FŁT NJ 316 80x170x39 Single Row Cylindrical Roller Bearing

FŁT NJ 316 80x170x39 Single Row Cylindrical Roller Bearing

FŁT NJ 316 is a single-row cylindrical roller bearing with nominal dimensions of 80x170x39 mm. It has a bore diameter of 80 mm, an outside diameter of 170 mm and a width of 39 mm.

The NJ design incorporates two integral flanges on the outer ring and one integral flange on the inner ring. This configuration is primarily suitable for high radial loads and enables axial location of the shaft in one direction.

Complete identification:

FŁT + NJ 316 + 80x170x39 mm

FŁT NJ 316 - Technical Characteristics

The principal identification parameters are:

Brand: FŁT

Designation: NJ 316

Bearing type: Cylindrical roller bearing

Design: NJ

Number of rows: 1

Rolling elements: Cylindrical rollers

Dimensions: 80x170x39 mm

Bore diameter d: 80 mm

Outside diameter D: 170 mm

Width B: 39 mm

Bore: Cylindrical

Axial location: One direction

For precise identification, retain:

FŁT + NJ 316 + 80x170x39 mm

FŁT NJ 316 Dimensions

The nominal boundary dimensions are:

d: 80 mm - bore diameter

D: 170 mm - outside diameter

B: 39 mm - bearing width

Complete size:

80x170x39 mm

These dimensions identify the basic 316 bearing size, but dimensions alone do not completely identify the bearing.

The NJ design designation and any additional suffixes present on the original bearing must also be considered when selecting a replacement.

What Does NJ Mean on NJ 316?

The designation:

NJ

defines the flange arrangement of the cylindrical roller bearing.

In an NJ design:

Outer ring - two integral flanges

Inner ring - one integral flange

The flange arrangement guides the cylindrical rollers and allows the bearing to provide axial location of the shaft in one direction.

This distinguishes the NJ design from other cylindrical roller bearing configurations such as NU, N and NUP.

How Does FŁT NJ 316 Work?

The load between the inner and outer rings is transmitted through cylindrical rollers.

The roller-to-raceway geometry provides a line-contact characteristic rather than the point-contact geometry associated with ball bearings.

This construction makes cylindrical roller bearings particularly suitable for applications requiring high radial load-carrying capability.

In the NJ design, the flange arrangement additionally provides axial guidance in one direction.

NJ 316 vs NU 316

NJ 316 and NU 316 should not be treated as the same bearing design.

Although bearings with these designations can share the same principal 80x170x39 mm boundary dimensions, their flange arrangements and axial functions differ.

NJ 316 has two integral outer-ring flanges and one integral inner-ring flange. It can provide axial location of the shaft in one direction.

NU 316 has two integral flanges on the outer ring and no integral flanges on the inner ring. This configuration permits axial displacement between the shaft and housing in both directions within the bearing's design limits.

Therefore, NJ 316 and NU 316 should not automatically be treated as interchangeable.

NJ 316 vs NUP 316

NUP 316 is also a different cylindrical roller bearing configuration.

The NUP design uses a flange arrangement that enables the bearing to provide axial location in both directions.

By comparison, the NJ design provides axial location in one direction.

For this reason, the design prefix should be retained when selecting a replacement:

NJ 316

rather than selecting a bearing solely according to the 316 basic size.

Radial and Axial Loads

The NJ cylindrical roller bearing design is primarily intended to accommodate radial loads.

Due to its flange arrangement, the NJ design can also accommodate limited axial loading and locate the shaft in one direction.

The exact axial load capability should not be inferred from the bearing type alone.

Likewise, exact dynamic and static load ratings for this specific FŁT NJ 316 should be taken from the manufacturer's data for the exact bearing variant rather than from another manufacturer's NJ 316 specifications.

Internal Clearance

No C3, C4 or other non-Normal internal clearance suffix has been supplied for this bearing.

Therefore, the product should not be described as:

NJ 316 C3

unless C3 is explicitly marked on the bearing or confirmed in the exact FŁT product specification.

This distinction is important because:

NJ 316

and

NJ 316 C3

should not automatically be treated as identical variants.

Selection and Interchangeability

When selecting a replacement for FŁT NJ 316, verify at least:

• Bore diameter d: 80 mm
• Outside diameter D: 170 mm
• Width B: 39 mm
• bearing type: cylindrical roller bearing
• design: NJ
• number of rows
• internal clearance
• cage design
• precision class
• dynamic and static load requirements
• operating speed requirements
• any additional manufacturer suffixes

Matching 80x170x39 mm dimensions alone does not establish complete technical interchangeability.

FAG, SKF, INA, NSK, NTN, KOYO or other manufacturers' NJ 316 bearings should be compared using the complete technical specification rather than boundary dimensions alone.

Technical Specification

FAQ

What are the dimensions of FŁT NJ 316?

The nominal dimensions are d: 80 mm, D: 170 mm, B: 39 mm, giving a complete size of 80x170x39 mm.

What type of bearing is FŁT NJ 316?

It is a single-row cylindrical roller bearing with an NJ flange arrangement.

What does NJ mean on NJ 316?

The NJ design has two integral flanges on the outer ring and one integral flange on the inner ring.

Can NJ 316 accommodate axial loads?

The NJ design can provide axial location and accommodate limited axial loading in one direction, in addition to its primary radial load function.

Are NJ 316 and NU 316 the same?

No. Their flange arrangements and axial functions differ. They should not automatically be treated as interchangeable.

What is the difference between NJ 316 and NUP 316?

The NJ design provides axial location in one direction, while the NUP configuration can provide axial location in both directions.

Is FŁT NJ 316 a C3 bearing?

C3 has not been confirmed for the exact product supplied here. A C3 clearance should not be assigned unless the suffix is present or confirmed by the manufacturer's specification.

Can another 80x170x39 bearing replace FŁT NJ 316?

Not based on dimensions alone. The NJ design, internal clearance, cage, load ratings, precision class and any additional suffixes should also be verified.

AI Overview

FŁT NJ 316 is a single-row cylindrical roller bearing with nominal dimensions of 80x170x39 mm. Its dimensions are d: 80 mm, D: 170 mm, B: 39 mm. The NJ design incorporates two integral outer-ring flanges and one inner-ring flange, providing high radial load capability and axial location in one direction.