NTN 6806 Bearing — Specifications, Dimensions & Cross-Reference

The NTN 6806 is a deep groove ball bearing manufactured by NTN. It belongs to the 6800 series and features dimensions of 30 × 42 × 7 mm (bore × OD × width). This bearing has a dynamic load rating of 3,050 N and a static load rating of 2,240 N, making it suitable for light-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)30 mm
Outside Diameter (D)42 mm
Width (B)7 mm
Weight0.022 kg
Performance
Dynamic Load Rating (Cr)3,050 N
Static Load Rating (C₀r)2,240 N
Limiting Speed (Grease)15,000 rpm
Limiting Speed (Oil)21,000 rpm
💡 Application Note: The 6800 series bearings are commonly used in precision instruments, medical devices, dental handpieces, and miniature mechanisms.

Brand Cross-Reference — 6806 Equivalents

The following bearings from other manufacturers are interchangeable with the NTN 6806. All share identical dimensions (30×42×7mm) and comparable load ratings:

BrandPart NumberDynamic Load (N)Static Load (N)
NTNNTN 6806 ✦3,0502,240
Timken Timken 6806 3,050 2,240
SKF SKF 6806 3,050 2,240
NACHI NACHI 6806 3,050 2,240
KOYO KOYO 6806 3,050 2,240
FAG FAG 6806 3,050 2,240
Timken Timken 6806 3,050 2,240
NSK NSK 6806 3,050 2,240
NTN NTN 6806 3,050 2,240
SKF SKF 6806 3,050 2,240

Available Variants

The NTN 6806 base bearing is available in these configurations:

NTN 6806-ZZ-C3
"Double shielded
NTN 6806-ZZ
Double metal shielded
NTN 6806-NR
Open with snap ring
NTN 6806-C3
"Open
NTN 6806-2Z
Double metal shielded (ISO)
NTN 6806-2RS-C3
"Double sealed
NTN 6806-2RS
Double rubber sealed
NTN 6806-NR
Open with snap ring
NTN 6806-ZZ-C3
Double shielded, C3 clearance
NTN 6806-2RS-C3
Double sealed, C3 clearance
NTN 6806-C3
Open, C3 clearance
NTN 6806-2Z
Double metal shielded (ISO)
NTN 6806-ZZ
Double metal shielded
NTN 6806-2RS
Double rubber sealed
NTN 6806
Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NTN 6806?

The NTN 6806 has a bore diameter of 30mm, outside diameter of 42mm, and width of 7mm. It weighs 0.022kg.

What is the load capacity of the NTN 6806?

The dynamic load rating (Cr) is 3,050 N and the static load rating (C₀r) is 2,240 N. The maximum recommended speed is 15,000 rpm with grease lubrication or 21,000 rpm with oil lubrication.

What bearings are equivalent to NTN 6806?

The 6806 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 30×42×7mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.