NTN 6198-ZZ Bearing — Specifications, Dimensions & Cross-Reference

The NTN 6198-ZZ is a deep groove ball bearing double metal shielded manufactured by NTN. It belongs to the 619 series and features dimensions of 40 × 68 × 15 mm (bore × OD × width). This bearing has a dynamic load rating of 16,800 N and a static load rating of 11,600 N, making it suitable for medium-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	40 mm
Outside Diameter (D)	68 mm
Width (B)	15 mm
Weight	0.180 kg

Performance
Dynamic Load Rating (Cr)	16,800 N
Static Load Rating (C₀r)	11,600 N
Limiting Speed (Grease)	10,000 rpm
Limiting Speed (Oil)	12,000 rpm

💡 Application Note: The 619 series bearings are commonly used in thin-section applications, robotics, aerospace mechanisms, and space-constrained designs. 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 — 6198-ZZ Equivalents

The following bearings from other manufacturers are interchangeable with the NTN 6198-ZZ. All share identical dimensions (40×68×15mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NTN	NTN 6198-ZZ ✦	16,800	11,600
NTN	NTN 6198-ZZ	16,800	11,600
NACHI	NACHI 6198-ZZ	16,800	11,600
KOYO	KOYO 6198-ZZ	16,800	11,600
Timken	Timken 6198-ZZ	16,800	11,600
FAG	FAG 6198-ZZ	16,800	11,600
NSK	NSK 6198-ZZ	16,800	11,600
SKF	SKF 6198-ZZ	16,800	11,600

Available Variants

The NTN 6198 base bearing is available in these configurations:

NTN 6198-ZZ-C3

"Double shielded

NTN 6198-ZZ

Double metal shielded

NTN 6198-NR

Open with snap ring

NTN 6198-C3

"Open

NTN 6198-2Z

Double metal shielded (ISO)

NTN 6198-2RS-C3

"Double sealed

NTN 6198-2RS

Double rubber sealed

NTN 6198

Open (no seal/shield)

NTN 6198-NR

Open with snap ring

NTN 6198-ZZ-C3

Double shielded, C3 clearance

NTN 6198-2RS-C3

Double sealed, C3 clearance

NTN 6198-C3

Open, C3 clearance

NTN 6198-2Z

Double metal shielded (ISO)

NTN 6198-2RS

Double rubber sealed

NTN 6198

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NTN 6198-ZZ?

The NTN 6198-ZZ has a bore diameter of 40mm, outside diameter of 68mm, and width of 15mm. It weighs 0.180kg.

What is the load capacity of the NTN 6198-ZZ?

The dynamic load rating (Cr) is 16,800 N and the static load rating (C₀r) is 11,600 N. The maximum recommended speed is 10,000 rpm with grease lubrication or 12,000 rpm with oil lubrication.

What bearings are equivalent to NTN 6198-ZZ?

The 6198-ZZ is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 40×68×15mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.