Advantages of Accu-Clamp™ Precision Products

Stafford Manufacturing produces high-quality rigid shaft couplings, clamping shaft collars, and specialty components with experience dating back half a century. Stafford’s Accu-Clamp ™ products feature both a non-clamping section and a clamping section. The non-clamping section consists of a rigid bore capable of maintaining shape during use without flexing or distorting. The cantilevered clamping section offers flexible, proportionally distributed, non-marring holding power.

Our patented Accu-Clamp ™ products take the benefits of clamping collars to the next level. They feature a unique construction, offering several functional advantages not possible with standard clamping collars. The close-tolerance, highly precise design of these products makes them suitable for a diverse range of applications.

Benefits of the Accu-Clamp™ Precision Product Line

The Accu-Clamp ™ design contains a non-clamping section and a clamping section and is available on a wide range of  Stafford catalog items as well as specialty parts designed to a customer’s unique needs . 

Featuring a unique construction, Stafford’s Accu-Clamp ™ products have a precision machined face that is flat to the shaft within 0.001 TIR. They feature a slotless design, allowing for an uninterrupted outside diameter surface that can be machined, knurled, or profiled to meet the demands of any application. The slotless design also means that the face offers a full 360° surface that can be hardened, ground, flanged, or machined to meet various mounting and tolerance requirements or to be outfitted with features such as:

• Springs
• Mounting holes
• Slotted mounting holes
• Dowel pins
• O-ring grooves for sealing
• Sensor holes
• Face cams

Accu-Clamp™ Precision Product Line

One-Piece and Two-Piece Split ACCU-CLAMP™ Collars

Accu-Clamp™ Collars combine a non-marring clamp with a solid working face that is either fully machineable or hardened and ground. The machineable Accu-Clamp™ Collar can be used as is, or modified by drilling, tapping, threading, turning, knurling, etc. The precision machined face of the clamp is flat to the shaft within 0.001 TIR and has a slotless design, providing a full 360° surface that can be knurled, profiled, or machined to meet various mounting and tolerance requirements. The hardened and ground Accu-Clamp™ Collar provides an ultra-precise bearing surface for applications that require extreme squareness and flatness. 

The one-piece split version is ideal when the user has access to the shaft end. The two-piece split version can be completely disassembled and placed anywhere on a shaft and does not require access to the shaft-end.

ACCU-CLAMP™ Threaded Split Shaft Collars

ACCU-CLAMP™ Threaded Shaft Collars are available in one-piece and two-piece designs to provide a square and rigid method for mounting components on a UNF/UNC threaded shaft. The one-piece design is suitable for applications where there is access to the shaft end. The unique clamp design distributes holding power evenly for superior performance. The two-piece split shaft collar features a clamp-style design that enables easy installation and adjustment without disassembling the shaft. 

The Accu-Clamp™ Threaded Collar combines a non-marring clamp with a solid working face that is fully machineable. It can be used as is, or modified by drilling, tapping, threading, turning, knurling, etc.

ACCU-MOUNT™ Collars

The Accu-Mount™ Collar features one solid, square and flat side, with four component mounting holes, along with a centering hub, and a second side that securely clamps to a shaft. Providing a square and rigid method for mounting sprockets, gears, pulleys, lever arms, and related components, they prevent slippage or wobble and can be easily repositioned on the shaft.

ACCU-FLANGE™ Shaft Mounting Collar and ACCU-FLANGE™ Shaft Collars (English and Metric)

Accu-Flange™ Mounting Collar is a machineable flange collar that can be configured by the user to perform a wide range of applications such as a pulley, cam, or component mounting device. Featuring an integral clamp incorporating a double-split design and relief groove, this clamping flange collar retains its perpendicularity, will not mar expensive shafts, and is easy to adjust. A standard keyway, along with through holes and three tapped holes are incorporated into the design.

The user-machineable Accu-Flange™ Shaft Collar also lets designers rapidly develop a custom solution from a standard product line and then order parts machined to specification in production quantities if required. The flange has no holes and allows users to make their own hole patterns if mounting is required

One-Piece and Two-Piece Split Precision Sleeve Couplings with Keyways (English or Metric)

Stafford’s exclusive Precision Sleeve Coupling features a solid center section that provides a close tolerance fit on ground shafting, includes a keyway, and the Accu-Clamp™ design which incorporates integral self-centering clamping collars at both ends. They are available in one-and two-piece styles in both English and Metric versions. 

To assure precise shaft alignment, it maintains <.001″ TIR concentricity while in use and ensures that the shafts can be mated with zero backlash . It is precision machined, non-marring, easy to adjust, with high clamping power.

Two-Piece Split Precision Sleeve Hex Bore and Square Bore Couplings

Stafford’s Two-Piece Split Precision Sleeve Hex Bore and Square Bore Couplings are designed to provide accurate and reliable transmission of torque between shafts. They feature a solid center section that provides a close tolerance fit on ground shafting, and the Accu-Clamp™ design which incorporates integral self-centering clamping collars at both ends. These couplings feature a two-piece split design, which facilitates easy installation and removal without disturbing the shaft or other components. They are available with both hex bore and square bore configurations to suit your particular shaft requirements. They maintain <.001″ TIR concentricity while in use, ensuring precise shaft alignment and zero backlash.

Precision Sleeve Flange Couplings

The Precision Sleeve Flange coupling allows for mounting components such as gears, motors, brake assemblies etc. to the coupling. The flange includes three through holes and three tapped holes.

It features a solid center section that provides a close tolerance fit on ground shafting, includes a keyway, and the Accu-Clamp™ design which incorporates integral self-centering clamping collars at both ends.

To assure precise shaft alignment, it maintains <.001 TIR concentricity while in use. It is precision machined, non-marring, easy to adjust, with high clamping power.

Flange Adapter Rings

Designed as an add-on component for the Accu-Flange™ Collars and Precision Sleeve Flange Couplings, the adapter rings extend the outer diameter of the flange on the product. Excellent for adding a mounting flange to a pre-existing collar or coupling.

Available Customizations 

Custom solutions, such as modified standard products, offer quick and affordable resolutions to unique problems. Typical modifications can include, but are not limited to:

• Modified Bores: intermediate sizing, keyways, spherical, non-standard threading
• Collar Face Modifications: holes (including through, blind, tapped, counterbored, and more), slots, hubs, and ‘O’ ring grooves
• Modified Outside Diameters: knurling, cam surfaces, flats for mounting or wrenching, notches, pulley grooves, holes
• Custom Configurations for Shaft-Extender Shat Ends: adding pins, tabs, buttons, bumpers, and balancing
• Fully Customized Product Designs: extra heavy duty, extra-large shafts, instrument styles, miniature sizes, multi-screw set collars, mounting features, balancing, hinged flange clamps, and more
• 3D Prototype and Printed Products
• Composite Parts and Molded Urethane
• Special Hardware: nut and bolt combos, integral tightening handle, non-standard screws, pins, bumpers, springs, and more

Special Requests are welcome and handled with expert care. Materials, treatments, holes, slots, and more can be modified easily for customer’s unique needs. Surface treatments, hardening, laser etching,  plating, painting, anodizing, passivating, case hardening, and special materials that can be thru-hardened are all available options with Stafford.

Precise Clamping Shaft Collars and Rigid Shaft Couplings by Stafford Manufacturing

For high-quality clamping shaft collars and rigid couplings of all varieties, our experts at  Stafford Manufacturing have the knowledge and equipment to find a solution to your needs quickly. Contact us to order standard catalog coupling or collaring products. Request a quote for custom products, full designs, and machining needs.