Tianhe Conveying Machine Co.,Ltd · Wuxi Jiangsu China
IA IS Series

Bolt Down Disk Mount High Load Ball Transfer Unit IA-25

The IA-25 is a bolt down disk mount high load ball transfer unit with a 25.4 mm diameter steel ball, rated for 130 kg working load and 150 kg maximum load. It is mounted using two screws through a disk base that fits into a clearance hole in a flat deck plate. The unit weighs 320 g and is available with a steel, galvanized steel, chrome plated steel, or stainless steel case. It enables omnidirectional movement of flat, smooth objects such as trays, pallets or sheet metal across a conveyor deck.

Bolt down disk mount high load ball transfer unit IA-25 with steel case and 25.4 mm steel ball
Bolt down disk mount high load ball transfer unit IA-25 with steel case and 25.4 mm steel ball

Product Overview

The IA-25 is a bolt down disk mount high load ball transfer unit with a 25.4 mm diameter steel ball, rated for 130 kg working load and 150 kg maximum load. It is mounted using two screws through a disk base that fits into a clearance hole in a flat deck plate. The unit weighs 320 g and is available with a steel, galvanized steel, chrome plated steel, or stainless steel case. It enables omnidirectional movement of flat, smooth objects such as trays, pallets or sheet metal across a conveyor deck.

Part of the IA IS Series range, used in Warehouse and Distribution Centres.

Key Benefits

  • 130 kg working load and 150 kg maximum load per unit for heavy-duty handling
  • Bolt down disk mount allows secure attachment with two screws and easy removal for maintenance
  • 25.4 mm diameter steel ball provides stable rolling under high static and dynamic loads
  • Steel, galvanized steel, chrome plated steel or stainless steel case options for different environmental conditions
  • Compact 72 x 32 mm size fits into tight deck space without interfering with adjacent units

Application Scenarios

  • Transfer points between two conveyor lines where product must be rotated or repositioned by hand
  • Assembly line workstations where a heavy tray or fixture needs to be moved in any direction
  • Sheet metal handling decks where flat blanks are repositioned before machining
  • Packaging line feed tables where trays are aligned or turned without powered diverters
  • Processing machinery auxiliary tables where tools or components are manually repositioned

Who It Is For

  • Conveyor system integrators building high load transfer points into material handling lines
  • Industrial equipment builders designing workstations with manual repositioning capability
  • Warehouse automation contractors installing transfer decks for heavy trays or pallets
  • Production line engineers needing consistent ball transfer units with known load ratings
  • Industrial distributors stocking ball transfer units by load and mounting type

Problems It Solves

  • Heavy loads that bind or jam when pushed across a fixed deck plate due to high rolling resistance
  • Transfer points where product must change direction without a powered diverter or actuator
  • Need for a reliable, removable mounting method that allows service or replacement without welding
  • Inconsistent performance when using mixed ball transfer units from different suppliers
  • Lack of a single source for high load ball transfer units with matching shaft diameter and mounting pattern

Technical Features

  • Omnidirectional load-bearing spherical ball inside a restraining fixture for 360-degree movement
  • 25.4 mm diameter steel ball with fine machined seat to maintain rolling efficiency under load
  • Bolt down disk mount with two screw holes for secure attachment to deck plate
  • Mounting diameter of 58 mm to fit standard clearance holes in deck plates
  • Unit weight of 320 g for deck load and shipping weight calculations

Materials

  • Carbon steel ball and case for general industrial use
  • Galvanized steel case for increased corrosion resistance in humid environments
  • Chrome plated steel case for improved wear resistance and appearance
  • Stainless steel case for wet, washdown, or corrosive environments

Quality Control

  • Load capacity verified against the 130 kg working load before packing
  • Ball rotation checked by hand for free movement in all directions
  • Material grade confirmed against the case option ordered
  • Mounting holes checked for correct diameter and alignment

Customization Options

  • Case material selected between steel, galvanized steel, chrome plated steel, and stainless steel
  • Ball material is steel only, as specified in the source text
  • Other IA Series models available for different load ratings and mounting styles

Use Guide

  • Divide the total load by the number of units in contact to ensure no more than 130 kg per unit under normal use
  • Keep peak or impact loading below the 150 kg maximum load capacity
  • Mount the unit on a flat deck plate so all balls sit at the same height and roll smoothly
  • Use the galvanized or stainless steel case in wet or corrosive environments
  • Avoid using on surfaces with uneven or soft bottoms such as cloth-wrapped items

Specifications

Model NoIA-25
MountingBolt down disk mount
Load Capacity130 kg
Max Load Capacity150 kg
Weight320 g
Ball Diameter25.4 mm
Ball MaterialSteel
Case MaterialSteel, galvanized steel, chrome plated steel, stainless steel
Mount Diameter58 mm
Dimensions72 x 32 mm

Manufacturing Process

Step 1

Machining of the case and disk base

Step 2

Assembly of the steel ball and support components

Step 3

Drilling and finishing of the two mounting screw holes

Step 4

Load test verification against the 130 kg working load

Step 5

Final inspection and packing

Compared With Other Options

Press fit ball transfer unitsBolt down disk mount allows removal and replacement without damaging the deck, while press fit units are faster to install but harder to service
Lower load rated IA Series unitsThe IA-25 is suited for 130 kg loads, so lighter applications may benefit from a smaller unit with less rolling resistance
Swivel castersBall transfer units are designed for deck-mounted use and cannot be used as floor casters for mobile equipment

Bolt Down Disk Mount High Load Ball Transfer Unit IA-25 Questions

What load can one IA-25 ball transfer unit carry?

The rated load capacity is 130 kg per unit and the maximum load capacity is 150 kg.

How is the IA-25 mounted?

It is a bolt down disk mount unit, secured with two screws through the disk base into the deck plate.

Which case material should I choose?

Choose steel for general use, galvanized steel for humid environments, chrome plated steel for wear resistance, or stainless steel for washdown or corrosive areas.

Is a stainless steel version available?

Yes, the case can be supplied in stainless steel.

How much does the unit weigh?

Each IA-25 weighs 320 g, which is used for deck load and shipping calculations.

Can I get other load ratings in the same series?

Yes, the IA Series includes other load ratings, so ask for the model that matches your load per unit.

Get a Price for Bolt Down Disk Mount High Load Ball Transfer Unit IA-25

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