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

Downward Ball Transfer Unit UK-51

The UK-51 is a downward ball transfer unit with a 52 mm diameter steel ball, rated for 300 kg working load and 350 kg maximum load. It mounts through a downward flange with two screw holes, allowing secure attachment to a worktable or deck. The unit weighs 5.5 kg and is available in carbon steel, galvanized steel, chrome-plated steel, or stainless steel (SUS304) case. It supports omnidirectional movement for flat, smooth objects such as trays and is used in feeding, processing, and packaging systems.

Downward ball transfer unit UK-51 mounted on a worktable with two screw holes, steel ball visible, 52 mm diameter
Downward ball transfer unit UK-51 mounted on a worktable with two screw holes, steel ball visible, 52 mm diameter

Product Overview

The UK-51 is a downward ball transfer unit with a 52 mm diameter steel ball, rated for 300 kg working load and 350 kg maximum load. It mounts through a downward flange with two screw holes, allowing secure attachment to a worktable or deck. The unit weighs 5.5 kg and is available in carbon steel, galvanized steel, chrome-plated steel, or stainless steel (SUS304) case. It supports omnidirectional movement for flat, smooth objects such as trays and is used in feeding, processing, and packaging systems.

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

Key Benefits

  • 300 kg working load and 350 kg maximum load per unit
  • Downward mount with two screw holes for secure attachment to a deck
  • 52 mm diameter steel ball allows smooth 360-degree rotation
  • Available in carbon steel, galvanized steel, chrome-plated steel, or stainless steel (SUS304) case
  • Suitable for flat, smooth surfaces such as trays and sheet metal

Application Scenarios

  • Feeding systems where trays or flat components need to be rotated or repositioned at a workstation
  • Processing machinery with curved work surfaces such as router tables or band saws
  • Packaging lines where product orientation must be adjusted without powered diverters
  • Assembly stations requiring manual repositioning of flat parts on a workbench
  • Conveyor transfer points where a load must be moved in any direction across a fixed deck

Who It Is For

  • Conveyor system integrators building feeding and transfer points
  • Industrial equipment builders designing workstations with adjustable positioning
  • Packaging machinery manufacturers needing omnidirectional movement
  • Assembly line builders requiring manual repositioning of flat components
  • Material handling equipment makers sourcing high-load ball transfer units

Problems It Solves

  • Heavy flat loads that cannot be rotated or repositioned by hand on a fixed deck
  • Transfer points where product must change direction without powered mechanisms
  • Workstations where a tray or component must be turned or aligned manually
  • Systems requiring a stable, non-tilting transfer point for flat items
  • Need for a single component that replaces multiple rollers or casters

Technical Features

  • 52 mm diameter steel ball for high load capacity and durability
  • Downward mount with two screw holes for secure attachment to a deck
  • Housing made from carbon steel, galvanized steel, chrome-plated steel, or stainless steel (SUS304)
  • Omnidirectional ball movement within a restraining fixture
  • Unit weight of 5.5 kg for deck load and shipping planning

Materials

  • Carbon steel case for general industrial use
  • Galvanized steel case for improved corrosion resistance in humid environments
  • Chrome-plated steel case for wear resistance and a smoother surface
  • Stainless steel (SUS304) case for washdown, food, or chemical exposure

Quality Control

  • Load capacity verified against the 300 kg working load rating
  • Ball rotation checked by hand for free movement in all directions
  • Material grade confirmed against the case option ordered

Customization Options

  • Case material selected between carbon steel, galvanized steel, chrome-plated steel, and stainless steel (SUS304)
  • Ball material is steel and not available in nylon or other materials
  • Other UK Series models available for different load ratings

Use Guide

  • Ensure the load is distributed evenly across the ball to avoid exceeding 300 kg per unit
  • Keep peak and impact loads below the 350 kg maximum load capacity
  • Mount the unit on a flat, rigid deck so the ball sits at the correct height
  • Use stainless steel case where exposure to water, cleaning agents, or corrosive environments is expected
  • Do not use on uneven or soft-bottomed items such as cloth-wrapped loads

Specifications

Model NoUK-51
MountingDownward mount
Load Capacity300 kg
Max Load Capacity350 kg
Weight5.5 kg
Ball Diameter52 mm
Ball MaterialSteel
Case MaterialCarbon steel, galvanized steel, chrome-plated steel, stainless steel (SUS304)
Mount Size102 mm
Dimensions127 x 127 x 98 mm

Manufacturing Process

Step 1

Machining of the case and mounting flange

Step 2

Assembly of the steel ball and support mechanism

Step 3

Drilling and finishing of the two screw holes for mounting

Step 4

Final inspection of load capacity and rotation

Compared With Other Options

Upward ball transfer unitsDownward mount fixes the unit from below, allowing the deck to remain flat, while upward units are mounted from above and may interfere with load height
Standard roller bearingsBall transfer units allow omnidirectional movement, while roller bearings only move in one direction
Casters or swivel wheelsDownward ball transfer units are fixed to a deck and do not roll on the floor, making them suitable for stationary workstations

Downward Ball Transfer Unit UK-51 Questions

What is the load capacity of the UK-51 ball transfer unit?

The working load capacity is 300 kg and the maximum load capacity is 350 kg.

How is the UK-51 mounted?

It is a downward mount unit with two screw holes for attachment to a deck or worktable.

What materials are available for the case?

The case is available in carbon steel, galvanized steel, chrome-plated steel, or stainless steel (SUS304).

Is the ball material available in nylon?

No, the ball is made of steel and not available in nylon or other materials.

What is the weight of the UK-51 unit?

Each UK-51 unit weighs 5.5 kg, which is used for deck load and shipping calculations.

Can I get other load ratings in the UK Series?

Yes, other UK Series models are available for different load ratings—ask for the model that matches your load per unit.

Get a Price for Downward Ball Transfer Unit UK-51

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