Tianhe Conveying Machine Co.,Ltd · Wuxi Jiangsu China
NJ LW FB Series

Stud Mount Hexagon Ball Transfer Unit NJ-12

The NJ-12 is a stud mount hexagon ball transfer unit with a 12 mm diameter ball, rated for 5 kg working load and 10 kg maximum load. It is mounted via an M12 stud into a worktable or deck plate, allowing flat, smooth objects like trays to be moved and rotated in any direction by hand. The unit weighs 25 g and is available with a nylon, steel or stainless steel ball in a steel or stainless steel case.

Stud mount hexagon ball transfer unit NJ-12 with nylon ball mounted on a worktable
Stud mount hexagon ball transfer unit NJ-12 with nylon ball mounted on a worktable

Product Overview

The NJ-12 is a stud mount hexagon ball transfer unit with a 12 mm diameter ball, rated for 5 kg working load and 10 kg maximum load. It is mounted via an M12 stud into a worktable or deck plate, allowing flat, smooth objects like trays to be moved and rotated in any direction by hand. The unit weighs 25 g and is available with a nylon, steel or stainless steel ball in a steel or stainless steel case.

Part of the NJ LW FB Series range, used in Sheet Metal and Press Shops.

Key Benefits

  • Carries 5 kg per unit in normal service and 10 kg at peak load
  • Stud mount with M12 diameter allows secure attachment to worktables or decks
  • Hexagon case design provides stable mounting and resistance to rotation under load
  • Nylon ball option protects painted or polished surfaces from marking
  • Stainless steel ball and case option for wet or washdown environments

Application Scenarios

  • Transfer points on a conveyor line where trays or flat components need to be rotated by hand
  • Feeding systems in packaging machinery where small flat items are repositioned
  • Processing tables where a tray must be moved freely in any direction during assembly
  • Workbenches in machine shops where a component is rotated between operations
  • Curved work surfaces on band saws or router tables requiring 360 degree movement

Who It Is For

  • Conveyor system integrators building manual transfer or rotation points
  • Material handling equipment builders designing workstations with omnidirectional movement
  • Industrial distributors stocking ball transfer units by load and mounting type
  • Assembly line builders needing low-friction transfer for flat components

Problems It Solves

  • Flat items that jam or drag when pushed across a fixed deck plate
  • Workstations where a load must be reoriented without powered alignment
  • Manual transfer points where a single direction of movement is not sufficient
  • Systems requiring a compact, stable mounting solution with minimal deck penetration
  • Worktables where surface damage from metal balls must be avoided

Technical Features

  • 12 mm diameter ball for precise fit with standard tray and deck dimensions
  • Stud mount with M12 diameter allows direct threading into a pre-drilled hole
  • Hexagon case shape prevents rotation during mounting and operation
  • Ball and case materials selected independently to suit the environment and load surface
  • Compact size of 18 x 28 mm (Diameter x Height) for tight space applications

Materials

  • Nylon ball for non-marking contact with painted or polished surfaces
  • Carbon steel ball and case for general industrial use
  • Stainless steel ball and case (SUS304) for wet, washdown or corrosive environments

Quality Control

  • Load capacity verified against the 5 kg working load rating before packing
  • Ball rotation checked by hand for free movement in all directions
  • Material grade confirmed against the ball and case option ordered

Customization Options

  • Ball material selected between nylon, steel and stainless steel
  • Case material selected between steel and stainless steel
  • Other NJ Series models available for different load ratings and mounting types

Use Guide

  • Divide the load by the number of units in contact to ensure no more than 5 kg per unit
  • Keep peak and impact loading below the 10 kg maximum load figure
  • Mount the unit into a flat, rigid deck plate to ensure all balls sit at the same height
  • Choose the nylon ball where the load surface must not be marked
  • Choose stainless steel ball and case where the deck is exposed to moisture or cleaning

Specifications

Model NoNJ-12
MountingStud mount
Mount DiameterM12
Load Capacity5 kg
Max Load Capacity10 kg
Weight25 g
Ball Diameter12 mm
Ball MaterialNylon, steel, stainless steel
Case MaterialSteel, stainless steel
Dimension18 x 28 mm

Manufacturing Process

Step 1

Machining of the hexagon case and stud base

Step 2

Assembly of the ball and bearing into the case

Step 3

Drilling and threading of the M12 stud hole

Step 4

Final inspection and packing

Compared With Other Options

Flange mount ball transfer unitsStud mount fits into a threaded hole and is more secure on thin decks, while flange mount requires a thicker plate and bolt access from above
Press fit ball transfer unitsStud mount allows removal and replacement without damaging the deck, while press fit units are harder to service
Lower rated NJ Series unitsThe NJ-12 suits 5 kg loads, so lighter applications are better served by smaller units that roll with less effort

Stud Mount Hexagon Ball Transfer Unit NJ-12 Questions

What load can one NJ-12 ball transfer unit carry?

The rated load capacity is 5 kg per unit and the maximum load capacity is 10 kg.

How is the NJ-12 mounted?

It is a stud mount unit with an M12 diameter stud, which is threaded into a pre-drilled hole in the deck plate.

Which ball material should I choose?

Nylon for surfaces that must not be marked, carbon steel for general use, and stainless steel for wet or washdown areas.

Is a stainless steel version available?

Yes, both the ball and the case can be supplied in stainless steel (SUS304).

How much does the unit weigh?

Each NJ-12 weighs 25 g, which is used for deck load and shipping calculations.

Can I get other load ratings in the same series?

Yes, the NJ Series includes other models with different load ratings, so ask for the model that matches your load per unit.

Get a Price for Stud Mount Hexagon Ball Transfer Unit NJ-12

Send the quantity and any material or surface option you need, and a quotation comes back against this model number.