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

Customized Mahcined Ball Transfer Unit FB-021

The FB-021 is a customized machined ball transfer unit with a 30.16 mm diameter ball, rated for 250 kg working load and 300 kg maximum load. It features a flange mount with a 45 mm diameter mounting hole and is available with a nylon, steel or stainless steel main ball in a steel or stainless steel case. The unit weighs 320 g and is designed for use in conveyor transfer points, feeding systems and processing machinery where omnidirectional movement of flat, smooth objects is required.

Customized machined ball transfer unit FB-021 with flange mount and steel ball
Customized machined ball transfer unit FB-021 with flange mount and steel ball

Product Overview

The FB-021 is a customized machined ball transfer unit with a 30.16 mm diameter ball, rated for 250 kg working load and 300 kg maximum load. It features a flange mount with a 45 mm diameter mounting hole and is available with a nylon, steel or stainless steel main ball in a steel or stainless steel case. The unit weighs 320 g and is designed for use in conveyor transfer points, feeding systems and processing machinery where omnidirectional movement of flat, smooth objects is required.

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

Key Benefits

  • 250 kg working load and 300 kg maximum load for heavy-duty transfer points
  • Flange mount with 45 mm diameter hole allows secure bolt-on installation
  • 30.16 mm diameter ball enables smooth omnidirectional movement of flat loads
  • Available with nylon, steel or stainless steel ball to match surface requirements
  • Steel or stainless steel case for durability in industrial environments

Application Scenarios

  • Transfer points between two conveyor lines running at different angles
  • Feeding systems where trays or flat components need to be rotated or repositioned
  • Processing machinery with curved work surfaces requiring continuous load movement
  • Packaging lines where flat containers are moved and aligned by hand
  • Assembly stations where a fixture must be turned freely in any direction

Who It Is For

  • Conveyor system integrators building high-load transfer and rotation points
  • Material handling equipment builders designing feeding and processing tables
  • Industrial automation contractors installing omnidirectional transfer systems
  • Production line builders needing consistent ball transfer units for heavy loads
  • Industrial distributors stocking ball transfer units by load and mounting type

Problems It Solves

  • Heavy flat loads that jam or bind when pushed across a fixed deck plate
  • Transfer points where product must change direction without powered diverters
  • Operators struggling to rotate or align a heavy tray or fixture by hand
  • Inconsistent performance when using multiple suppliers for ball transfer units
  • Lack of matching shaft size, diameter or load rating across a single component range

Technical Features

  • Fine machined ball and seat for consistent rolling under heavy static load
  • Flange mount with two screw holes for secure attachment to worktable or deck
  • 30.16 mm diameter ball allows smooth omnidirectional movement of flat objects
  • Case and ball materials selected independently to suit environment and surface contact
  • Compact dimensions of 55 mm diameter and 37.5 mm height for tight installation spaces

Materials

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

Quality Control

  • Load capacity verified against the 250 kg working load before packing
  • Ball rotation checked by hand for free movement in all directions
  • Material grade confirmed against the ball and case option ordered
  • Flange hole alignment checked to ensure proper bolt-on installation
  • Unit weight measured to confirm 320 g for shipping and deck load calculations

Customization Options

  • Ball material selected between nylon, steel and stainless steel
  • Case material selected between steel and stainless steel
  • Mounting diameter and flange hole pattern available in standard sizes
  • Other load ratings available in the same series upon request
  • Dimensions can be adjusted for specific deck or mounting plate requirements

Use Guide

  • Divide the total load by the number of units in contact to ensure no unit exceeds 250 kg working load
  • Keep peak and impact loading below the 300 kg maximum load limit
  • Mount units on a flat, rigid deck plate so all balls sit at the same height
  • Use nylon ball where the load surface must not be marked or scratched
  • Use stainless steel ball and case where the unit is exposed to washdown or corrosive conditions

Specifications

Model NoFB-021
MountingFlange mount
Load Capacity250 kg
Max Load Capacity300 kg
Weight320 g
Ball Diameter30.16 mm
Mount Diameter45 mm
Ball MaterialNylon, steel, stainless steel
Case MaterialSteel, stainless steel
Dimension55 × 37.5 mm

Manufacturing Process

Step 1

Machining of the case and ball seat to precise tolerances

Step 2

Assembly of the ball and supporting components into the housing

Step 3

Drilling and finishing of the flange mounting holes

Step 4

Final load check against the 250 kg working capacity

Step 5

Packing with material and load rating confirmed per order

Compared With Other Options

Press fit ball transfer unitsFlange mount allows removal and replacement without damaging the deck, while press fit units are faster to install but harder to service
Lower rated FB Series unitsThe FB-021 suits 250 kg loads, so lighter applications are better served by smaller units with lower rolling resistance
Plain conveyor rollersBall transfer units allow omnidirectional movement, while rollers only move product along one axis

Customized Mahcined Ball Transfer Unit FB-021 Questions

What is the working load capacity of the FB-021?

The working load capacity is 250 kg per unit, with a maximum load capacity of 300 kg.

How is the FB-021 mounted?

It uses a flange mount with a 45 mm diameter hole and two screw holes for secure bolt-on installation.

Which ball materials are available?

The ball is available in nylon, carbon steel or stainless steel (SUS304) to suit different surface and environment needs.

Is a stainless steel version available?

Yes, both the ball and the case can be supplied in stainless steel (SUS304) for wet or corrosive environments.

What is the ball diameter?

The ball diameter is 30.16 mm (1.19 inches), suitable for smooth flat objects like trays.

How much does the unit weigh?

Each FB-021 weighs 320 g, which is used for deck load and shipping calculations.

Can I get other load ratings in this series?

Yes, other load ratings in the FB Series are available upon request.

Get a Price for Customized Mahcined Ball Transfer Unit FB-021

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