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

POM Ball Transfer Unit NL-25A

The NL-25A is a flange mount ball transfer unit with a 25.4 mm diameter nylon, steel or stainless steel main ball, rated for 20 kg working load and 25 kg maximum load. It is housed in a nylon case and designed for use on flat, smooth surfaces such as trays, decks or worktables. The unit weighs 120 g and is mounted via two screw holes in the flange for secure attachment to a workbench or conveyor deck.

Flange mount ball transfer unit NL-25A with nylon case and 25.4 mm diameter ball
Flange mount ball transfer unit NL-25A with nylon case and 25.4 mm diameter ball

Product Overview

The NL-25A is a flange mount ball transfer unit with a 25.4 mm diameter nylon, steel or stainless steel main ball, rated for 20 kg working load and 25 kg maximum load. It is housed in a nylon case and designed for use on flat, smooth surfaces such as trays, decks or worktables. The unit weighs 120 g and is mounted via two screw holes in the flange for secure attachment to a workbench or conveyor deck.

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

Key Benefits

  • Carries 20 kg per unit in normal service and 25 kg at peak load
  • Flange mount with two screw holes allows secure attachment and easy removal for maintenance
  • Nylon case reduces weight and provides corrosion resistance in dry environments
  • Main ball available in nylon, steel or stainless steel to match surface and load requirements
  • 25.4 mm diameter ball enables smooth movement of flat, rigid items like trays and panels

Application Scenarios

  • Transfer points on a flat deck where trays or rigid components need to be rotated or repositioned by hand
  • Worktables in packaging or assembly lines where parts are manually aligned before processing
  • Feeding systems where flat components are moved between processing stations without powered conveyance
  • Curved work surfaces on band saws or router tables requiring 360-degree movement
  • Auxiliary equipment in processing machinery where a stable, low-friction pivot point is needed

Who It Is For

  • Conveyor system integrators building manual transfer or rotation points
  • Industrial equipment builders designing worktables or feeding stations
  • Packaging line designers needing low-friction movement for flat trays
  • Assembly line builders integrating manual alignment points into production flow
  • Industrial distributors stocking ball transfer units by load and mounting type

Problems It Solves

  • Flat items that jam or drag when pushed across a fixed deck due to lack of omnidirectional movement
  • Manual repositioning of trays or panels that require rotation but no powered transfer
  • Worktables where components must be aligned in multiple directions without powered actuators
  • Systems requiring a stable, fixed pivot point that can be easily maintained or replaced
  • Applications where a lightweight, low-profile transfer unit is needed without floor contact

Technical Features

  • 25.4 mm diameter main ball allows smooth movement of flat, rigid objects
  • Flange mount with two screw holes for secure and repeatable attachment
  • Nylon case provides lightweight construction and resistance to dry environment corrosion
  • Main ball available in nylon, steel or stainless steel to suit surface and load conditions
  • Unit weight of 120 g for deck load and shipping calculations

Materials

  • Nylon main ball for non-marking contact with painted or polished surfaces
  • Carbon steel ball for general industrial use with higher wear resistance
  • Stainless steel ball (SUS304) for wet, washdown or corrosive environments
  • Nylon case for lightweight construction and dry environment use

Quality Control

  • Load capacity verified against the 20 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 is fixed as nylon for this model
  • Other NL Series load ratings available where 20 kg is not the right size

Use Guide

  • Divide the total load by the number of units in contact to ensure no unit exceeds 20 kg working load
  • Keep peak and impact loading below the 25 kg maximum load figure
  • Mount units on a flat, rigid deck plate so all balls sit at the same height
  • Choose the nylon ball where the load surface must not be marked
  • Choose stainless steel ball where the unit is used in wet or washdown areas

Specifications

Model NoNL-25A
MountingFlange mount
Load Capacity20 kg
Max Load Capacity25 kg
Weight120 g
Ball Diameter25.4 mm
Case MaterialNylon
Ball MaterialNylon, steel or stainless steel
Mount Diameter68 mm
Dimensions86 x 32 mm

Manufacturing Process

Step 1

Machining of the flange and case body

Step 2

Assembly of the main ball and support components

Step 3

Drilling and finishing of the mounting holes

Step 4

Load check and visual inspection before packing

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
Higher rated NL Series unitsThe NL-25A suits 20 kg loads, so heavier applications require a larger unit in the same series
Steel case ball transfer unitsThe nylon case reduces weight and is suitable for dry environments, while steel case units offer higher durability in heavy-duty settings

POM Ball Transfer Unit NL-25A Questions

What load can one NL-25A ball transfer unit carry?

The rated load capacity is 20 kg per unit and the maximum load capacity is 25 kg.

How is the NL-25A mounted?

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

Which ball material should I choose?

Nylon for non-marking contact, carbon steel for general use, stainless steel (SUS304) for wet or corrosive environments.

Is a stainless steel version available?

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

How much does the unit weigh?

Each NL-25A weighs 120 g, which is used for deck load and shipping calculations.

Can I get other load ratings in the same series?

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

Get a Price for POM Ball Transfer Unit NL-25A

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