NACHI 6914-ZZ Bearing — Specifications, Dimensions & Cross-Reference

The NACHI 6914-ZZ is a deep groove ball bearing double metal shielded manufactured by NACHI. It belongs to the 6900 series and features dimensions of 70 × 100 × 16 mm (bore × OD × width). This bearing has a dynamic load rating of 21,600 N and a static load rating of 18,300 N, making it suitable for heavy-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	70 mm
Outside Diameter (D)	100 mm
Width (B)	16 mm
Weight	0.230 kg

Performance
Dynamic Load Rating (Cr)	21,600 N
Static Load Rating (C₀r)	18,300 N
Limiting Speed (Grease)	6,300 rpm
Limiting Speed (Oil)	8,500 rpm

💡 Application Note: The 6900 series bearings are commonly used in office equipment, small electric motors, and light industrial applications. 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 — 6914-ZZ Equivalents

The following bearings from other manufacturers are interchangeable with the NACHI 6914-ZZ. All share identical dimensions (70×100×16mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NACHI	NACHI 6914-ZZ ✦	21,600	18,300
Timken	Timken 6914-ZZ	21,600	18,300
SKF	SKF 6914-ZZ	21,600	18,300
NTN	NTN 6914-ZZ	21,600	18,300
KOYO	KOYO 6914-ZZ	21,600	18,300
FAG	FAG 6914-ZZ	21,600	18,300
Timken	Timken 6914-ZZ	21,600	18,300
NSK	NSK 6914-ZZ	21,600	18,300
NTN	NTN 6914-ZZ	21,600	18,300
SKF	SKF 6914-ZZ	21,600	18,300

Available Variants

The NACHI 6914 base bearing is available in these configurations:

NACHI 6914-NR

Open with snap ring

NACHI 6914-ZZ-C3

Double shielded, C3 clearance

NACHI 6914-2RS-C3

Double sealed, C3 clearance

NACHI 6914-C3

Open, C3 clearance

NACHI 6914-2Z

Double metal shielded (ISO)

NACHI 6914-2RS

Double rubber sealed

NACHI 6914

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NACHI 6914-ZZ?

The NACHI 6914-ZZ has a bore diameter of 70mm, outside diameter of 100mm, and width of 16mm. It weighs 0.230kg.

What is the load capacity of the NACHI 6914-ZZ?

The dynamic load rating (Cr) is 21,600 N and the static load rating (C₀r) is 18,300 N. The maximum recommended speed is 6,300 rpm with grease lubrication or 8,500 rpm with oil lubrication.

What bearings are equivalent to NACHI 6914-ZZ?

The 6914-ZZ is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 70×100×16mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.