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

Stud Mound Machined Ball Transfer Unit SP-45FL

The SP-45FL is a stud mount machined ball transfer unit with a 45 mm diameter ball, rated for 400 kg working load and 450 kg maximum load. It is designed to be mounted via a stud onto a worktable or deck plate, allowing flat, smooth objects like trays to be moved and rotated in any direction by hand. The unit weighs 1.15 kg and is available with a steel, stainless steel, or nylon main ball in a steel or galvanized, chrome-plated, or stainless steel case.

Stud mount machined ball transfer unit SP-45FL with steel main ball and steel case
Stud mount machined ball transfer unit SP-45FL with steel main ball and steel case

Product Overview

The SP-45FL is a stud mount machined ball transfer unit with a 45 mm diameter ball, rated for 400 kg working load and 450 kg maximum load. It is designed to be mounted via a stud onto a worktable or deck plate, allowing flat, smooth objects like trays to be moved and rotated in any direction by hand. The unit weighs 1.15 kg and is available with a steel, stainless steel, or nylon main ball in a steel or galvanized, chrome-plated, or stainless steel case.

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

Key Benefits

  • Carries 400 kg per unit in normal service and 450 kg at peak load
  • Stud mount provides secure attachment to a worktable or deck plate with two threaded holes
  • 45 mm diameter ball allows smooth movement of heavy flat items across a surface
  • Steel, stainless steel, or nylon ball options suit different load surface requirements
  • Steel, galvanized, chrome-plated, or stainless steel case options for varied environmental conditions

Application Scenarios

  • Transfer points between two conveyor lines running at right angles in a packaging line
  • Worktables in a processing or assembly system where a heavy tray must be repositioned by hand
  • Feeding systems where flat components need to be aligned or rotated before machining
  • Curved work surfaces on band saws or router tables requiring omnidirectional movement
  • Auxiliary equipment in packaging machinery where trays are moved between stations

Who It Is For

  • Conveyor system integrators building high-load transfer points into automated lines
  • Industrial equipment builders designing worktables and processing stations
  • Packaging machinery manufacturers needing reliable ball transfer units for tray handling
  • Assembly line builders requiring manual repositioning of heavy flat components
  • Industrial distributors stocking ball transfer units by load rating and mounting type

Problems It Solves

  • Heavy flat items that jam or drag when pushed across a fixed deck plate
  • Transfer points where product must change direction without powered diverters
  • Worktables where a load must be rotated or repositioned by hand under high load
  • Systems requiring consistent load capacity across multiple units without mixing suppliers
  • Work surfaces where surface marking from metal balls must be avoided

Technical Features

  • 45 mm diameter ball for high load capacity and smooth omnidirectional movement
  • Stud mount with two threaded holes for secure attachment to a worktable
  • Fine machined ball seat and ball housing to maintain consistent rolling effort
  • Ball and case materials selected independently to suit the application environment
  • Overall dimensions of 62 mm diameter and 99 mm height for deck space planning

Materials

  • Carbon steel ball and case for general industrial use
  • Stainless steel ball and case for wet, washdown, or corrosive environments
  • Nylon ball for non-marking contact with painted, polished, or sensitive surfaces
  • Galvanized or chrome-plated case for improved corrosion resistance in moderate environments

Quality Control

  • Load capacity tested against the 400 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
  • Stud mount threads inspected for correct size and depth

Customization Options

  • Ball material selected between steel, stainless steel, and nylon
  • Case material selected between steel & galvanized, steel & chrome plating, and stainless steel
  • Other SP Series load ratings available where 400 kg is not the right size

Use Guide

  • Divide the total load by the number of units in contact to ensure no unit exceeds 400 kg working load
  • Keep peak and impact loading below the 450 kg maximum load figure
  • Mount the unit 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 and case where the deck is exposed to moisture or cleaning

Specifications

Model NoSP-45FL
MountingStud mount
Load Capacity400 kg
Max Load Capacity450 kg
Weight1.15 kg
Ball Diameter45 mm
Mount DiameterM20 mm
Ball MaterialSteel, stainless steel, nylon
Case MaterialSteel & galvanized, steel & chrome plating, stainless steel
Dimensions62 mm diameter x 99 mm height

Manufacturing Process

Step 1

Machining of the case and ball seat to precise dimensions

Step 2

Assembly of the ball and support components with proper clearance

Step 3

Drilling and threading of the stud mount for secure attachment

Step 4

Final inspection of ball rotation and load capacity before packing

Compared With Other Options

Flange mount ball transfer unitsStud mount allows direct attachment to a worktable with threaded holes, while flange mount requires a separate flange and bolted connection
Press fit ball transfer unitsStud mount is more secure and can be removed for maintenance, while press fit units are faster to install but harder to replace
Lower rated SP Series unitsThe SP-45FL suits 400 kg loads, so lighter applications are better served by a smaller unit with lower rolling resistance

Stud Mound Machined Ball Transfer Unit SP-45FL Questions

What load can one SP-45FL ball transfer unit carry?

The rated load capacity is 400 kg per unit and the maximum load capacity is 450 kg.

How is the SP-45FL mounted?

It is a stud mount unit, so it is attached via two threaded holes in the stud to a worktable or deck plate.

Which ball material should I choose?

Steel for general use, stainless steel for wet or corrosive areas, nylon for non-marking contact with sensitive surfaces.

Is a stainless steel version available?

Yes, both the ball and the case can be supplied in stainless steel.

How much does the unit weigh?

Each SP-45FL weighs 1.15 kg, which is used for deck load and shipping calculations.

Can I get other load ratings in the same series?

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

Get a Price for Stud Mound Machined Ball Transfer Unit SP-45FL

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