6803ZZ EZO 17x26x5 mm - Thin-Section Deep Groove Ball Bearing

6803ZZ EZO 17x26x5 mm - Thin-Section Deep Groove Ball Bearing

EZO 6803ZZ is a single-row thin-section deep groove ball bearing with dimensions 17x26x5 mm, belonging to the 68 dimension series. The ZZ suffix identifies metal shields on both sides. Its small radial cross-section and 5 mm width make the bearing suitable for compact bearing arrangements where radial and axial installation space is limited.

Technical data

EZO 6803ZZ dimensions

The basic dimensions are:

d: 17 mm
D: 26 mm
B: 5 mm

Complete dimensional specification:

17x26x5 mm

The 68 series has a particularly small cross-section in relation to the bore diameter, making 6803ZZ suitable for bearing arrangements where installation space must be minimized.

What does 6803ZZ mean?

68 - thin-section dimension series of deep groove ball bearings.

03 - bore code corresponding to a 17 mm bore diameter.

ZZ - metal shields on both sides of the bearing.

The complete 6803ZZ designation is important when selecting a replacement because open, shielded and sealed variants can share the same basic dimensions while differing in construction and operating characteristics.

EZO 6803ZZ construction

EZO 6803ZZ is a single-row deep groove ball bearing consisting of:

• inner ring,
• outer ring,
• balls,
• cage,
• metal shields on both sides.

Its deep raceway geometry is designed primarily to accommodate radial loads. Deep groove ball bearings can also accommodate axial loads within the operating limits of the specific bearing arrangement.

What does ZZ mean?

The ZZ suffix identifies 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 used in 2RS versions.

6803ZZ vs 6803

Both versions have the same basic dimensions of 17x26x5 mm, but their closure designs differ.

6803ZZ - metal shields on both sides.

6803 - open bearing version.

The ZZ version provides additional protection for the bearing interior, while the open version provides direct access to the raceways and rolling elements.

6803ZZ vs 6803-2RS

The basic dimensions may be the same, but the closure system is different.

6803ZZ - metal shields on both sides.

6803-2RS - seals on both sides.

Selection between ZZ and 2RS should take into account contamination, protection requirements, operating speed and other application conditions. The two versions should not automatically be considered technically identical.

Why is the 6803 series considered thin-section?

With a 17 mm bore, the bearing has an outside diameter of only 26 mm and a width of just 5 mm.

This geometry helps reduce:

• required housing diameter,
• radial installation space,
• axial installation width.

The compact cross-section also means that bearing selection should consider actual loads and operating conditions rather than dimensions alone.

Selection and interchangeability

Before selecting EZO 6803ZZ, verify:

• complete 6803ZZ designation,
• 17 mm bore diameter,
• 26 mm outside diameter,
• 5 mm width,
• ZZ shield configuration,
• required load capacity,
• operating speed,
• environmental conditions,
• lubrication requirements,
• shaft and housing fits.

Identical 17x26x5 mm dimensions do not automatically confirm complete interchangeability between different bearing versions.

Installation

Before installation, ensure that the bearing, shaft and housing are clean.

When fitting the bearing onto a shaft, mounting force should be applied to the inner ring. When pressing it 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 reference formats

• EZO 6803ZZ
• 6803ZZ EZO
• 6803 ZZ EZO
• EZO 6803 ZZ
• 6803ZZ 17x26x5
• EZO 6803ZZ 17x26x5
• 6803 ZZ 17x26x5
• 6803 bearing 17x26x5

FAQ - EZO 6803ZZ

What are the dimensions of EZO 6803ZZ?

The bearing measures 17x26x5 mm, with a 17 mm bore, 26 mm outside diameter and 5 mm width.

What type of bearing is 6803ZZ?

It is a single-row thin-section deep groove ball bearing.

What does ZZ mean in 6803ZZ?

ZZ indicates metal shields on both sides of the bearing.

Is 6803ZZ an open bearing?

No. It has metal shields on both sides.

What is the difference between 6803ZZ and 6803?

6803ZZ has metal shields on both sides, while the basic 6803 version is open.

What is the difference between 6803ZZ and 6803-2RS?

6803ZZ uses metal shields, while 6803-2RS uses seals on both sides. These are different methods of protecting the bearing interior.

Can any 17x26x5 mm bearing replace EZO 6803ZZ?

Not automatically. The complete designation, closure design and required operating characteristics must also be verified.

6803ZZ EZO - key information

EZO 6803ZZ 17x26x5 mm is a single-row thin-section deep groove ball bearing from the 68 dimension series. It has a 17 mm bore, 26 mm outside diameter and 5 mm width. The ZZ suffix identifies metal shields on both sides, providing protection for the bearing interior while maintaining a compact cross-section.

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