NTN 7204-NR Bearing — Specifications, Dimensions & Cross-Reference

The NTN 7204-NR is a angular contact ball bearing with snap ring groove manufactured by NTN. It belongs to the 7200 series and features dimensions of 20 × 47 × 14 mm (bore × OD × width). This bearing has a dynamic load rating of 12,700 N and a static load rating of 6,550 N, making it suitable for medium-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	20 mm
Outside Diameter (D)	47 mm
Width (B)	14 mm
Weight	0.106 kg

Performance
Dynamic Load Rating (Cr)	12,700 N
Static Load Rating (C₀r)	6,550 N
Limiting Speed (Grease)	15,000 rpm
Limiting Speed (Oil)	18,000 rpm

💡 Application Note: The 7200 series bearings are commonly used in machine tool spindles, pumps, compressors, and applications requiring combined radial and axial loads. The -NR suffix indicates an external snap ring groove on the outer ring, allowing easy axial location in housing bores.

Brand Cross-Reference — 7204-NR Equivalents

The following bearings from other manufacturers are interchangeable with the NTN 7204-NR. All share identical dimensions (20×47×14mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NTN	NTN 7204-NR ✦	12,700	6,550
SKF	SKF 7204-NR	12,700	6,550
NTN	NTN 7204-NR	12,700	6,550
KOYO	KOYO 7204-NR	12,700	6,550
FAG	FAG 7204-NR	12,700	6,550
NACHI	NACHI 7204-NR	12,700	6,550
Timken	Timken 7204-NR	12,700	6,550
NSK	NSK 7204-NR	12,700	6,550
SKF	SKF 7204-NR	12,700	6,550

Available Variants

The NTN 7204 base bearing is available in these configurations:

NTN 7204-ZZ-C3

"Double shielded

NTN 7204-ZZ

Double metal shielded

NTN 7204-NR

Open with snap ring

NTN 7204-C3

"Open

NTN 7204-2Z

Double metal shielded (ISO)

NTN 7204-2RS-C3

"Double sealed

NTN 7204-2RS

Double rubber sealed

NTN 7204

Open (no seal/shield)

NTN 7204-ZZ-C3

Double shielded, C3 clearance

NTN 7204-2RS-C3

Double sealed, C3 clearance

NTN 7204-C3

Open, C3 clearance

NTN 7204-2Z

Double metal shielded (ISO)

NTN 7204-ZZ

Double metal shielded

NTN 7204-2RS

Double rubber sealed

NTN 7204

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NTN 7204-NR?

The NTN 7204-NR has a bore diameter of 20mm, outside diameter of 47mm, and width of 14mm. It weighs 0.106kg.

What is the load capacity of the NTN 7204-NR?

The dynamic load rating (Cr) is 12,700 N and the static load rating (C₀r) is 6,550 N. The maximum recommended speed is 15,000 rpm with grease lubrication or 18,000 rpm with oil lubrication.

What bearings are equivalent to NTN 7204-NR?

The 7204-NR is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 20×47×14mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.