KOYO 51107-NR Bearing — Specifications, Dimensions & Cross-Reference

The KOYO 51107-NR is a thrust ball bearing with snap ring groove manufactured by KOYO. It belongs to the 51100 series and features dimensions of 35 × 52 × 12 mm (bore × OD × width). This bearing has a dynamic load rating of 19,000 N and a static load rating of 16,600 N, making it suitable for medium-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	35 mm
Outside Diameter (D)	52 mm
Width (B)	12 mm
Weight	0.073 kg

Performance
Dynamic Load Rating (Cr)	19,000 N
Static Load Rating (C₀r)	16,600 N
Limiting Speed (Grease)	5,300 rpm
Limiting Speed (Oil)	7,000 rpm

💡 Application Note: The 51100 series bearings are commonly used in automotive steering mechanisms, machine tool tables, and applications with pure 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 — 51107-NR Equivalents

The following bearings from other manufacturers are interchangeable with the KOYO 51107-NR. All share identical dimensions (35×52×12mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
KOYO	KOYO 51107-NR ✦	19,000	16,600
Timken	Timken 51107-NR	19,000	16,600
SKF	SKF 51107-NR	19,000	16,600
NACHI	NACHI 51107-NR	19,000	16,600
Timken	Timken 51107-NR	19,000	16,600
FAG	FAG 51107-NR	19,000	16,600
NSK	NSK 51107-NR	19,000	16,600
NTN	NTN 51107-NR	19,000	16,600
SKF	SKF 51107-NR	19,000	16,600

Available Variants

The KOYO 51107 base bearing is available in these configurations:

KOYO 51107-ZZ-C3

"Double shielded

KOYO 51107-ZZ

Double metal shielded

KOYO 51107-C3

"Open

KOYO 51107-2Z

Double metal shielded (ISO)

KOYO 51107-2RS-C3

"Double sealed

KOYO 51107-2RS

Double rubber sealed

KOYO 51107

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the KOYO 51107-NR?

The KOYO 51107-NR has a bore diameter of 35mm, outside diameter of 52mm, and width of 12mm. It weighs 0.073kg.

What is the load capacity of the KOYO 51107-NR?

The dynamic load rating (Cr) is 19,000 N and the static load rating (C₀r) is 16,600 N. The maximum recommended speed is 5,300 rpm with grease lubrication or 7,000 rpm with oil lubrication.

What bearings are equivalent to KOYO 51107-NR?

The 51107-NR is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 35×52×12mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.