Accu-Clamp Precision Products

Since 1975, Stafford Manufacturing has been a leading manufacturer and distributor of high quality rigid shaft couplings, shaft collars, and specialty components for use in a variety of motion control, transmission, and automation systems. In addition, we specialize in the design and fabrication of components for use in a variety of OEM and MRO applications. Our focus on innovation allows us to develop new solutions to meet the evolving challenges of industrial and automation technology, including specialty shaft collars and couplings.

Shaft collars are a critical aspect of nearly any complex mechanical design. They are used to impede, direct, and secure components in a variety of motion control equipment. Although the original shaft collar design was a single ring with a screw, numerous modifications have been made in order to meet the demanding needs of more complex systems.

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.

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Accu-Clamp ™ Precision Products Accu Clamp

Types of Accu-Clamp Precision Products

Our patented Accu-Clamp ™ products 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.

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 hardened and ground Accu-Clamp™ Collar provides an ultra-precise bearing surface for applications that require extreme squareness and flatness.

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 also 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

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Accu-Clamp™ Collars Accu-Clamp™ Collars
One-Piece Split Accu-Clamp™ Collar

This integral clamp provides a high-strength, non-marring hold.

Stocked in: 1117 Steel

Offered Styles: Machineable: Face can be modified by the user
Hardened and Ground: Has a precise bearing surface that is extremely square and flat.

One-Piece Split Accu-Clamrp™ Collar
Two-Piece Split Accu-Clamp™ Collar

Two-Piece Split Accu-Clamp™ Collars can be completely disassembled and placed anywhere on a shaft.

Material:
1117 Steel

Offered Styles:
Machineable: Face can be modified by the user

Two-Piece Split Accu-Clamp™ Collar

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.

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Accu-Mount™ Collars Accu-Mount™ Collars

Accu-Flange™ Shaft Collars

Accu-Flange™ Collars, Accu-Flange™ Mounting Collars, and Metric Accu-Flange™ Shaft Mounting Collars are machineable flange collars 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.

The user-machineable collars also let designers rapidly develop a custom solution from a standard product line and then order parts machined to specification in production quantities if required.

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Accu-Flange™ Shaft Collars Accu-Flange™ Shaft Collars
Accu-Flange™ Collars

Highlights

  • Machineable to user specifications
  • Applications include pulleys, cams and for mounting components
  • Integral clamp provides high strength, non-marring hold
  • Includes standard keyway

Material
Steel
Stainless Steel
Aluminum

Accu-Flange™ Shaft Collars (mounting + metric)
Accu-Flange™ Mounting Collars

In these mounting collars, a standard keyway is incorporated into the design.

Highlights

  • Machineable to user specifications
  • Applications include pulleys, cams and for mounting components
  • Ready to mount with three through holes and three tapped holes
  • Integral clamp provides high strength, non-marring hold
  • Includes standard keyway

Material
Steel
Stainless Steel
Aluminum

Offered Styles
Metric or inches

Flanged Shaft Collars and other Mounting Components

Accu-Clamp™ Threaded Shaft Collar

The Accu-Clamp™ Threaded Collar provides a square and rigid method for mounting components on standard UNF/UNC threaded shafts. It 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.

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Accu-Clamp™ Threaded  Shaft Collar Accu-Clamp™ Threaded  Shaft Collar
Accu-Clamp™ Threaded One-Piece Shaft Collar

Highlights

  • Provides a square and rigid method for mounting components on threaded shafts
  • Fully machineable face on one side for drilling, tapping, etc.
  • Integral clamp provides high strength, non-marring hold

Material
1117 Steel

Accu-Flange™ Collars
Accu-Clamp™ Threaded Two-Piece Shaft Collar

Highlights

  • Provides a square and rigid method for mounting components on threaded shafts
  • Fully machineable face on one side for drilling, tapping, etc.
  • Integral clamp provides high strength, non-marring hold
  • The 2-piece clamp-type design can be completely disassembled and placed anywhere on a shaft

Material
1117 Steel

Accu-Flange™ Mounting Collars

Precision Sleeve Couplings with Keyways

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.

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

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Precision Sleeve Couplings with Keyways Precision Sleeve Couplings with Keyways
One-Piece Split Precision Sleeve Couplings

These couplings mate two shafts with precise shaft alignment and zero backlash.

Highlights

  • Axial runout less than .001″ TIR
  • Includes standard keyway
  • Smooth bore protects shafts from damage

Material
Steel

One-Piece Split
Metric One-Piece Split Precision Sleeve Couplings

These couplings mate two shafts with precise shaft alignment and zero backlash.

Highlights

  • Fully metric, including clamp screws
  • Axial runout less than .001″ TIR
  • Includes standard keyway
  • Smooth bore protects shafts from damage

Material
Steel

Metric One-Piece Split
Two-Piece Split Precision Sleeve Couplings

The two-piece split coupling comes completely apart to allow the most convenient assembly and adjustment. It is precision machined, non-marring, easy to adjust, with high clamping power.

  • Assure precise shaft alignment
  • Axial runout less than .001″ TIR
  • Two pieces for convenient assembly and adjustment
  • Includes standard keyway
  • Smooth bore protects shafts from damage

Material
Steel

Two-Piece Split
Metric Two-Piece Split Precision Sleeve Couplings

The metric two-piece split coupling comes completely apart to allow the most convenient assembly and adjustment. It is precision machined, non-marring, easy to adjust, with high clamping power.

  • Fully metric, including clamp screws
  • Assure precise shaft alignment
  • Axial runout less than .001″ TIR
  • Two pieces for convenient assembly and adjustment
  • Includes standard keyway
  • Smooth bore protects shafts from damage

Material
Steel

Metric Two-Piece Split

Two-Piece Split Precision Sleeve Hex Bore Couplings

Stafford’s exclusive Precision Sleeve Hex Bore Coupling is used on hexagonal shafts. The Accu-Clamp™ design features a solid center section that provides a close tolerance fit on ground shafting and incorporates integral self-centering clamping collars at both ends. To assure precise shaft alignment, it maintains <.001″ TIR concentricity while in use.

This two-piece coupling comes completely apart to allow the most convenient assembly and adjustment. It is precision machined, non-marring, easy to adjust, provides precise shaft alignment, and has high clamping power.

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

Two-Piece Split Precision Sleeve Square Bore Couplings

Stafford’s exclusive Precision Sleeve Square Bore Coupling is used on square shafts. The Accu-Clamp™ design features a solid center section that provides a close tolerance fit on ground shafting and incorporates integral self-centering clamping collars at both ends. To assure precise shaft alignment, it maintains <.001″ TIR concentricity while in use.

This two-piece coupling comes completely apart to allow the most convenient assembly and adjustment. It is precision machined, non-marring, easy to adjust, and has high clamping power.

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

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.

Some of the features include:

  • Solid center section that provides a close tolerance fit on ground shafting
  • Standard keyway
  • Integral self-centering clamping collars at both ends
  • Smooth bore that protects shafts from damage
  • <.001 TIR concentricity while in use
  • Precision machined
  • Non-marring
  • Easy to adjust
  • High clamping power
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Precision Sleeve Flange Couplings Precision Sleeve Flange Couplings

Flange Adapter Rings

Flange Adapter Rings are designed to be used with two other Stafford products – Accu-Flange™ Collars and Precision Sleeve Flange Couplings – to extend the OD of the flange on the collar or coupling. They can be bolted and/or welded to the component mount, featuring three OD options for each bore size and three adapter holes for mounting.

These products are available in 1018 steel, stainless steel, and aluminum.

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Flange Adapter Rings Flange Adapter Rings

Accu-Clamp™ Features

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.

Featuring a unique construction, our Accu-Clamp ™ products have a precision machined face that is flat to the shaft within 0.001 TIR. They also 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 hole
  • Face cams

Accu-Clamp™ Applications

The versatility and durability of these products makes them ideal for use in a wide range of industries and applications. Applications that benefit from our Accu-Clamp technology include:

  • Mounts for precision components
  • Speed and position sensors
  • O-rings and other sealing components
  • Sheaves, pulleys, gears, and cams
  • Oil rings

Quality Accu-Clamp™ Products by Stafford Manufacturing

As an industry leader of custom shaft collar and coupling solutions, Stafford is pleased to provide a full line of highly customizable Accu-Clamp ™ products for use in everything from conveying and food processing equipment to industrial automation. We offer custom precision-machined modifications for a wide range of standard and specialty products.

With nearly 50 years of experience we have the knowledge, equipment, and inventory necessary to ensure that you have the perfect solution for your motion control application. To learn more about our Accu-Clamp ™ products, contact the experts at Stafford or request a quote today.

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