NSK 6812-2RS Bearing — Specifications, Dimensions & Cross-Reference

The NSK 6812-2RS is a deep groove ball bearing double rubber sealed manufactured by NSK. It belongs to the 6800 series and features dimensions of 60 × 78 × 10 mm (bore × OD × width). This bearing has a dynamic load rating of 6,240 N and a static load rating of 5,300 N, making it suitable for light-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	60 mm
Outside Diameter (D)	78 mm
Width (B)	10 mm
Weight	0.073 kg

Performance
Dynamic Load Rating (Cr)	6,240 N
Static Load Rating (C₀r)	5,300 N
Limiting Speed (Grease)	8,500 rpm
Limiting Speed (Oil)	11,000 rpm

💡 Application Note: The 6800 series bearings are commonly used in precision instruments, medical devices, dental handpieces, and miniature mechanisms. The -2RS suffix indicates double rubber contact seals, providing excellent protection against dust, moisture, and contaminants — ideal for harsh operating environments.

Brand Cross-Reference — 6812-2RS Equivalents

The following bearings from other manufacturers are interchangeable with the NSK 6812-2RS. All share identical dimensions (60×78×10mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NSK	NSK 6812-2RS ✦	6,240	5,300
Timken	Timken 6812-2RS	6,240	5,300
SKF	SKF 6812-2RS	6,240	5,300
NTN	NTN 6812-2RS	6,240	5,300
NACHI	NACHI 6812-2RS	6,240	5,300
KOYO	KOYO 6812-2RS	6,240	5,300
FAG	FAG 6812-2RS	6,240	5,300
Timken	Timken 6812-2RS	6,240	5,300
NTN	NTN 6812-2RS	6,240	5,300
SKF	SKF 6812-2RS	6,240	5,300

Available Variants

The NSK 6812 base bearing is available in these configurations:

NSK 6812-NR

Open with snap ring

NSK 6812-ZZ-C3

Double shielded, C3 clearance

NSK 6812-2RS-C3

Double sealed, C3 clearance

NSK 6812-C3

Open, C3 clearance

NSK 6812-2Z

Double metal shielded (ISO)

NSK 6812-ZZ

Double metal shielded

NSK 6812

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NSK 6812-2RS?

The NSK 6812-2RS has a bore diameter of 60mm, outside diameter of 78mm, and width of 10mm. It weighs 0.073kg.

What is the load capacity of the NSK 6812-2RS?

The dynamic load rating (Cr) is 6,240 N and the static load rating (C₀r) is 5,300 N. The maximum recommended speed is 8,500 rpm with grease lubrication or 11,000 rpm with oil lubrication.

What bearings are equivalent to NSK 6812-2RS?

The 6812-2RS is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 60×78×10mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.