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

POM Ball Transfer Unit NL-25B

The NL-25B 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 or deck plates. The unit weighs 120 g and is mounted via a flange with two screw holes for secure attachment to a worktable or conveyor deck.

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

Product Overview

The NL-25B 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 or deck plates. The unit weighs 120 g and is mounted via a flange with two screw holes for secure attachment to a worktable 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 suit surface contact requirements
  • 25.4 mm diameter ball enables smooth omnidirectional movement of flat, rigid items

Application Scenarios

  • Transfer points on a flat deck where trays or rigid containers need to be rotated or repositioned by hand
  • Feeding systems in packaging machinery where flat items must be moved in any direction
  • Processing tables in assembly lines where fixtures are manually adjusted
  • Curved work areas on router tables or band saws requiring 360-degree load transfer
  • Conveyor decks where a single load rating must support consistent flat-surfaced items

Who It Is For

  • Conveyor system integrators building transfer decks with consistent load handling
  • Packaging machinery builders needing reliable omnidirectional movement for flat trays
  • Industrial equipment makers designing worktables with manual repositioning points
  • Assembly line designers integrating manual alignment stations into production flow
  • Material handling equipment builders sourcing 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
  • Transfer points where product must change direction without powered diverters or complex mechanisms
  • Manual repositioning of fixtures or trays that requires excessive force or misalignment
  • Inconsistent mounting methods that lead to loose or misaligned units during operation
  • Lack of a single supplier for ball transfer units with matching load rating, ball material and mounting style

Technical Features

  • 25.4 mm diameter main ball allows smooth movement of flat, rigid objects
  • Flange mount with two screw holes provides secure and repeatable attachment
  • Nylon case reduces weight and resists moisture in dry environments
  • Main ball available in nylon, steel or stainless steel to match surface contact needs
  • Unit weight of 120 g for deck load and shipping planning

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, dry environment applications

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
  • Flange and mounting holes inspected for correct alignment and finish

Customization Options

  • Ball material selected between nylon, steel and stainless steel
  • Case material is fixed as nylon in this model
  • Other NL Series load ratings available where 20 kg is not the right size

Use Guide

  • Divide the load by the number of units in contact to ensure no more than 20 kg per unit under normal use
  • 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 nylon ball where the load surface must not be marked
  • Choose stainless steel ball where the deck is exposed to washdown or corrosive conditions

Specifications

Model NoNL-25B
MountingFlange mount
Load Capacity20 kg
Max Load Capacity25 kg
Weight120 g
Ball Diameter25.4 mm
Ball MaterialNylon, steel or stainless steel
Case MaterialNylon
Mount Diameter68 mm
Dimension86 x 32 mm

Manufacturing Process

Step 1

Machining of the flange and mounting holes

Step 2

Assembly of the main ball and support components

Step 3

Insertion of the ball into the nylon case with proper alignment

Step 4

Final inspection of rotation and load capacity

Step 5

Packing for shipment

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 NL Series unitsThe NL-25B suits 20 kg loads, so lighter applications are better served by a smaller unit with less rolling resistance
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-25B Questions

What load can one NL-25B 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-25B mounted?

It is a flange mount unit with two screw holes, so it is bolted to the deck plate rather than pressed in.

Which ball material should I choose?

Nylon for surfaces that must not be marked, carbon steel for general use, and stainless steel (SUS304) for wet or washdown areas.

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-25B 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-25B

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