SKF 6808-ZZ Bearing — Specifications, Dimensions & Cross-Reference

The SKF 6808-ZZ is a deep groove ball bearing double metal shielded manufactured by SKF. It belongs to the 6800 series and features dimensions of 40 × 52 × 7 mm (bore × OD × width). This bearing has a dynamic load rating of 3,280 N and a static load rating of 2,600 N, making it suitable for light-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	40 mm
Outside Diameter (D)	52 mm
Width (B)	7 mm
Weight	0.028 kg

Performance
Dynamic Load Rating (Cr)	3,280 N
Static Load Rating (C₀r)	2,600 N
Limiting Speed (Grease)	13,000 rpm
Limiting Speed (Oil)	18,000 rpm

💡 Application Note: The 6800 series bearings are commonly used in precision instruments, medical devices, dental handpieces, and miniature mechanisms. The -ZZ suffix indicates double metal shields, offering good protection while maintaining lower friction than rubber seals — suitable for higher speed applications.

Brand Cross-Reference — 6808-ZZ Equivalents

The following bearings from other manufacturers are interchangeable with the SKF 6808-ZZ. All share identical dimensions (40×52×7mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
SKF	SKF 6808-ZZ ✦	3,280	2,600
Timken	Timken 6808-ZZ	3,280	2,600
NTN	NTN 6808-ZZ	3,280	2,600
NACHI	NACHI 6808-ZZ	3,280	2,600
KOYO	KOYO 6808-ZZ	3,280	2,600
FAG	FAG 6808-ZZ	3,280	2,600
Timken	Timken 6808-ZZ	3,280	2,600
NSK	NSK 6808-ZZ	3,280	2,600
NTN	NTN 6808-ZZ	3,280	2,600
SKF	SKF 6808-ZZ	3,280	2,600

Available Variants

The SKF 6808 base bearing is available in these configurations:

SKF 6808-ZZ-C3

"Double shielded

SKF 6808-NR

Open with snap ring

SKF 6808-C3

"Open

SKF 6808-2Z

Double metal shielded (ISO)

SKF 6808-2RS-C3

"Double sealed

SKF 6808-2RS

Double rubber sealed

SKF 6808

Open (no seal/shield)

SKF 6808-NR

Open with snap ring

SKF 6808-ZZ-C3

Double shielded, C3 clearance

SKF 6808-2RS-C3

Double sealed, C3 clearance

SKF 6808-C3

Open, C3 clearance

SKF 6808-2Z

Double metal shielded (ISO)

SKF 6808-ZZ

Double metal shielded

SKF 6808-2RS

Double rubber sealed

SKF 6808

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the SKF 6808-ZZ?

The SKF 6808-ZZ has a bore diameter of 40mm, outside diameter of 52mm, and width of 7mm. It weighs 0.028kg.

What is the load capacity of the SKF 6808-ZZ?

The dynamic load rating (Cr) is 3,280 N and the static load rating (C₀r) is 2,600 N. The maximum recommended speed is 13,000 rpm with grease lubrication or 18,000 rpm with oil lubrication.

What bearings are equivalent to SKF 6808-ZZ?

The 6808-ZZ is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 40×52×7mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.