686HZZ EZO 6x13x5 mm - Stainless Steel Miniature Deep Groove Ball Bearing

686HZZ EZO 6x13x5 mm - Stainless Steel Miniature Deep Groove Ball Bearing

EZO 686HZZ is a miniature stainless steel deep groove ball bearing with dimensions 6x13x5 mm, fitted with metal shields on both sides. The H designation identifies the stainless steel version in this EZO bearing series, while ZZ indicates metal shields on both sides. The bearing combines the compact dimensions of the 686 series with improved corrosion resistance.

Technical data

EZO 686HZZ dimensions

The basic dimensions are:

d: 6 mm
D: 13 mm
B: 5 mm

Complete dimensional specification:

6x13x5 mm

The compact dimensions make 686HZZ suitable for small mechanisms where available installation space is limited.

What does 686HZZ mean?

The complete 686HZZ designation is important for correct bearing identification.

686 - miniature deep groove ball bearing size with dimensions 6x13x5 mm.

H - identifies the stainless steel version in this EZO series.

ZZ - metal shields on both sides of the bearing.

The H suffix should not be omitted when selecting a replacement because it identifies the material version of the bearing.

EZO 686HZZ construction

EZO 686HZZ is a single-row deep groove ball bearing. Its basic construction consists of:

• inner ring,
• outer ring,
• balls,
• cage,
• two metal shields.

The deep raceways are designed primarily to accommodate radial loads. Deep groove ball bearings can also accommodate axial loads within the operating limits of the specific bearing arrangement.

Stainless steel H version

An important feature of 686HZZ is its stainless steel construction.

Compared with conventional bearing steel, stainless steel provides improved corrosion resistance, which can be advantageous in environments exposed to moisture.

Stainless steel does not provide universal resistance to every chemical or corrosive environment. Suitability should therefore be evaluated according to the actual operating conditions.

What does ZZ mean?

ZZ indicates metal shields on both sides of the bearing.

The shields help to:

• reduce the ingress of contaminants,
• protect the raceways and rolling elements,
• retain lubricant inside the bearing,
• maintain low running friction.

ZZ metal shields should not be confused with elastomer seals such as 2RS.

686HZZ vs 686ZZ

Both versions have the same basic dimensions:

6x13x5 mm

686HZZ - stainless steel EZO version with metal shields on both sides.

686ZZ - standard 686 version with ZZ metal shields.

If stainless steel construction is required, the H designation is an important part of the complete bearing reference.

686HZZ vs 686H 2RS

For the same basic bearing size, the principal difference concerns the closure system.

686HZZ uses metal shields on both sides.

A 2RS version, where specified, uses seals on both sides. ZZ and 2RS versions should not automatically be considered equivalent because the closure design affects contamination protection and operating characteristics.

Selection and interchangeability

When selecting EZO 686HZZ, verify:

• complete 686HZZ designation,
• 6 mm bore diameter,
• 13 mm outside diameter,
• 5 mm width,
• stainless steel H version,
• ZZ metal shields,
• required load capacity,
• operating speed,
• operating environment,
• lubrication requirements,
• shaft and housing tolerances.

Matching dimensions of 6x13x5 mm alone do not confirm complete technical interchangeability.

Applications

Miniature stainless steel EZO bearings are suitable for compact precision mechanisms where limited installation space is combined with a requirement for improved corrosion resistance.

The suitability of 686HZZ for a specific application should be determined according to actual loads, operating speed, environmental conditions and the requirements of the complete bearing arrangement.

Installation

Due to its miniature dimensions, EZO 686HZZ should be handled carefully during installation.

When fitting the bearing onto a shaft, mounting force should be applied to the inner ring. When pressing the bearing into a housing, force should be applied to the outer ring.

Mounting force should not be transmitted through the balls, and direct pressure on the ZZ metal shields should be avoided.

Alternative designations and search references

• EZO 686HZZ
• 686HZZ EZO
• 686 H ZZ EZO
• EZO 686 H ZZ
• 686HZZ 6x13x5
• EZO 686HZZ 6x13x5
• 686 H ZZ 6x13x5
• 686 stainless bearing
• stainless steel bearing 6x13x5
• miniature stainless bearing 6x13x5

FAQ - EZO 686HZZ

What are the dimensions of EZO 686HZZ?

The bearing measures 6x13x5 mm, with a 6 mm bore, 13 mm outside diameter and 5 mm width.

What type of bearing is EZO 686HZZ?

It is a single-row miniature deep groove ball bearing.

Is EZO 686HZZ made of stainless steel?

Yes. The H designation identifies the stainless steel version in this EZO bearing series.

What does ZZ mean?

ZZ indicates metal shields on both sides of the bearing.

Is EZO 686HZZ an open bearing?

No. It is fitted with metal shields on both sides.

What is the difference between 686HZZ and 686ZZ?

They have the same basic dimensions, but 686HZZ is the stainless steel EZO version. The H designation is therefore important when selecting the bearing.

Are 686HZZ and a 2RS version identical?

No. ZZ indicates metal shields, while 2RS identifies a version with seals on both sides. The correct closure should be selected according to operating conditions.

Can any 6x13x5 mm bearing replace EZO 686HZZ?

Not automatically. Material construction, closure type and required operating characteristics must also be verified.

EZO 686HZZ - key information

EZO 686HZZ 6x13x5 mm is a miniature stainless steel deep groove ball bearing with ZZ metal shields on both sides. The H designation identifies the stainless steel version, while its compact 6x13x5 mm dimensions make it suitable for small precision mechanisms with limited installation space.

Available from simmering.pl, a specialist supplier of bearings and industrial components. Stock in Poland with worldwide shipping.