Screw End Conditions

Joyce supplies Ball screws, Acme and Stub Acme machine screws, and Metric (trapezoidal) screws with standard end configurations. Joyce also provides precision end machining to meet customer specifications. Select the end fixity that is needed for the application then view the specific machining details below or use the Screw & Nut Selection Guide to communicate your requirements.

Select the type of screw used in the assembly to view details:

MACHINE SCREW END CONDITIONS BALL SCREW END CONDITIONS METRIC SCREW END CONDITIONS

Product Media

END FIXITY SCREW AND NUT SELECTION GUIDE

Machining for Simple Single Bearing Supports (SB)

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

Machining for Simple Double Bearing Supports (DB)

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

Machining for Fixed Double Bearing Supports (FB)

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