NTN 6810-2Z Bearing — Specifications, Dimensions & Cross-Reference

The NTN 6810-2Z is a deep groove ball bearing double metal shielded manufactured by NTN. It belongs to the 6800 series and features dimensions of 50 × 65 × 7 mm (bore × OD × width). This bearing has a dynamic load rating of 4,030 N and a static load rating of 3,550 N, making it suitable for light-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)50 mm
Outside Diameter (D)65 mm
Width (B)7 mm
Weight0.040 kg
Performance
Dynamic Load Rating (Cr)4,030 N
Static Load Rating (C₀r)3,550 N
Limiting Speed (Grease)11,000 rpm
Limiting Speed (Oil)15,000 rpm
💡 Application Note: The 6800 series bearings are commonly used in precision instruments, medical devices, dental handpieces, and miniature mechanisms. The -2Z suffix indicates double metal shields, offering good protection while maintaining lower friction than rubber seals — suitable for higher speed applications.

Brand Cross-Reference — 6810-2Z Equivalents

The following bearings from other manufacturers are interchangeable with the NTN 6810-2Z. All share identical dimensions (50×65×7mm) and comparable load ratings:

BrandPart NumberDynamic Load (N)Static Load (N)
NTNNTN 6810-2Z ✦4,0303,550
Timken Timken 6810-2Z 4,030 3,550
SKF SKF 6810-2Z 4,030 3,550
NTN NTN 6810-2Z 4,030 3,550
NACHI NACHI 6810-2Z 4,030 3,550
KOYO KOYO 6810-2Z 4,030 3,550
FAG FAG 6810-2Z 4,030 3,550
Timken Timken 6810-2Z 4,030 3,550
NSK NSK 6810-2Z 4,030 3,550
SKF SKF 6810-2Z 4,030 3,550

Available Variants

The NTN 6810 base bearing is available in these configurations:

NTN 6810-ZZ-C3
"Double shielded
NTN 6810-ZZ
Double metal shielded
NTN 6810-NR
Open with snap ring
NTN 6810-C3
"Open
NTN 6810-2Z
Double metal shielded (ISO)
NTN 6810-2RS-C3
"Double sealed
NTN 6810-2RS
Double rubber sealed
NTN 6810
Open (no seal/shield)
NTN 6810-NR
Open with snap ring
NTN 6810-ZZ-C3
Double shielded, C3 clearance
NTN 6810-2RS-C3
Double sealed, C3 clearance
NTN 6810-C3
Open, C3 clearance
NTN 6810-ZZ
Double metal shielded
NTN 6810-2RS
Double rubber sealed
NTN 6810
Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NTN 6810-2Z?

The NTN 6810-2Z has a bore diameter of 50mm, outside diameter of 65mm, and width of 7mm. It weighs 0.040kg.

What is the load capacity of the NTN 6810-2Z?

The dynamic load rating (Cr) is 4,030 N and the static load rating (C₀r) is 3,550 N. The maximum recommended speed is 11,000 rpm with grease lubrication or 15,000 rpm with oil lubrication.

What bearings are equivalent to NTN 6810-2Z?

The 6810-2Z is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 50×65×7mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.