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

Stud Mound Machined Ball Transfer Unit SP-8FL

The SP-8FL is a stud mount machined ball transfer unit with a 8 mm diameter ball, rated for 8 kg working load and 15 kg maximum load. It is designed for light-duty handling of flat, smooth objects like trays and is mounted via a stud with M5 thread. The unit weighs 20 g and is available with steel, stainless steel or nylon balls in steel, galvanized steel, chrome-plated steel or stainless steel cases.

Stud mount machined ball transfer unit SP-8FL with steel ball and steel case, mounted on a workbench
Stud mount machined ball transfer unit SP-8FL with steel ball and steel case, mounted on a workbench

Product Overview

The SP-8FL is a stud mount machined ball transfer unit with a 8 mm diameter ball, rated for 8 kg working load and 15 kg maximum load. It is designed for light-duty handling of flat, smooth objects like trays and is mounted via a stud with M5 thread. The unit weighs 20 g and is available with steel, stainless steel or nylon balls in steel, galvanized steel, chrome-plated steel or stainless steel cases.

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

Key Benefits

  • Carries 8 kg per unit in normal service and 15 kg at peak load
  • Stud mount with M5 thread allows secure attachment to worktables and benches
  • Fine machined ball and housing reduce rolling resistance under light load
  • Steel, stainless steel or nylon ball options suit different surface protection needs
  • Multiple case materials for dry, wet or corrosive environments

Application Scenarios

  • Transfer points on assembly lines where small trays or components need to be repositioned
  • Feeding systems in packaging machinery requiring smooth, omnidirectional movement
  • Processing tables where light parts are rotated or aligned by hand
  • Workbenches with fixed mounting points for consistent ball transfer unit placement
  • Curved work surfaces on router tables or band saws where directional change is needed

Who It Is For

  • Conveyor system integrators building light-duty transfer zones
  • Packaging machinery builders needing small omnidirectional transfer points
  • Industrial equipment makers integrating ball transfer units into workstations
  • Production line designers for small part handling with fixed mounting options

Problems It Solves

  • Light loads that stick or drag when moved across a fixed surface
  • Need for directional change in a small footprint without powered diverters
  • Inconsistent mounting methods that lead to loose or misaligned units
  • Surface damage from hard balls on painted or polished work surfaces
  • Lack of compact, stud-mounted units for tight workbench installations

Technical Features

  • 8 mm diameter ball with fine machined seat for smooth rotation under light load
  • Stud mount with M5 thread for direct screw attachment to worktables
  • Ball material selected from steel, stainless steel or nylon to suit surface contact
  • Case material available in steel, galvanized steel, chrome-plated steel or stainless steel
  • Compact dimensions of 20 mm diameter and 23.1 mm height for space-constrained setups

Materials

  • Steel ball for general light-duty use with standard work surfaces
  • Stainless steel ball for wet or corrosive environments
  • Nylon ball to protect painted, polished or soft surfaces from marking
  • Steel case for standard industrial use
  • Galvanized or chrome-plated steel case for improved corrosion resistance

Quality Control

  • Load capacity verified against the 8 kg working load rating
  • Ball rotation checked by hand for free movement in all directions
  • Material grade confirmed against the ball and case option ordered
  • Stud thread inspected for correct M5 size and engagement

Customization Options

  • Ball material selected between steel, stainless steel and nylon
  • Case material selected between steel, galvanized steel, chrome-plated steel and stainless steel
  • Other SP Series models available for different load ratings or mounting styles

Use Guide

  • Ensure the load per unit does not exceed 8 kg in normal operation
  • Keep peak or impact loading below the 15 kg maximum load limit
  • Mount the unit on a flat, rigid surface so the ball sits level with adjacent units
  • Use nylon ball when the load surface must not be marked or scratched
  • Choose stainless steel case and ball for washdown or high-moisture environments

Specifications

Model NoSP-8FL
MountingStud mount M5
Load Capacity8 kg
Max Load Capacity15 kg
Weight20 g
Ball Diameter8 mm
Ball MaterialSteel, stainless steel, nylon
Case MaterialSteel, galvanized steel, chrome-plated steel, stainless steel
Dimensions20 mm x 23.1 mm

Manufacturing Process

Step 1

Machining of the case and ball seat to precise tolerances

Step 2

Assembly of the ball and stud into the case

Step 3

Drilling and threading of the stud for M5 mounting

Step 4

Final inspection of ball rotation and mounting integrity

Compared With Other Options

Flange mount ball transfer unitsStud mount SP-8FL is faster to install on pre-drilled tables, while flange mount allows easier removal for maintenance
Press fit ball transfer unitsStud mount provides a more secure attachment than press fit, especially under vibration or repeated use
Higher load SP Series unitsThe SP-8FL is designed for 8 kg loads, so heavier applications require a larger model with higher capacity

Stud Mound Machined Ball Transfer Unit SP-8FL Questions

What load can one SP-8FL ball transfer unit carry?

The rated load capacity is 8 kg per unit and the maximum load capacity is 15 kg.

How is the SP-8FL mounted?

It uses a stud mount with M5 thread, so it is screwed directly into a pre-drilled hole in the worktable.

Which ball material should I choose?

Steel for general use, stainless steel for wet or corrosive areas, nylon to protect painted or polished 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-8FL weighs 20 g, which is used for weight and shipping calculations.

Can I get other load ratings in the same series?

Yes, the SP Series includes 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-8FL

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