
Open Type POM Bearings
No shields on either side. Suitable for clean, enclosed equipment where outside lubrication or regular maintenance is available. Offers the lowest rotational resistance.
Single Shield POM Bearings
One protected side and one open side. Useful when one side needs dust protection while the other remains accessible for lubrication or maintenance.
Double Shield POM Bearings
Enclosed on both sides to help block dust, water mist and fine particles. Recommended for wet, humid, dusty or semi-outdoor working environments.
Advantages and Application Limits
✔ Advantages
Waterproof and corrosion resistant, self-lubricating, low running noise, electrical insulation, lower cost than stainless steel in suitable low-load applications, and improved reliability in light-duty wet equipment.
✖ Limitations
Not intended to replace heat-treated metal bearings in heavy-load or high-speed operating conditions. Excessive radial or axial load may cause deformation of the POM rings and faster wear.
Problems these bearings help solve
- Replace metal bearings that rust in water or humid environments
- Reduce bearing seizure caused by corrosion
- Avoid frequent grease lubrication and maintenance
- Lower noise in small rotating assemblies
- Add electrical insulation between rotating parts
- Reduce cost compared with full stainless steel bearing solutions
- Improve reliability in light-duty wet equipment
High rigidity and elastic recovery help the bearing rings maintain shape under light-to-medium load.
POM acetal plastic bearing material performs reliably in temperatures up to 90°C with high fatigue resistance.
POM Bearing Size Selection Table
Choose a bearing type, series and model to confirm the inner diameter, outer diameter and width. To keep this section compact, detailed size rows are not expanded by default. Select a category, series, model, or use quick search to display matching specifications.
Select a POM bearing category
Detailed model dimensions will appear after you select a type, series, model, or enter a search keyword.
Dimension unit: mm. Some miniature and thin-wall bearings may have multiple width options; please confirm required width, ball material, seal type and quantity when sending your RFQ.
| Type | Series | Model | Inner Dia. | Outer Dia. | Width | RFQ |
|---|
European Recreational Water Facility — Children’s Pedal Equipment Rollers
A European recreational water facility selected DISLAB PRECISION double-shielded 626 POM deep groove ball bearings for the rotating rollers used in children’s water amusement pedal equipment.
Before switching to POM bearings, the customer used 626 stainless steel bearings. Because the bearings were exposed to water mixed with a weak alkaline disinfectant solution, the metal bearings often rusted and seized within two to three months. This caused frequent equipment downtime and higher maintenance costs.
After sample testing, the customer placed a bulk order of 80,000 pieces of double-shielded 626 POM plastic bearings. After more than 11 months of field use, the bearings showed no rust-related failures. The customer reported a significant reduction in maintenance frequency and lower operating costs.
Global RFQ Support for Industrial Components
DISLAB PRECISION supplies industrial parts, fasteners, spacers, standoffs, plastic bearings and custom hardware solutions for global buyers. Our product range also includes PEEK deep-groove ball bearings, POM plastic pillow block bearings, PP plastic ball bearings, and bearing product range — all backed by our commitment to quality and precision.
We work with a qualified manufacturing network and support both sample orders and large-volume procurement. Every order is checked for material grade, dimensional accuracy, surface condition and packaging requirements before shipment.
We can also support OEM and ODM requirements, including custom materials, ball options, packaging, labeling and export documentation. If you need POM deep groove ball bearings, waterproof plastic bearings, double shield plastic ball bearings, or customized industrial components for your project — including solutions like our bearing failure prevention guide — contact DISLAB PRECISION to discuss your specifications and request a quote.
Frequently Asked Questions
What is the maximum load of a POM deep groove ball bearing?
POM deep groove ball bearings are designed for low-to-medium load and medium-to-low speed applications. They are not intended to replace heat-treated metal bearings in heavy-load or high-speed operating conditions. Excessive radial or axial load may cause deformation of the POM rings and faster wear of the rolling elements.
Can POM bearings replace stainless steel bearings?
Yes, in certain applications. POM bearings can replace stainless steel bearings in light-duty, wet, humid or corrosion-prone environments where rust resistance and low maintenance are more important than heavy-load capacity. For high-load or high-speed applications, stainless steel or other metal bearings may still be more suitable.
Can I choose ceramic balls or stainless steel balls instead of glass balls?
Yes. Glass balls are supplied as the standard option, but stainless steel balls and ceramic balls can be provided for customized orders. The best option depends on your working speed, load, environment and service life requirements.
Can these bearings run in hot water?
POM material can handle moderate working temperatures, but continuous operation near high-temperature limits may accelerate aging and deformation. For long-term use, we recommend keeping the working temperature below 75°C when possible. For constant high-temperature water applications, we can recommend alternative plastic bearing materials.
Do double shield POM bearings need grease before installation?
In many wet or light-duty applications, additional grease is not required because POM provides self-lubricating performance. For dusty or dry environments, a small amount of waterproof grease can help extend service life. Pre-greasing can be arranged before shipment if required.
Which seal type should I choose?
For clean indoor equipment, open type bearings offer the lowest rotational resistance. For semi-open environments with occasional dust exposure, single shield bearings are a practical option. For water contact, high humidity, dust or outdoor conditions, double shield POM bearings are usually the best choice.
What is the lead time for samples and bulk orders?
Standard POM bearing sizes are usually available for sample orders. Bulk order lead time depends on quantity, size range, customization requirements and packaging needs. Contact us with your model numbers and estimated quantity, and we will confirm availability and delivery time.
