NTN 6018-ZZ-C3 Bearing — Specifications, Dimensions & Cross-Reference

The NTN 6018-ZZ-C3 is a deep groove ball bearing double metal shielded manufactured by NTN. It belongs to the 6000 series and features dimensions of 90 × 140 × 24 mm (bore × OD × width). This bearing has a dynamic load rating of 45,500 N and a static load rating of 40,500 N, making it suitable for heavy-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	90 mm
Outside Diameter (D)	140 mm
Width (B)	24 mm
Weight	0.920 kg

Performance
Dynamic Load Rating (Cr)	45,500 N
Static Load Rating (C₀r)	40,500 N
Limiting Speed (Grease)	4,300 rpm
Limiting Speed (Oil)	5,000 rpm

💡 Application Note: The 6000 series bearings are commonly used in electric motors, power tools, small pumps, and household appliances. 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 — 6018-ZZ-C3 Equivalents

The following bearings from other manufacturers are interchangeable with the NTN 6018-ZZ-C3. All share identical dimensions (90×140×24mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NTN	NTN 6018-ZZ-C3 ✦	45,500	40,500
Timken	Timken 6018-ZZ-C3	45,500	40,500
SKF	SKF 6018-ZZ-C3	45,500	40,500
NACHI	NACHI 6018-ZZ-C3	45,500	40,500
KOYO	KOYO 6018-ZZ-C3	45,500	40,500
Timken	Timken 6018-ZZ-C3	45,500	40,500
FAG	FAG 6018-ZZ-C3	45,500	40,500
NSK	NSK 6018-ZZ-C3	45,500	40,500
SKF	SKF 6018-ZZ-C3	45,500	40,500

Available Variants

The NTN 6018 base bearing is available in these configurations:

NTN 6018-NR

Open with snap ring

NTN 6018-2RS-C3

Double sealed, C3 clearance

NTN 6018-C3

Open, C3 clearance

NTN 6018-2Z

Double metal shielded (ISO)

NTN 6018-ZZ

Double metal shielded

NTN 6018-2RS

Double rubber sealed

NTN 6018

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NTN 6018-ZZ-C3?

The NTN 6018-ZZ-C3 has a bore diameter of 90mm, outside diameter of 140mm, and width of 24mm. It weighs 0.920kg.

What is the load capacity of the NTN 6018-ZZ-C3?

The dynamic load rating (Cr) is 45,500 N and the static load rating (C₀r) is 40,500 N. The maximum recommended speed is 4,300 rpm with grease lubrication or 5,000 rpm with oil lubrication.

What bearings are equivalent to NTN 6018-ZZ-C3?

The 6018-ZZ-C3 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 90×140×24mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.