NACHI 6803-2RS Bearing — Specifications, Dimensions & Cross-Reference

The NACHI 6803-2RS is a deep groove ball bearing double rubber sealed manufactured by NACHI. It belongs to the 6800 series and features dimensions of 17 × 26 × 5 mm (bore × OD × width). This bearing has a dynamic load rating of 1,680 N and a static load rating of 1,020 N, making it suitable for light-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	17 mm
Outside Diameter (D)	26 mm
Width (B)	5 mm
Weight	0.008 kg

Performance
Dynamic Load Rating (Cr)	1,680 N
Static Load Rating (C₀r)	1,020 N
Limiting Speed (Grease)	22,000 rpm
Limiting Speed (Oil)	30,000 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 — 6803-2RS Equivalents

The following bearings from other manufacturers are interchangeable with the NACHI 6803-2RS. All share identical dimensions (17×26×5mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NACHI	NACHI 6803-2RS ✦	1,680	1,020
Timken	Timken 6803-2RS	1,680	1,020
SKF	SKF 6803-2RS	1,680	1,020
NTN	NTN 6803-2RS	1,680	1,020
KOYO	KOYO 6803-2RS	1,680	1,020
FAG	FAG 6803-2RS	1,680	1,020
Timken	Timken 6803-2RS	1,680	1,020
NSK	NSK 6803-2RS	1,680	1,020
NTN	NTN 6803-2RS	1,680	1,020
SKF	SKF 6803-2RS	1,680	1,020

Available Variants

The NACHI 6803 base bearing is available in these configurations:

NACHI 6803-ZZ-C3

"Double shielded

NACHI 6803-ZZ

Double metal shielded

NACHI 6803-NR

Open with snap ring

NACHI 6803-C3

"Open

NACHI 6803-2Z

Double metal shielded (ISO)

NACHI 6803-2RS-C3

"Double sealed

NACHI 6803

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NACHI 6803-2RS?

The NACHI 6803-2RS has a bore diameter of 17mm, outside diameter of 26mm, and width of 5mm. It weighs 0.008kg.

What is the load capacity of the NACHI 6803-2RS?

The dynamic load rating (Cr) is 1,680 N and the static load rating (C₀r) is 1,020 N. The maximum recommended speed is 22,000 rpm with grease lubrication or 30,000 rpm with oil lubrication.

What bearings are equivalent to NACHI 6803-2RS?

The 6803-2RS is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 17×26×5mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.