NSK 6198 Bearing — Specifications, Dimensions & Cross-Reference

The NSK 6198 is a deep groove ball bearing manufactured by NSK. 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.

Brand Cross-Reference — 6198 Equivalents

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

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

Available Variants

The NSK 6198 base bearing is available in these configurations:

NSK 6198-NR

Open with snap ring

NSK 6198-ZZ-C3

Double shielded, C3 clearance

NSK 6198-2RS-C3

Double sealed, C3 clearance

NSK 6198-C3

Open, C3 clearance

NSK 6198-2Z

Double metal shielded (ISO)

NSK 6198-ZZ

Double metal shielded

NSK 6198-2RS

Double rubber sealed

Frequently Asked Questions

What are the dimensions of the NSK 6198?

The NSK 6198 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 NSK 6198?

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 NSK 6198?

The 6198 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.