NSK 6815-ZZ Bearing — Specifications, Dimensions & Cross-Reference

The NSK 6815-ZZ is a deep groove ball bearing double metal shielded manufactured by NSK. It belongs to the 6800 series and features dimensions of 75 × 95 × 10 mm (bore × OD × width). This bearing has a dynamic load rating of 6,680 N and a static load rating of 6,200 N, making it suitable for light-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	75 mm
Outside Diameter (D)	95 mm
Width (B)	10 mm
Weight	0.098 kg

Performance
Dynamic Load Rating (Cr)	6,680 N
Static Load Rating (C₀r)	6,200 N
Limiting Speed (Grease)	6,700 rpm
Limiting Speed (Oil)	9,000 rpm

💡 Application Note: The 6800 series bearings are commonly used in precision instruments, medical devices, dental handpieces, and miniature mechanisms. The -ZZ suffix indicates double metal shields, offering good protection while maintaining lower friction than rubber seals — suitable for higher speed applications.

Brand Cross-Reference — 6815-ZZ Equivalents

The following bearings from other manufacturers are interchangeable with the NSK 6815-ZZ. All share identical dimensions (75×95×10mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NSK	NSK 6815-ZZ ✦	6,680	6,200
Timken	Timken 6815-ZZ	6,680	6,200
SKF	SKF 6815-ZZ	6,680	6,200
NTN	NTN 6815-ZZ	6,680	6,200
NACHI	NACHI 6815-ZZ	6,680	6,200
KOYO	KOYO 6815-ZZ	6,680	6,200
FAG	FAG 6815-ZZ	6,680	6,200
Timken	Timken 6815-ZZ	6,680	6,200
SKF	SKF 6815-ZZ	6,680	6,200
NTN	NTN 6815-ZZ	6,680	6,200

Available Variants

The NSK 6815 base bearing is available in these configurations:

NSK 6815-NR

Open with snap ring

NSK 6815-ZZ-C3

Double shielded, C3 clearance

NSK 6815-2RS-C3

Double sealed, C3 clearance

NSK 6815-C3

Open, C3 clearance

NSK 6815-2Z

Double metal shielded (ISO)

NSK 6815-2RS

Double rubber sealed

NSK 6815

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NSK 6815-ZZ?

The NSK 6815-ZZ has a bore diameter of 75mm, outside diameter of 95mm, and width of 10mm. It weighs 0.098kg.

What is the load capacity of the NSK 6815-ZZ?

The dynamic load rating (Cr) is 6,680 N and the static load rating (C₀r) is 6,200 N. The maximum recommended speed is 6,700 rpm with grease lubrication or 9,000 rpm with oil lubrication.

What bearings are equivalent to NSK 6815-ZZ?

The 6815-ZZ is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 75×95×10mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.