Name: 683ZZ Shielded Ball Bearing – 3×7×3mm
Brand: Pivot Bearings
SKU: BR-683ZZ
Price: 1.19 GBP
Availability: InStock

683ZZ Shielded Ball Bearing – 3×7×3mm

£1.19

683ZZ Shielded Ball Bearing – 3×7×3mm

£1.19

Taxes included. Shipping calculated at checkout.

In stock

683ZZ Shielded Ball Bearing

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

Bore × OD × Width: 3×7×3mm
Type: ZZ metal shields (2×)
Material: Chrome steel (GCr15)
Pack: Single bearing (1)

Orders are dispatched within 1-2 working days from Mirfield, West Yorkshire. UK orders go by Royal Mail tracked delivery and usually arrive 3-5 working days after you order, from £3.99. International delivery is tracked and priced by weight; for most countries any import duty is shown at checkout, so there is nothing to pay on delivery. You'll get a tracking link by email when your order ships.

Delivery prices and times for every country

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. Unless the item is faulty or wrong, customers arrange and pay 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.

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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)	3.0 mm
Outer Diameter (D)	7.0 mm
Width (B)	3.0 mm
Bore Diameter (d)	11/93 in
Outer Diameter (D)	27/98 in
Width (B)	11/93 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-683ZZ
Date First Available	08 Jul 2026

Dimensional Drawing

683ZZ Shielded Ball Bearing – 3×7×3mm FAQ 's

Frequently asked questions about the 683ZZ Shielded Ball Bearing – 3×7×3mm

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.

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.

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.

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.

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.