NACHI 51110-ZZ Bearing — Specifications, Dimensions & Cross-Reference

The NACHI 51110-ZZ is a thrust ball bearing double metal shielded manufactured by NACHI. It belongs to the 51100 series and features dimensions of 50 × 70 × 14 mm (bore × OD × width). This bearing has a dynamic load rating of 29,600 N and a static load rating of 29,000 N, making it suitable for heavy-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	50 mm
Outside Diameter (D)	70 mm
Width (B)	14 mm
Weight	0.135 kg

Performance
Dynamic Load Rating (Cr)	29,600 N
Static Load Rating (C₀r)	29,000 N
Limiting Speed (Grease)	4,000 rpm
Limiting Speed (Oil)	5,300 rpm

💡 Application Note: The 51100 series bearings are commonly used in automotive steering mechanisms, machine tool tables, and applications with pure axial loads. 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 — 51110-ZZ Equivalents

The following bearings from other manufacturers are interchangeable with the NACHI 51110-ZZ. All share identical dimensions (50×70×14mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NACHI	NACHI 51110-ZZ ✦	29,600	29,000
Timken	Timken 51110-ZZ	29,600	29,000
SKF	SKF 51110-ZZ	29,600	29,000
NTN	NTN 51110-ZZ	29,600	29,000
KOYO	KOYO 51110-ZZ	29,600	29,000
Timken	Timken 51110-ZZ	29,600	29,000
NSK	NSK 51110-ZZ	29,600	29,000
FAG	FAG 51110-ZZ	29,600	29,000
NTN	NTN 51110-ZZ	29,600	29,000
SKF	SKF 51110-ZZ	29,600	29,000

Available Variants

The NACHI 51110 base bearing is available in these configurations:

NACHI 51110-ZZ-C3

"Double shielded

NACHI 51110-NR

Open with snap ring

NACHI 51110-C3

"Open

NACHI 51110-2Z

Double metal shielded (ISO)

NACHI 51110-2RS-C3

"Double sealed

NACHI 51110-2RS

Double rubber sealed

NACHI 51110

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NACHI 51110-ZZ?

The NACHI 51110-ZZ has a bore diameter of 50mm, outside diameter of 70mm, and width of 14mm. It weighs 0.135kg.

What is the load capacity of the NACHI 51110-ZZ?

The dynamic load rating (Cr) is 29,600 N and the static load rating (C₀r) is 29,000 N. The maximum recommended speed is 4,000 rpm with grease lubrication or 5,300 rpm with oil lubrication.

What bearings are equivalent to NACHI 51110-ZZ?

The 51110-ZZ is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 50×70×14mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.