Acme and Stub Acme Machine Screw Bearing Blocks

Featured Product from Joyce/Dayton Corp.

More Info Email Supplier Request A Quote

Bearing Blocks
Every screw assembly requires a means of supporting the rotational axis of the screw and absorbing radial and axial force components. Joyce provides a line of bearing block supports for screw and nut assemblies. Standard supports are available for Ball screws, Acme and Stub Acme machine screws, and Metric (trapezoidal) screws. Our bearing mounts are sealed and greased at the factory. They are suited for high duty cycle conditions. Scroll down to read more about bearing blocks.*

Select the type of screw used in the assembly to view details:
Machine Screw Bearing Blocks
Ball Screw Bearing Blocks
Metric Screw Bearing Blocks

*Note: Bearing blocks used in screw & nut assemblies may not be rated for the same static load as the screws or nuts with which they are used. Contact Joyce/Dayton to verify that bearing blocks are adequately sized for the required loads

Simple Single Bearing Supports (SB) - a deep groove radial ball bearing.

  • Simple radial supports
  • Designed for radial loads only
  • Float of bearing in the housing allows for thermal shaft expansion
  • Predrilled for face or foot mounting


Simple Double Bearing Supports (DB) - a set of angular contact bearings.

  • Simple support
  • Designed to support a combination of radial and axial loads
  • Predrilled for face or foot mounting
  • Industry standard for interchangeability


Fixed Double Bearing Supports (FB) - a set of spaced angular contact bearings.Fixed bearing supports increase angular dynamic system stiffness.

  • Allow greater compressive column strength
  • Increase effective length of column and critical speed capability of system
  • Designed to support a combination of radial and axial loads
  • Predrilled for foot mounting
  • Predrilled taper pin reaming to suit final assembly


Contact Joyce application engineers with your requirements today. We have experience specifying jacks and systems for cold temperature applications. Our experts can customize jacks and systems to meet your specific requirements.

Sign up for the Joyce/Dayton E-Newsletter

Watch our >>>Videos

Horsepower Calculations

Joyce/Dayton Corp
A Proven Leader
Joyce/Dayton Corp., the premier manufacturer of Screw Jacks, Actuators, and Lifting Equipment in North America, has remained in continuous operation since it was established in 1873. Our long history of designing and manufacturing high quality products is unparalleled in the industry. Joyce Engineers are tenured and have the expertise needed to develop innovative solutions for today’s customers.

A Giant in the Industry
Joyce/Dayton screw jacks and electric cylinders are routinely used to:

  • Maintain adjustment of large rolls in steel mill operations
  • Adjust conveyor height in machinery
  • Move and support huge structural elements used in municipal projects
  • Operate maintenance and material lifts for many industries
  • Stabilize and deploy equipment used in heavy mining and drilling operations
  • Operate gantry systems for dockside and other operations
  • Provide linear motion solutions in industrial applications worldwide 


Joyce Offers Much More
Joyce/Dayton offers more than a catalog of standard products. Fundamental to our longevity and success in business is the commitment Joyce/Dayton makes to quality and service. Choose Joyce for quality industrial screw jacks, actuators and systems. Experience our unmatched Customer Service Support.

It’s easy to do business with Joyce!

JAX® Online — The Fastest Way to Your Ideal System
Specify the right jacks and components for your ideal lifting and linear motion systems with our free, easy-to-use JAX Online software. Use JAX Online to configure and download 2/D and 3D models, manage project files, generate a bill of materials in real-time, and request product quotes.
Create an account and start your design today!

JAX Online is easy to use – see for yourself!

Quick Start Jack Selection - Watch Now
Quick Start System Building - Watch Now