Product Overview

Our Product Catalog

The Stafford Manufacturing Corp. standard product offering consists of over 4000 shaft collars, rigid shaft couplings and specialty mechanical components.

They’re used in a wide range of industrial and consumer OEM and MRO applications, including:

  • Power transmission
  • Linear motion
  • Motion control
  • Fixturing
  • Material handling
  • Display
  • Automation
  • Assembly
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Product Families

The outline below is designed to provide a guide to the function and features of the products in the families. You can view more information by clicking on the family category links below.

Round Bore Shaft Collars

Round bore shaft collars are used in mechanical assemblies as locators, stops, bearing faces, spacers, and mounting components. They are clamping devices for power transmission, motion control, and mounting applications.

They can be used on shafts, tubing, pipe, and split hubs in both rotary and non-rotary applications. Learn more about our round bore shaft collars.

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Round Bore Shaft Collars
Standard Round Bore Shaft Collars
Set Screw Shaft Collars

Set screw collars are the simplest and most commonly used type of shaft collar. The clamping force is exerted by tightening a screw that is directly pressed onto the shaft. They are a low-cost solution, but a potential disadvantage is that they might damage the shaft.

Set screw shaft collars are best on soft shafts where frequent adjustment is not required and where there is a low axial load—the force along the shaft that would cause the collar to lose its hold.

Clamp-Type or Split Collars

These collars retain their position through the tightening of one or more clamp screws that do not come into contact with the shaft, tube, or pipe. They offer superior clamping force compared to set screw styles on thin-walled tubing and hard or soft shafts. Split collars are easy to adjust and do not mar shafts.

Functions

  • Similar to a shaft’s shoulder when it is clamped into place. However, the split collar is less expensive than machining a shoulder and can be easily relocated.
  • As a clamping mechanism over a split hub. The clamping power is transmitted from the collar to the hub-shaft interface. A common method of connecting components to a shaft is the self-centering split-hub design.
  • As a torque-transmitting component. Split collars can transmit torque when other torque-inducing components (such as lever arms, pulleys, or sprockets) are attached to the collars.

About Clamp-Type Shaft Collar and Rigid Coupling Styles

  • High Strength – our most popular style, where the heads of the clamping screw are recessed.
  • Low Profile – this style has a smaller outside diameter but the screw head does protrude slightly beyond the outside diameter.
  • Heavy Duty – have larger clamping screws and a greater outside diameter for superior holding capacity.
  1. Heavy Duty shaft collars have twice the Torsional Holding Power of standard collars
  2. Heavy Duty Rigid Couplings have three times the Torsional Holding Power of regular couplings. They are also longer and have more screws than regular couplings.

For more information, visit our Collar and Coupling Styles page.

One-Piece Split Clamp-Type Collars

One-piece split clamp-type collars have a single screw and do not come apart. They are used when there is access to the end of the shaft, whether on hard or soft standard round shafts, thin wall tubes, or over a split hub. This type of collar offers more axial holding power compared to set screw types. One-piece split clamp-type collars are available in the following materials:

  • Steel
  • Stainless steel
  • Aluminum
  • Nylon
  • Delrin

 

Other features and benefits of this collar type include:

  • Precision machined
  • Non-marring
  • Easy to adjust
  • High clamping power
  • Available in three different styles: high strength, low profile, and heavy duty

Two-Piece Split Clamp-Type Collars

These collars have two screws and can be disassembled. They function in applications where there is no access to the end of the shaft, which must be 0.015” or more under nominal diameter. Compared to one-piece split clamp-type collars, two-piece split clamp-type collars offer about 10% more holding power.

Hinge-Type Shaft Collars

Stafford’s exclusive hinge-type shaft collars are ideal for applications requiring fast operation, such as hostile conditions or applications with limited space and time. They combine the flexibility of a two-piece collar with the simplicity of a one-piece collar. Other features and benefits include:

  • Versatility: They can be assembled as a single unit anywhere on the shaft, eliminating loose parts that could be dropped or lost.
  • Compatibility: Hinge-type collars are suitable for soft or hard standard round shafts, thin wall tubes, or over a split hub.
Round Bore Mounting Collars

Round bore mounting collars are off-the-shelf products with built-in component mounting capability. These time-savers are one of many problem-solving components that are unique to Stafford. Round bore mounting collars eliminate the need for costly modifications to standard parts and have a wide range of maintenance, repair, and operation (MRO) applications.

Specialty Round Bore Shaft Collars

Specialty round bore shaft collars are useful in situations where specific functional demands must be met. Unique to Stafford, they are one of our problem-solving components and can be applied in many MRO settings.

Rigid Shaft Couplings & Shaft Adapters

Rigid shaft couplings connect or “couple” two shafts that are in alignment with one another. By clamping the two shafts together, these mechanical components allow rotary motion to be transferred from one rotating shaft (the driving shaft) to the other (the driven shaft).

This simple and robust design enables the coupling to transmit more power than comparable flexible shaft couplings. Given these considerations, industry professionals typically use rigid shaft couplings only in applications where the shafts are coaxial and/or pre-positioned in precise alignment with each other.

Stafford Manufacturing manufactures and distributes a vast selection of rigid shaft couplings for consumer and industrial products. Our couplings can be found in motion control, automation, power transmission, and other OEM and MRO applications.

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Rigid Shaft Couplings & Shaft Adapters
Standard Rigid Shaft Couplings

Standard rigid couplings clamp onto and connect two aligned shafts, allowing two shafts to function as one. They connect shafts of varying diameters, with and without keyways. These non-marring couplings outperform set screw type couplings in terms of holding power, making them ideal for:

  • Overhung or unsupported shafts
  • Mixer paddles
  • Shaft extensions

One-Piece Split Clamp-Type Couplings

These couplings can handle more torque than set screw couplings and are used where there is access to the end of the shaft. They can join shafts of the same or different diameters, with or without keyways. Other benefits and features include:

  • Available with stepped or smooth straight-through bores, which protect the shaft from damage
  • Zero backlash
  • Available in three styles: heavy duty, high strength, and low profile

Two-Piece Split Clamp-Type Couplings

The two-piece clamp-type coupling lets two aligned shafts function as one. They are used where there is no access to the end of the shafts, which can be of different diameters and with or without keyways. Made of two pieces, two-piece rigid couplings make assembly and adjustment simple. Other features and benefits are:

  • No backlash
  • Smooth bore protects the shaft from damage
  • Straight-through or stepped bores are available
  • Available in high-strength, low-profile, and heavy-duty designs

Three-Piece Split Clamp-Type Couplings

The three-piece split clamp-type coupling is designed to allow two aligned shafts to function as one. It can be fixed to one shaft while the other is moved or changed, or it can be completely disassembled for convenient assembly and adjustment. Other features include:

  • Smooth straight-through bores protect the shaft from damage 
  • Precisely machined
  • Non-marring
  • High clamping power
  • Can be installed anywhere on the shaft
  • No backlash

Precision Sleeve Coupling

Our precision sleeve coupling with Accu-Clamp™ design is a Stafford-exclusive product that includes integral self-centering clamping collars at both ends, a solid center section that offers a close tolerance fit on ground shafting, and a keyway.

To guarantee accurate shaft alignment, it maintains <0.001” TIR concentricity while in use. It is precisely machined, non-marring, and has a high clamping power. The precision sleeve coupling also:

  • Connects two shafts with no backlash.
  • Features a smooth bore that protects shafts from damage.
Shaft Adapter Couplings

Shaft adapter couplings are members of the coupling family, but their output end is a male shaft.

They can either be used as-is to lengthen/fix an existing shaft or be machined to create a completely different output shaft configuration (in diameter and shape). They come in step-up and step-down styles, with or without keyways.

Shaft adapters are precision machined, non-marring, easy to adjust, and have a high clamping power for use on standard hardened round shafts.

Specialty Shaft Couplings

Stafford offers a variety of rigid couplings, including styles designed specifically for:

  • Machinability
  • Extra torsional holding power
  • Precision alignment

Threaded Bore Shaft Collars

Threaded shaft collars are ideal for a specific threaded shaft or screw, such as Unified National Fine (UNF), Unified National Coarse (UNC), and Acme threads. They clamp in place for secure positioning and will not damage the threads. Check out our product catalog of threaded shaft collars. 

Threaded shaft collars are commonly used as a stop to position components or to prevent specific parts from running along a shaft or line. Its improved grip makes it ideal for applications requiring extremely precise location and preload settings.

With one-piece, two-piece, and hinged clamp styles, threaded bore shaft collars are easy to assemble and adjust. Specialty collars include Accu-Clamp™threaded bore and threaded hub collars.

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Threaded Bore Shaft Collars
UNF/UNC Threaded Bore Shaft Collars

We manufacture our UNF/UNC threaded bore shaft collars per UNF (fine thread) or UNC (coarse thread) standards. Our designs are available in steel and stainless steel materials, as well as high strength and low profile styles.

One-Piece Split Clamp

UNF/UNC one-piece threaded collars are utilized on standard UNF/UNC threaded shafts. They offer greater holding power compared to set screw type collars. They are also:

  • Precision machined
  • Non-marring
  • Easy to adjust

Two-Piece Split Clamp

UNF/UNC two-piece threaded collars are applied to standard threaded shafts, either UNF (fine thread) or UNC (coarse thread). They can be completely disassembled and installed anywhere on the shaft. Other benefits include:

  • Precision machined
  • Non-marring
  • Higher clamping power compared to set screw type collars
  • Available in high strength and low profile designs

Hinge

Stafford’s exclusive hinge shaft collars are ideal for situations requiring rapid operation, such as hostile environments or applications with limited space and time. Hinge shaft collars are two-piece collars that can be used on standard round shafts, hard or soft, as well as thin wall tubes or over a split hub.

They are simple to assemble, reposition, and disassemble, with no loose screws or fumbling. Hinge shaft collars offer the same axial holding power as standard collars. They have a smooth bore that won’t mar shafts. Other features include:

  • Compatible with standard UNF/UNC threaded shafts
  • Can be positioned anywhere on the shaft
  • Superior to set screw collars in terms of holding power
  • Available in high strength and low profile designs
ACME Threaded Collars

ACME Threaded Collars are used on standard ACME threaded shafts with an option for either left or right hand thread. They are available in steel and provide exceptional holding power.

One-Piece Split Clamp

The One-Piece Split Clamp offers superior holding power over set screw collars. It is ideal for applications such as stroke limiting, stops, and height and spring tension.

Two-Piece Split Clamp

The 2-Piece Clamp-Type design allows the collars to be completely disassembled and placed anywhere on a shaft to simplify installation and relocation of the collar.

Accu-Clamp™ Precision Products

Stafford’s Accu-Clamp™ products have a non-clamping section as well as a clamping section. The non-clamping section is made up of a rigid bore that can maintain its shape without flexing or distorting during use. The flexible, cantilevered clamping section provides non-marring, proportionally distributed holding power.

Our Accu-Clamp™ products have a special design with a precision machined face that lines up with the shaft within 0.001 TIR. Its slotless design allows for a continuous outside diameter surface that can be machined, profiled, or knurled to meet the needs of any application. Because the face is slotless, it provides a complete 360° surface that can be ground, hardened, machined, or flanged to meet various mounting and tolerance requirements, as well as be outfitted with other features. 

Accu-Clamp™ products are ideal for use in applications that require easily machined and hardened steel products.

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Accu-Clamp™ Precision Products

Flanged Devices and Other Mounting Components

Stafford Manufacturing manufactures and distributes a diverse range of products for use in power transmission, motion control, automation, and other OEM and MRO applications. We offer a variety of shaft collars, including flanged shaft collars—one of our main product categories.

In comparison to other flanged shaft collars on the market, ours feature:

  • More secure attachment options without the need for welding
  • Reduced risk of shaft damage
  • More customizability for specific user requirements
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Flanged Devices and Other Mounting Components
Precision Sleeve Flange Couplings (One-Piece, Clamp-Type)

The precision sleeve flange coupling allows for the attachment of components such as gears, motors, and brake assemblies. There are three tapped holes and three through holes on the flange.

It has a solid center section for a close tolerance fit on ground shafting, a keyway, and the Accu-Clamp™ design with integral self-centering clamping collars at each end. It maintains <0.001 TIR concentricity while in use to ensure precise shaft alignment. Other features include:

  • Precision machined
  • Non-marring
  • High clamping power
  • Smooth bore that protects the shaft from damage
Accu-Flange™ Shaft Mounting Collars

The Accu-Flange™ mounting collar is a machinable flange collar that can be configured to function as a cam, pulley, or component mounting device. This clamping flange collar has an integrated clamp with a double-split design and relief groove. It is simple to adjust, maintains perpendicularity, and won’t damage expensive shafts. The design incorporates a standard keyway, through holes, and three tapped holes.

The user-machinable Accu-Flange™ mounting collar also enables designers to quickly develop a custom solution from a standard product line and then order parts machined to specification in production volumes if necessary.

Accu-Flange™ Shaft Collars

The Accu-Flange™ shaft collar is a machinable flange collar that can be configured to perform as a cam, pulley, or component mounting device. This clamping flange collar has an integrated clamp with a double-split design and relief groove. It is simple to adjust, maintains perpendicularity, and won’t damage expensive shafts. The design incorporates a standard keyway.

The user-machinable Accu-Flange™ collar also enables designers to quickly develop a custom solution from a standard product line and then order parts machined to specification in production quantities if necessary.

Flanged Shaft Mounts

Shaft mounts are used in a variety of applications, including conveyors, packaging equipment, lab equipment, and renewable energy systems. The two-piece design allows you to quickly remove the support’s top for easy access to the shaft.

Stafford shaft mounts are available in ¼” to 2” inner diameter (ID) sizes and are made of 1117 steel. They are also available in stainless steel or with keyways on special order. Clamping screws are included with bore sizes 1” and larger.

Square and Hex Bore Collars & Couplings

The square and hexagonal bore shapes provide a standard solution to specialized problems, such as those found in food processing, agricultural, and conveyor systems.

Our Stafford-exclusive square and hexagonal bore shaft collars and couplings are intended to fit square and hexagonal shafts. Clients can also choose from a wide range of standard bore sizes based on their applications. These one-piece or two-piece split clamp-style collars can be installed anywhere on a shaft, and the smooth bore protects the shaft from marring.

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Square and Hex Bore Collars & Couplings
Square Bore Shaft Collars and Couplings

Two-Piece Split Clamp Collar

These collars are only available from Stafford, and they go on standard square shafts. They can be drilled, welded, tapped, or otherwise modified to serve as mounts for other components.

Two-piece split clamp collars can be entirely dismantled and reassembled anywhere on a square shaft. Other features include:

  • High clamping power
  • Precision machined
  • Non-marring
  • Easy to adjust
  • Shafts are protected from damage by a smooth bore
  • Superior to set screw collars in terms of holding power

Mounting Two-Piece Stackable Collar

Square bore shaft mounting collars are intended for use with structural tubing or standard square shafts. They can be fully disassembled and installed anywhere on the shaft. 

With a two-piece construction, the collar has flats on the outside surfaces that are drilled and tapped for attachment to other components or each other. A countersunk hole is also included for mounting to any surface. These collars stack well, are secure, and are simple to open and adjust.

The standard stackable model has flats on both sides for stacking. When no further stacking is required, the stackable (cap) version has a single flat to leave a finished outside surface. Other features include:

  • Precision machined
  • Non-marring
  • Strong clamping force
  • Comes with a mounting screw

 

Mounting two-piece stackable collars are stocked in:

  • Aluminum
  • Steel
  • Stainless steel

Two-Piece Split Precision Sleeve Square Bore Couplings

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316 SS Two-Piece Square Bore Clamp Coupling

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Hex Bore Shaft Collars and Couplings

One Piece Split Clamp Collar

These collars, which are only available from Stafford, are designed to fit standard hexagonal shafts. They can be tapped, drilled, welded, or otherwise modified to serve as mounts for other components. Other features include:

  • Precision machined
  • Non-marring
  • High clamping force
  • Shafts are protected from damage by a smooth bore
  • Superior to set screw collars in terms of holding power

 

One-piece hex bore shaft collars are stocked in:

  • Steel
  • Stainless steel

Two-Piece Split Clamp Collar

These collars, which are only available from Stafford, are designed to fit standard hexagonal shafts. They can be drilled, tapped, or welded to serve as mounts for other components.

Two-piece split clamp collars can be entirely disassembled and reassembled on any part of a hex shaft. They have high clamping power, are precision machined, non-marring, and easy to adjust. Other features include:

  • High clamping power
  • Precision machined
  • Non-marring
  • Easy to adjust
  • Shafts are protected from damage by a smooth bore
  • Superior to set screw collars in terms of holding power

 

Two-piece split clamp hex bore shaft collars are stocked in:

  • Steel
  • Stainless steel

Two-Piece Split Precision Sleeve Hex Bore Couplings

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316 SS Two-Piece Hex Bore Clamp Couplings

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Metric Products & Components

Metric products and components are classified separately according to convention. They have the same shape and function as their counterparts measured in inches but are fully metric in every way, including hardware.

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Metric Products & Components
Metric Standard Round Bore Shaft Collars

Metric round bore shaft collars come in a variety of configurations, such as one-piece, two-piece, set screw, and other designs. Below you’ll find more information about our most popular products.

One-Piece Split Clamp

Stafford metric shaft collars are completely metric, including the clamping screws. One-piece clamp-type shaft collars are intended to be used on standard round shafts, both hard and soft, as well as thin wall tubes or over a split hub. Other features include:

  • Precision machined
  • Strong clamping force
  • Smooth bores that protect the shaft from marring
  • Better holding power than set screw collars 

 

Metric one-piece split clamp collars are stocked in:

  • Steel
  • Stainless steel

Two-Piece Split Clamp

Stafford metric shaft collars are fully metric, down to the clamping screws. Two-piece clamp-type collars are intended to be used over split hubs, thin wall tubes, and standard round shafts, both hard and soft. They are capable of being completely disassembled and installed anywhere on a shaft. Other benefits include:

  • Precision machined
  • Non-marring
  • Strong clamping force
  • Shafts are protected from damage by a smooth bore
  • Superior to set screw collars in terms of holding power

 

Metric two-piece split clamp collars are stocked in:

  • Steel
  • Stainless steel

Set Screw

These two-piece clamp-type shaft collars with set screws are designed to be used on standard round shafts. They can be completely disassembled and installed anywhere on a shaft. Features include:

  • Precision machined
  • Easily adjustable
  • High clamping force
  • Low profile style

 

These metric products are stocked in steel and stainless steel, but other materials are available as custom designs.

Hinge

Our metric hinge shaft collars are fully metric, including the clamping screws. They combine the flexibility of a two-piece collar and the ease of a one-piece, with a triple-link hinge and captive screw in one unit.

Exclusive to Stafford, hinge shaft collars are ideal for situations requiring fast operation, such as hostile environments or situations with limited space and time. Hinge shaft collars are two-piece collars that can be used on standard round shafts, hard or soft, as well as thin wall tubes or over a split hub.

They are simple to put together, adjust, and disassemble, preventing wasted time from fumbling or lost screws. Hinge shaft collars offer the same axial holding power as standard collars. They have a smooth bore that won’t scratch shafts.

Metric hinge shaft collars are stocked in:

  • Steel
  • Stainless steel
Metric Rigid Shaft Couplings

Our metric rigid shaft couplings are available in one-piece, two-piece, three-piece, and customizable clamp options, with or without keyways. Learn more about these products below.

One-Piece Split Clamp

Stafford metric rigid shaft couplings are fully metric, right down to the clamping screws. The one-piece clamp-type coupling is designed to allow two aligned shafts to function as one. Metric clamp-type couplings with straight-through bores are available. 

Other features include:

  • Precision machined
  • Non-marring
  • High clamping power
  • No backlash
  • Shafts are protected from damage by a smooth bore
  • Superior torque capacity compared to set screw couplings

 

These products are stocked in steel and stainless steel.

Two-Piece Split Clamp

Stafford metric rigid shaft couplings are fully metric, right down to the clamping screws. The two-piece clamp-type coupling connects two aligned shafts and allows them to function as one. This coupling detaches completely for the most convenient assembly and adjustment. Metric clamp-type couplings with straight-through bores are available. 

Other features include:

  • Precisely machined
  • Non-marring
  • High clamping power
  • No backlash
  • Shafts are protected from damage by a smooth bore.
  • Superior torque capacity compared to set screw couplings

 

These products are stocked in steel and stainless steel.

Three-Piece Split Clamp

The three-piece clamp-type coupling is designed for two aligned shafts, allowing them to function as one. It can be fixed to one shaft while the other is moved or changed, or it can be completely disassembled for the most convenient assembly and adjustment. Metric three-piece clamp-type couplings with straight-through bores are available.

Other features include:

  • Precision machined
  • Non-marring
  • High clamping power
  • Zero backlash
  • Smooth bore protects shafts from damage

 

These products are stocked in steel and stainless steel.

Metric Mounting Devices and Components

We offer three different metric mounting devices and components. Learn more about each one below.

Metric Accu-Flange™ Shaft Mounting Collars

Browse our Metric Accu-Flange™ Shaft Mounting Collars product page.

Metric One-Piece Split Face Mounting Shaft Collars

Face mounting shaft collars have universal tapped mounting holes that allow for a variety of component mounting possibilities. One-piece clamp-type shaft collars can be used on hard or soft standard round shafts, as well as thin wall tubes or over a split hub. We stock these items in steel materials. Additional features include:

  • Precision machined
  • Non-marring
  • Strong clamping force
  • Smooth bore protects shafts from damage
  • Superior to set screw collars in terms of holding power

Metric Thread Grip & Go™ Quick Release Handle

The Grip & Go™ Metric Thread Quick Release Clamping Handle replaces the clamp screw in any metric clamp-type shaft collar, allowing for quick repositioning without the use of a wrench. The OD is knurled for a secure grip.

It is ideal for situations where clamping collars must be adjusted frequently along a shaft. The handle can make linear modifications to a feed mechanism, alter stroke length or table height, and position a test instrument. This clamping handle is not designed for use in rotary applications.

We stock the Grip & Go™ Metric Thread Quick Release Clamping Handle in:

  • Steel
  • Stainless steel
  • Aluminum

Maintenance, Repair, Retrofit, & Accessories

Our accessories, maintenance, repair, and retrofit services:

  • Solve one-off problems with a standard product
  • Include shaft collars, rigid couplings, and specialty components
  • Save time and cost

See the full catalog of our maintenance, repair, retrofit, and accessories.

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Maintenance, Repair, Retrofit, & Accessories

Mounting Systems

Our mounting systems meet customers’ demands for ergonomic or component attachment solutions. They save time and money and have broad MRO and OEM applications.

Our mounting systems cover:

  • Round Bore Shaft Collars
  • Rigid Shaft Couplings
  • Metric Shaft Collars, Rigid Shaft Couplings, and Components
  • Specialty Components and Accessories
  • Square and Hexagonal Bore Shaft Collars

For more information, contact us today. To start your order, request a quote. Use our rigid shaft coupling configurator tool to create the ideal solution for your application.

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Mounting Systems

View Our Product Catalog

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View Our Product Catalog

For an overview of all our products and capabilities view The Stafford Advantage

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For an overview of all our products and capabilities view The Stafford Advantage