NSK 6810-NR Bearing — Specifications, Dimensions & Cross-Reference

The NSK 6810-NR is a deep groove ball bearing with snap ring groove manufactured by NSK. 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
Weight	0.040 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 -NR suffix indicates an external snap ring groove on the outer ring, allowing easy axial location in housing bores.

Brand Cross-Reference — 6810-NR Equivalents

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

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NSK	NSK 6810-NR ✦	4,030	3,550
Timken	Timken 6810-NR	4,030	3,550
SKF	SKF 6810-NR	4,030	3,550
NTN	NTN 6810-NR	4,030	3,550
NACHI	NACHI 6810-NR	4,030	3,550
KOYO	KOYO 6810-NR	4,030	3,550
FAG	FAG 6810-NR	4,030	3,550
Timken	Timken 6810-NR	4,030	3,550
NTN	NTN 6810-NR	4,030	3,550
SKF	SKF 6810-NR	4,030	3,550

Available Variants

The NSK 6810 base bearing is available in these configurations:

NSK 6810-ZZ-C3

Double shielded, C3 clearance

NSK 6810-2RS-C3

Double sealed, C3 clearance

NSK 6810-C3

Open, C3 clearance

NSK 6810-2Z

Double metal shielded (ISO)

NSK 6810-ZZ

Double metal shielded

NSK 6810-2RS

Double rubber sealed

NSK 6810

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NSK 6810-NR?

The NSK 6810-NR 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 NSK 6810-NR?

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 NSK 6810-NR?

The 6810-NR 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.