Tianhe Conveying Machine Co.,Ltd · Wuxi Jiangsu China
IK UK Series

Downward Ball Transfer Unit UK-38

The UK-38 is a downward ball transfer unit with a 38.1 mm diameter steel ball, rated for 200 kg working load and 250 kg maximum load. It mounts through a downward flange onto a deck plate or workbench, allowing flat, smooth objects like trays to be moved and rotated in any direction by hand. The unit weighs 2.9 kg and is available with a steel, galvanized steel, chrome-plated steel, or stainless steel case. It features two threaded holes around the bearing for secure attachment to a work surface.

Downward ball transfer unit UK-38 mounted on a workbench with two screw holes visible, steel ball and steel case
Downward ball transfer unit UK-38 mounted on a workbench with two screw holes visible, steel ball and steel case

Product Overview

The UK-38 is a downward ball transfer unit with a 38.1 mm diameter steel ball, rated for 200 kg working load and 250 kg maximum load. It mounts through a downward flange onto a deck plate or workbench, allowing flat, smooth objects like trays to be moved and rotated in any direction by hand. The unit weighs 2.9 kg and is available with a steel, galvanized steel, chrome-plated steel, or stainless steel case. It features two threaded holes around the bearing for secure attachment to a work surface.

Part of the IK UK Series range, used in Warehouse and Distribution Centres.

Key Benefits

  • 200 kg working load and 250 kg maximum load per unit for heavy-duty handling
  • Downward mount fixes the unit from below, allowing full deck access and stable mounting
  • 38.1 mm diameter steel ball enables smooth omnidirectional movement under load
  • Available in steel, galvanized steel, chrome-plated steel, or stainless steel case for different environments
  • Two screw holes around the bearing allow secure attachment to worktables or benches

Application Scenarios

  • Transfer points on a curved workbench or router table where trays need to be repositioned
  • Assembly lines where flat components must be rotated or aligned by hand
  • Packaging machinery where trays are moved between stations without powered conveyance
  • Feeding systems for processing machinery requiring manual reorientation of flat items
  • Workbenches in machining or fabrication areas where heavy flat parts are adjusted

Who It Is For

  • Conveyor system integrators building manual transfer points into automated lines
  • Industrial equipment builders designing workbenches with adjustable positioning
  • Assembly line engineers needing manual rotation of flat components at workstations
  • Material handling equipment makers integrating ball transfer units into processing tables
  • Industrial distributors stocking downward ball transfer units by load and mounting type

Problems It Solves

  • Manual repositioning of heavy flat items that cannot be rotated on fixed rollers
  • Transfer points where product must change direction without powered diverters
  • Workbenches that require stable, load-bearing support for heavy flat parts during assembly
  • Mounting systems where a downward fix is needed to avoid interference with moving parts
  • Work surfaces where a secure attachment method is required to prevent unit movement

Technical Features

  • 38.1 mm diameter steel ball for high load capacity and smooth rolling
  • Downward mount with flange and two screw holes for secure attachment
  • Steel case with options for galvanizing, chrome plating, or stainless steel finish
  • 38.1 mm ball diameter matches standard 1.5-inch roller sizes for compatibility
  • Unit weight of 2.9 kg for deck load and shipping planning

Materials

  • Carbon steel ball and case for general industrial use
  • Galvanized steel case for improved corrosion resistance in damp environments
  • Chrome-plated steel case for wear resistance and appearance
  • Stainless steel case (SUS304) for washdown, food, or corrosive environments

Quality Control

  • Load capacity verified against the 200 kg working load rating before packing
  • Ball rotation checked by hand for free movement in all directions
  • Material grade confirmed against the case material option ordered
  • Mounting holes inspected for correct alignment and thread integrity

Customization Options

  • Case material selected between carbon steel, galvanized steel, chrome-plated steel, or stainless steel
  • Ball material is steel, with no nylon option available
  • Other UK Series models available for different load ratings or mounting styles

Use Guide

  • Ensure the load is distributed evenly across multiple units to stay within the 200 kg per unit rating
  • Keep peak and impact loading below the 250 kg maximum load capacity
  • Mount the unit on a flat, rigid deck plate so the ball sits at the correct height
  • Use stainless steel case in wet or washdown environments to prevent corrosion
  • Avoid using on surfaces with uneven or soft bottoms such as cloth-wrapped items

Specifications

Model NoUK-38
MountingDownward mount
Load Capacity200 kg
Max Load Capacity250 kg
Weight2.9 kg
Ball Diameter38.1 mm
Mount Diameter58 mm
Ball MaterialSteel
Case MaterialSteel, galvanized steel, chrome-plated steel, stainless steel

Manufacturing Process

Step 1

Machining of the downward flange and case body

Step 2

Assembly of the steel ball and bearing support

Step 3

Drilling and threading of two mounting holes around the bearing

Step 4

Surface treatment applied based on case material (galvanizing, chrome plating, or stainless steel)

Step 5

Final load check and packing

Compared With Other Options

Upward ball transfer unitsDownward mount allows the unit to be fixed from below, leaving the deck surface unobstructed, while upward units are mounted from above and may interfere with moving parts
Press fit ball transfer unitsDownward mount with screw holes provides a more secure attachment than press fit, which relies on friction and can loosen under vibration
Lower rated UK Series unitsThe UK-38 suits 200 kg loads, so lighter applications may benefit from a smaller unit with less rolling resistance

Downward Ball Transfer Unit UK-38 Questions

What load can one UK-38 ball transfer unit carry?

The rated load capacity is 200 kg per unit and the maximum load capacity is 250 kg.

How is the UK-38 mounted?

It is a downward mount unit, fixed from below using two screw holes around the bearing.

Which case material should I choose?

Carbon steel for general use, galvanized steel for damp areas, chrome-plated steel for wear resistance, stainless steel (SUS304) for washdown or corrosive environments.

Is a stainless steel version available?

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

How much does the unit weigh?

Each UK-38 weighs 2.9 kg, which is used for deck load and shipping calculations.

Can I get other load ratings in the same series?

Yes, the UK Series includes other models with different load ratings and mounting types.

Get a Price for Downward Ball Transfer Unit UK-38

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