POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm
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POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mmPOM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm

POM Plastic Bearing Double Seal Glass Ball Thin-walled Bearings ID 10/12/17-40mm

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$7.21 USD
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In stock (500 units), ready to be shipped

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Description

POM Plastic Thin-Walled Bearings — Lightweight, Corrosion-Resistant Double Seal Design

When standard steel bearings corrode, seize, or add unwanted weight to a precision assembly, engineers and DIY builders alike turn to POM plastic thin-walled bearings with glass balls. These bearings are engineered for applications where chemical exposure, moisture, or weight constraints make metal bearings impractical — from food-processing jigs and laboratory equipment to RC models, 3D printer carriages, and custom automation fixtures.

Each bearing consists of a POM (polyoxymethylene acetal) inner and outer ring paired with precision glass balls and a double-seal (2RS) configuration that keeps contaminants out without requiring external lubrication. Available across three series — 6800, 6900, and 6200 — with inner diameters ranging from 10 mm (0.39 in) to 40 mm (1.57 in) and outer diameters from 19 mm (0.75 in) to 80 mm (3.15 in). Wall thickness (THK) ranges from 5 mm to 18 mm depending on the selected size.

Typical use cases for these POM plastic thin-walled bearings include low-load rotary joints in corrosive environments, lightweight spindle assemblies in hobby CNC machines, non-magnetic bearing positions in medical or electronic devices, and replacement bearings in food-safe conveyor systems where metal contamination must be avoided.

⚙️ Compatibility Note: These bearings follow standard metric bore dimensions (6800, 6900, and 6200 series). Verify your housing bore and shaft diameter against the selected size option before ordering. POM material is suitable for dry or lightly lubricated, low-to-medium speed applications; not recommended for sustained high-temperature (above 80 °C / 176 °F) or heavy radial-load environments.

✅ Key Features of These POM Plastic Thin-Walled Bearings

🧪POM Acetal Ring Material
Inner and outer rings are machined from POM (polyoxymethylene), offering inherent resistance to moisture, mild acids, alkalis, and many solvents — extending service life in environments that corrode steel bearings.
🔵Precision Glass Rolling Elements
Glass balls provide non-magnetic, non-conductive, and corrosion-proof rolling contact. Suitable for applications requiring electrical isolation or where metal particle contamination is unacceptable.
🛡️Double Rubber Seal (2RS)
Both sides are sealed with flexible rubber contact seals that block dust, debris, and moisture ingress, reducing maintenance intervals and protecting the glass ball complement in dirty or wet environments.
📏Thin-Walled, Space-Saving Profile
The 6800 and 6900 series feature a reduced cross-section (THK 5–9 mm) relative to bore size, making them ideal for compact assemblies where radial space is limited — such as slim robotic joints or miniature spindles.
⚖️Lightweight Construction
POM density is approximately 1.41 g/cm³ — significantly lighter than steel — reducing rotating mass and inertia in weight-sensitive designs such as drone gimbals, RC vehicles, and portable instruments.
📦Multi-Quantity Packs Available
Select from 1, 2, 4, 10, 15, 20, or 25 pieces per order to match project scale — from single-unit prototyping to small-batch production runs — with per-unit cost decreasing at higher quantities.

📐 Technical Specifications — POM Plastic Thin-Walled Ball Bearings

Bearing Series 6800, 6900, 6200 (metric, thin-walled)
Inner Diameter (ID) 10 mm – 40 mm (0.39 in – 1.57 in); see variant options
Outer Diameter (OD) 19 mm – 80 mm (0.75 in – 3.15 in); see variant options
Thickness (THK) 5 mm – 18 mm; see variant options
Ring Material POM (Polyoxymethylene / Acetal)
Rolling Element Material Glass balls
Seal Type Double rubber contact seal (2RS, both sides)
Lubrication Dry / light grease compatible; no pre-lubrication required
Max Operating Temperature Typically up to 80 °C (176 °F)
Load Type Radial; low-to-medium load applications
Magnetic Properties Non-magnetic
Electrical Properties Non-conductive (glass balls + POM rings)
Available Quantities 1, 2, 4, 10, 15, 20, 25 pcs per order
Weight per Unit See variant options (varies by size)

❓ Frequently Asked Questions

How do I choose the correct bearing size for my application?

Match the bearing's inner diameter (ID) to your shaft diameter and the outer diameter (OD) to your housing bore. The size option label follows the format: Series-ID*OD*THK (e.g., 6802-2RS-15*24*5 means ID 15 mm, OD 24 mm, thickness 5 mm). Measure your shaft and housing with calipers before selecting. If your shaft is between standard sizes, choose the next smaller ID and adjust the housing accordingly.

What load capacity can these POM plastic bearings handle?

POM plastic bearings with glass balls are designed for low-to-medium radial loads in applications where weight, corrosion resistance, or non-conductivity is the primary requirement. They are not suitable for heavy radial or axial shock loads. Typical applications include 3D printer axes, RC vehicle wheels, laboratory instruments, and light conveyor rollers. For heavy-duty industrial loads, steel bearings are more appropriate.

Are these bearings corrosion-resistant and suitable for wet environments?

Yes. POM (acetal) rings resist moisture, mild acids, alkalis, and many common solvents. The glass balls are fully corrosion-proof. The 2RS double seal further protects the interior from water ingress. These bearings are well-suited for humid environments, light washdown conditions, and applications where rust from steel bearings would be a contamination risk — such as food-processing fixtures or outdoor equipment.

What is the difference between the 6800, 6900, and 6200 series?

All three are metric deep-groove ball bearing series, but they differ in cross-section dimensions relative to bore size. The 6800 series has the thinnest cross-section (smallest OD and THK for a given ID), making it ideal for the most space-constrained designs. The 6900 series has a slightly larger cross-section, offering a balance between compactness and load capacity. The 6200 series has the largest cross-section of the three, providing greater load capacity and rigidity. Choose based on your available radial and axial space and the load your application requires.

Can I use these bearings in high-temperature environments?

POM has a continuous service temperature limit of approximately 80 °C (176 °F). Sustained exposure above this threshold can cause dimensional changes and reduced mechanical strength in the rings. For applications involving elevated temperatures — such as near motors, ovens, or steam — consider alternative materials. These bearings perform reliably at room temperature and in moderately warm environments up to the stated limit.

How do I decide how many pieces to order?

Select the quantity that matches your immediate project needs plus a reasonable spare allowance. Single-piece (1 pc) orders are suitable for prototyping or one-off repairs. Packs of 4 or 10 are practical for small assemblies with multiple bearing positions. Packs of 15, 20, or 25 offer a lower per-unit cost and are recommended for small-batch production, maintenance stock, or multi-axis machines. The per-unit price decreases as quantity increases, so ordering a larger pack upfront is often more economical if you anticipate future use.

🛒 Select your size and quantity above, then add to cart.

 

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