6800ZZ Shielded Ball Bearing – 10×19×5mm

684ZZ Shielded Ball Bearing – 4×9×4mm

£1.19
Skip to product information
6800ZZ Shielded Ball Bearing – 10×19×5mm
  • 6800ZZ Shielded Ball Bearing – 10×19×5mm
  • 6800ZZ Shielded Ball Bearing – 10×19×5mm
  • 6800ZZ Shielded Ball Bearing – 10×19×5mm
  • 6800ZZ Shielded Ball Bearing – 10×19×5mm
684ZZ Shielded Ball Bearing – 4×9×4mm

684ZZ Shielded Ball Bearing – 4×9×4mm

£1.19
Taxes included. Shipping calculated at checkout.
In stock
Description

684ZZ Shielded Ball Bearing

Single-row deep groove ball bearing. Chrome steel, ZZ metal shields.

  • Bore × OD × Width: 4×9×4mm
  • Type: ZZ metal shields (2×)
  • Material: Chrome steel (GCr15)
  • Pack: Single bearing (1)
Shipping

At Pivot Bearings, we strive for speed and reliability. Orders are typically processed within 1-2 business days and shipped via Royal Mail, with an estimated delivery time of 2-3 business days. You will receive a confirmation email with a tracking number as soon as your order is dispatched. Please note that shipping excludes weekends and UK Bank Holidays, and customers are responsible for any applicable customs duties or taxes on international orders.

See more here
Return policy

We offer a 30-day return policy on all unused items in their original packaging. To initiate a return, please contact us at info@pivotbearings.co.uk for approval and instructions. Please note that customers are responsible for arranging and paying for return shipping; Pivot Bearings cannot be held responsible for return shipments that are lost or fail to deliver. Once your item is received and inspected, refunds are typically processed within 10 business days.

See more here
Reviews

Need custom sizes?

Contact us now

Technical Details

Brand Pivot Bearings
Bearing Type Deep Groove Ball Bearing
Bearing Structure Single Row
Main Body Material Chrome Steel 52100 (Gcr15)
Ring Material Chrome Steel 52100 (Gcr15)
Cage Material 300 Series Stainless Steel
Ball Material Chrome Steel 52100 (Gcr15)
Shields Material 300 Series Stainless Steel
Bore Diameter (d) 4.0 mm
Outer Diameter (D) 9.0 mm
Width (B) 4.0 mm
Bore Diameter (d) 14/89 in
Outer Diameter (D) 28/79 in
Width (B) 14/89 in
Compliance ISO9001:2015, REACH, ROHS
Ball Quantity 8
Ball Size 1.0 mm
Dynamic Load Rating (Cr) 264 N
Static Load Rating (Cor) 90 N

Additional Information

SKU BR-684ZZ
Date First Available 08 Jul 2026

Dimensional Drawing

d = 4.0 mm D = 9.0 mm B = 4.0 mm

684ZZ Shielded Ball Bearing – 4×9×4mm FAQ 's

Frequently asked questions about the 684ZZ Shielded Ball Bearing – 4×9×4mm

What does the "ZZ" suffix actually stand for?

The ZZ (or 2Z) designation indicates that the bearing is equipped with metal shields on both sides. These shields are typically made of pressed steel and are fixed to the outer ring. Unlike "Open" bearings, ZZ bearings have a physical barrier that prevents large debris from entering the raceway and helps retain the factory-applied grease.
How do ZZ bearings differ from 2RS bearings?

The main difference lies in the sealing method and friction levels:

  • ZZ (Metal Shields): These are non-contact shields. Because they do not touch the inner ring, they generate almost no additional friction, making them ideal for high-speed applications.
  • 2RS (Rubber Seals): These are contact seals. They press against the inner ring, providing a much tighter seal against moisture and fine dust, but they create more friction and heat, which limits their maximum speed.
Are ZZ bearings waterproof?

No. ZZ bearings are designed to protect against dust and larger solid particles, but they are not watertight. Because the metal shields do not make physical contact with the inner ring, there is a tiny "labyrinth" gap through which liquids (like water or oil) and very fine vapors can pass. For washdown environments or underwater use, you should typically use 2RS (rubber-sealed) bearings.
What are the best applications for ZZ bearings?

Due to their low friction and high-speed capability, ZZ bearings are the standard choice for:

  • Electric Motors: Where high RPMs and low heat generation are critical.
  • Office Equipment: Such as printers and photocopiers.
  • Power Tools: Like drills and grinders.
  • Home Appliances: Washing machines, vacuum cleaners, and fans.
  • Clean Environments: Where there is moderate dust but no risk of liquid splashing.
Do I need to lubricate a ZZ bearing?

In most cases, no. ZZ bearings are almost always "Lubricated for Life." They come pre-filled with high-quality grease at the factory, and the shields are designed to keep that grease inside. Because the shields are not easily removable without damaging them, these bearings are generally considered maintenance-free and should be replaced rather than relubricated once the grease expires or the bearing becomes noisy.

Shop The Full Collection

129 Self-Aligning Ball Bearing – 9×26×8mm

108 Self-Aligning Ball Bearing – 8×22×7mm

108 Self-Aligning Ball Bearing – 8×22×7mm
£2.82
129 Self-Aligning Ball Bearing – 9×26×8mm

1200 Self-Aligning Ball Bearing – 10×30×9mm

1200 Self-Aligning Ball Bearing – 10×30×9mm
£3.08
129 Self-Aligning Ball Bearing – 9×26×8mm

1201 Self-Aligning Ball Bearing – 12×32×10mm

1201 Self-Aligning Ball Bearing – 12×32×10mm
£3.36
129 Self-Aligning Ball Bearing – 9×26×8mm

1202 Self-Aligning Ball Bearing – 15×35×11mm

1202 Self-Aligning Ball Bearing – 15×35×11mm
£4.03

Search the Range

Stop searching and start spinning. With our wide range of high-quality bearings, the perfect part is always in stock.

Service With a Smile

Have a tricky mechanical question? We love a challenge! Reach out to our team for personalized, expert guidance.

Ready for Everywhere

From local workshops to international industrial sites, Pivot Bearings supports customers across the globe.