Every screw assembly functionally requires a means of supporting the rotational axis of the screw and absorbing the radial and axial force components, e.g. Bearing support utilizing rolling element bearingsSleeve and rolling element bearing combinationStatic screw mounted into a structure with a rotating nut

The BMBF is a virtually a compact version of our standard BMR bearing mount and is dimensionally interchangeable with other “BF Style” bearing mounts found in the industry.

Mounted BallBearing

Note: Dimensions shown for screws without corresponding bearing mounts are for references only. Black Triangles in chart indicate Ball Screws, Yellow triangles are for Metric Ball Screws, Red triangles are for ACME Screws.

2) The BMF series bearing mounts are to be considered as “FIXED” support for column loading and critical speed calculations.

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The BMBF compact series bearing mounts are SIMPLE RADIAL supports that utilize shielded Radial ball bearings for supporting radial load components. These bearing mounts are NOT intended to support axial load components of force. Consult engineering for application assistance if required.

The BMR series bearing mounts are SIMPLE RADIAL supports utilizing shielded Radial ball bearings for supporting radial load components. These bearing mounts are NOT intended to support axial load components of force. Please consult Rockford Ball Screw’s engineering Tech Team for application assistance if required.

Note: Dimensions shown for screws without corresponding bearing mounts are for references only. Black Triangles in chart indicate Ball Screws, Yellow triangles are for Metric Ball Screws, Red triangles are for ACME Screws.

Flange Mounted Bearings

Note: Dimensions shown for screws without corresponding bearing mounts are for references only. Black Triangles in chart indicate Ball Screws, Red triangles are for ACME Screws.

Rockford Ball Screw works closely with our customers to design, engineer, and manufacture custom bearing supports for unique applications. Custom bearing support examples: Tapered roller bearing Thrust bearing arrangements Spherical roller bearings Multiple angular contact bearing stacks Contact Rockford Ball Screw to request a thorough review of your application

Pillow BlockBearing

It is recommended that only axial force vectors are transmitted directly into the axis of the ball screw to obtain optimal and, in some instances, functional performance & longevity. All of our bearing mounts are furnished sealed and greased from the factory.

RBS offers one of the most complete lines of standard bearing mounts in the industry. Mounts can be shipped loose for customer installation or preassembled to the screw at our factory. If shipped loose, please note that the bearings have an interference fit to the shaft and that installation procedures in accordance with those recommended by rolling element bearing manufacturers need to be implemented. Please consult our factory for additional details.

2) The BMBF series bearing mounts are to be considered as “SIMPLE” support for column loading and critical speed calculations.

Can support a combination of radial and axial loads Considered "simple" support Standard end machining available Predrilled for face or foot mounting Contact us for bearing support capacities

Bearingmount types

2) The BM series bearing mounts are to be considered as “SIMPLE” support for column loading and critical speed calculations.

2) The BM series bearing mounts are to be considered as “SIMPLE” support for column loading and critical speed calculations.

The title of this chapter is and may be cited as the "Health Care Consumer Right-to-Know Act of 1998."Acts 1998, ch. 1073, § 1.

Rockford Ball Screw offers standard bearing mounts in five (5) available configurations: Simple radial – R/B/S model BMR Simple angular – R/B/S model BM Fixed angular – R/B/S model BMF Compact Simple angular – R/B/S model BMBK Compact Simple radial – R/B/S model BMBF

Flangebearing

Able to achieve greater comprehensive column strength by decreasing the effective length in the column buckling equations Increases angular dynamic systemic stiffness, thereby increasing the first order harmonic frequency and increasing the critical speed capability Standard end machining Standard bearing support includes a two (2) bearing configuration Available with up to four (4) bearings for more demanding applications; contact us for alternative bearing configurations Predrilled for foot mount only Predrilled for taper pin reaming to suit final assembly location

The BMBK is virtually a compact version of our standard BM bearing mount and is dimensionally interchangeable with other “BK Style” bearing mounts found in the industry.

Overview of BMR: Considered "simple" support Float of the bearing in the housing allows for shaft expansion Standard end machining available Predrilled for face or foot mounting

The title of this chapter is and may be cited as the "Health Care Consumer Right-to-Know Act of 1998."Acts 1998, ch. 1073, § 1.

BMR uses a deep groove radial ball bearing. The BMR mount is well suited for high duty cycle conditions where frictional forces may cause a thermal transfer of energy into the screw assembly. The resulting thermal migration will cause the screw to expand axially and occasionally can lead to catastrophic failure.

Bearing mountsnearby

BearingMount Compound

Heavy dutybearing mounts

The title of this chapter is and may be cited as the "Health Care Consumer Right-to-Know Act of 1998."Acts 1998, ch. 1073, § 1.

2) The BMBK series bearing mounts are to be considered as “SIMPLE” support for column loading and critical speed calculations.

The BM series bearing mounts are SIMPLE supports that utilize a set of Angular Contact ball bearings mounted back to back. These bearing mounts are designed to support radial and axial load components of force. Please consult Rockford Ball Screw’s engineering Tech Team for application assistance if required.

The BMBK compact series bearing mounts are SIMPLE supports that utilize a set of Angular Contact ball bearings mounted face to face. These bearing mounts are designed to support radial and axial load components of force. Consult engineering for application assistance if required.

Note: Dimensions shown for screws without corresponding bearing mounts are for references only. Black Triangles in chart indicate Ball Screws, Red triangles are for ACME Screws.

The BMF series bearing mounts are FIXED RIGID supports that utilize a set of spaced Angular Contact ball bearings. These bearing mounts are designed to support both radial and axial load components of force. Please consult Rockford Ball Screw’s engineering Tech Team for application assistance if required.

Note: Dimensions shown for screws without corresponding bearing mounts are for references only. Black Triangles in chart indicate Ball Screws, Red triangles are for ACME Screws.